Scrum T. Goedemoed 2012 - FMJDScrum – T. Goedemoed 2012 White plays and wins ! The Monkey shot (drawn by Sylvia Edelenbos) This is the seventh and conclusive part of A Course in

Scrum – T. Goedemoed 2012

White plays and wins !

The Monkey shot (drawn by Sylvia Edelenbos)

This is the seventh and conclusive part of A Course in draughts. It contains a huge amount of exercises to practice the lessons from A Course of draughts part 3. This book contains a lot of extra information, especially about the endgame and strategy. A lot of research has been done before writing these sections. I used computer programs Truus and Kingsrow to analyse positions and Turbo Dambase to find positions from games. . The book is corrected by Martijn van der Klis, who has done a great job again. This book can be used for self-study for advanced players. This book can also be used by draughts teachers, who need exercises for the trainings they give. I hope many draughts players and draughts teachers will find the exercises in this book useful. There are 7 chapters, like in ACID 3. A series of compositions completes the lessons. I selected compositions from (among others) De Problemist, a magazine on draughts compositions. Hermelink is my favourite composer, so most compositions are of this brilliant Dutch composer. You can practise by playing online on playdraughts (see link at the right). Enjoy the game! Tjalling Goedemoed, Leeuwarden, March 2013

S1. Using tactics as a weapon 4 S2. The opening of the game 30 S3. Strategy 46 S4. The thinking process 135 S5. The endgame 164 S6. Finishing of the game 221 S7. Compositions 248

Sources:

Trainingsmateriaal – T. Goedemoed Turbo Dambase – Klaas Bor Truus (anlaysing program) – Stef Keetman Kingsrow (analysing program) – Gérard Taille K&K Klassiek – J. Krajenbrink & L.J. Koops K & K Toppers: Piet Roozenburg Het eindspel – J.F. Moser Blankenaar verzameld werk – K.W. Kruijswijk Materiaal CJT – Nikhila Materiaal CJT – T. Goedemoed DamMentor – T. Goedemoed De Problemist – Kring voor Damproblematiek

Play draughts online! www.playdraughts.com

Youtube channel on draughts: http://www.youtube.com/user/Akashian123

http://www.playdraughts.com/

http://www.youtube.com/user/Akashian123

S1. Using tactics as a weapon

4

Game played in at the Thailand draughts tournament between a Chinese (l) and a

Mongolian player

As mentioned before, tactics play a crucial role in the game of draughts. To be able to perform a strategy successfully one has to judge the tactical features of positions correctly. This chapter gives clues as to when to watch for tactics even more sharply. Making the exercises will help you recognize tactical patterns faster in your own games. Watch the clock for the time you should use for a test!


Attacking pieces Weaknesses The track to king The impossible move Sacrifices Forcings Kings involved Calculation Extra exercises Tactical games


5

Attacking pieces

1

2

3

4 Black

Use 20 minutes

5

6 Black

7 Black

8


6

Weaknesses

1

2 Black

3

4

5

6

7

8 Black


7

The track to king

1

2 Black

3 Black

4 Black

Use 25 minutes

5

6 Black

7 Black

8


8

The impossible move

1

2

3

4 Black

Try to find the right move for white!

5

6

7

8 Black


9

The inmpossible move – calculation

F. Hermelink

This is a brilliant composition of the famous Dutch composer Frans Hermelink. White forces a win playing the impossible move 1.36-31!! Black can answer this move in several ways, but white performs a shot at each reply.

1.36-31!! 1) 1...21-27 2.32x21 16x36 3.29-24 19x30 4.40-34 30x39 5.26-21 17x26 6.28x19 14x23 7.38-32 39x28 8.37-31 36x38 9.42x15 Draw the position in the empty diagram!

2) 1...3-8 2.31-27 22x31 3.44-39 35x44 4.28-23 19x28 5.33x2 44x24 6.26x17 12x21 7.37x17

3) 1...19-24 2.29x20 14x25 3.31-27 22x31 4.28-22 17x39 5.26x19 31-36 6.44x33 35x44 7.50x39

4) The nicest shot is performed after 1...7-11 2.31-27 22x31 3.29-24 19x30 4.40-34 30x39 5.48-43 39x48 6.28-22 17x39 7.26x19 14x23 8.37x26 48x28 9.44x15

Draughts player Karlijn Overes


10

Sacrifices

1

2 32-28?

3

4

5

6

7

8 Forcing


11

Forcings

1

2

3 Black

4

5

6

7 Black

8 30-24?


12

Kings involved

1 Black

2 Black

3

4 Black

Look for a forcing or shot!

5 Black

6 Black

7

8 Black


13

Calculation

1. J. Lemmen

1.37-31 26x48 2.47-41 36x47 3.27-22 18x27 4.32x21 23x43 5.21-16 47x40 6.16x29 43x23 7.45x34 48x30 8.35x2 23-29 9.2-30 29-33 10.30-24 33-39

11.25-20

2. A. Kuyken

1.29-24 20x29 2.27-21 18x49 3.21x1 49x24 4.39-33 23x41 5.34x23 19x39 6.1-6 26x37

7.6x36

3. H. Spanjer

1.35-30 27x40 2.30x19 13x24 3.28-22 17x30 4.45x3 24x33 5.26x17 12x21 6.3x38 21-27

7.38x21 16x27 8.42-37

1

2

3


14

Extra exercises

1

B. Aalberts – K. Machtelink

A) White to move. Why does he have to look for a shot? B) White can take a kingshot in two ways. Which one is the most convincing shot?

2

H. de Witt – K. Toet

White could have taken a shot, but he didn’t perform it. A) How does the shot go? B) Can you imagine why white didn’t spot the shot?

3

M. Borghetti – M. Kroesbergen

A) Describe the weaknesses in black’s position.

B) How did white take advantage from this?

4

Mac. N’Diaye – A. Silva

Black goes to an endgame in which he has tactical means to win the game.

1...18-22! 2.39-34 White should have defended with 2.30-25. The piece on <34> will only help black.

2...24-29! 3.33x13 22x42 4.13-8 42-47


15

Because of white’s piece on <30> white can’t go to king-square 2! A) How is 5.8-3 punished?

5.30-24 47x20! 6.8-2 20-15! White has no good moves left. B) How did black punish the played move 7.2-30?

5

I. Trofimov

In this modern position with mutual outposts black has just played 14-19. A) What clue does white have to look for forcing? B) How did white force a win?

6

T. Goedemoed – B. Eggens White recognized a combinational pattern from a Kolk – Derkx game. How did he introduce the threat of a shot that black can’t parry anymore?

7

White can force a tactical freeze out. The order of moves is important to prevent black from escaping with a sacrifice. Find out how white wins!


16

8

T. Aeikema – G. van Dijk

Black’s position is superior. His own edge piece at <25> is strong, while the edge piece on <26> can be tactically exploited. A) How is 1.40-34 punished? B) How does black meet 1.27-22? C) Why is 1.39-34 not good?

1.36-31 13-18

D) What’s the name of the shot that follows after 2.39-34 ?

2.42-37

E) Which breakthrough shot decided the game?

9

R. Keurentjes – K.H. Leijenaar

White played the sharp Samba-swing: 31.23-19?!

Black can’t play 4-10 now, because of a kingshot. A) How does this shot go?

B) Black has a very surprising defence using a sacrifice. Can you spot it?

10

Black to move A) Describe the position in words. Why should black to move look for tactics? B) Look for a forcing!

11

J. Dekimpe – P. Casaril

How did the young Belgian player force a kingshot?


17

Tactical games

The game R. Heusdens – G. Jansen (from the Dutch championship 2001) was very complicated with many tactical possibilities. We show the game and will analyse the crucial position.

R. Heusdens – G. Jansen Dutch championship 2001

1.32-28 17-22 2.28x17 11x22 3.37-32 6-11 4.41-37 12-17 5.46-41 8-12 6.32-28 16-21

7.31-26 21-27 8.36-31 27x36 9.26-21 17x26 10.28x6 20-24 11.37-32 14-20 12.32-27 10-14 13.34-30 2-8 14.30-25 18-23 15.42-37 24-29

16.33x24 20x29 17.27-22 12-18 18.39-33 18x27 19.33x24 19x30 20.25x34 13-19

21.44-39 8-13 22.50-44 27-31 23.48-42 7-12 24.38-33 15-20 25.43-38 5-10 26.49-43 10-15 27.34-30 12-18 28.30-25 3-8 29.40-34 8-12

30.45-40 12-17 31.34-30 18-22 32.38-32

R. Heusdens – G. Jansen

The position looks exotic with the edge pieces on <6, 26 & 36>. Black was to move and went wrong, playing 32...13-18? A) How could white have punished this move? Black can try to make a shot himself, playing 32...4-10, hoping for 33.32-28? 23x32 34.37x28. B) Show the shot (a Mountain shot) black can take now. 32...4-10 isn’t a strong move, because it spoils black’s position. His left wing is weakened by the dangling piece on <10>. So let’s look at 32...20-24. C) 32...20-24 33.43-38 can be punished by black. How does the shot go?

White should meet 32...20-24 with 33.32-28 23x32 34.37x28. After 13-18 white shouldn’t play 35.40-34? D) Which kingshot does black perform in this case?

J. Ermakow – A. Chizhov Russian championship 1987

1.33-29 17-22 2.39-33 11-17 3.44-39 6-11 4.50-44 1-6 5.31-26 16-21 6.32-28 19-23

7.28x19 14x23 8.35-30 10-14 9.30-24

This is the famous Keller-opening. Black has to make a choice from several good continuations:

- 9...21-27 The orthodox continuation - 9...23-28 The main line - 9...22-28x28x22 Revoenets-variation - 9...5-10 The modern continuation

Black chose 9...23-28 in this game. The main line is 10.40-35 20-25 11.24-20 15x24 12.29x20, but white chooses a different variation.

9...23-28 10.37-31 5-10 11.42-37 20-25 12.24-20 15x24 13.29x20 10-15 14.34-29 15x24 15.29x20 14-19 16.20-15 25-30!

The piece at <35> causes white more trouble to control the right wing. 17.40-34 30-35 18.45-40 18-23 19.38-32 11-16

20.43-38


18

20...12-18?! Allowing his opponent to make a kingshot. The immediate 21.34-29 would be punished though. A) Look for the counter-shot after 21.34-39 23x45 22.32x1 21.15-10 4x15 22.34-29 23x45 23.32x1 19-24

24.48-43 B) Why doesn’t black catch the white king with 24...2-7?

24...45-50 25.1-45

C) Look for the shot that black performed! The white king will disappear and the black king will capture four pieces. Draw the remaining position in the empty diagram!

Black finished off the game using his king in an excellent way: 32.24-20 13-18 33.20-15 9-14 34.43-38 18-23 35.41-37 23-29 36.37-32 6-11 37.36-31 8-13 38.32-27 11-17 39.46-41 2-7 40.41-36 13-8 41.31-26 7-11 42.27-21 8-12 43.21-16 12-7 44.49-43 29-34 White resigned.

J. Wielaard – T. Sijbrands Simultaneous game 2004

1.33-29 19-23 2.35-30 20-25 3.40-35 14-20 4.38-33 16-21 5.42-38 21-26 6.47-42 10-14

7.32-28 23x32 8.37x28 26x37 9.41x32 14-19 10.30-24 19x30 11.35x24 17-21 12.46-41 11-16 13.41-37 6-11 14.45-40 11-17 15.37-31 21-26 16.50-45 26x37 17.32x41 16-21 18.41-37 7-11 19.37-32 11-16 20.42-37 18-22 21.28-23 13-18 22.32-28 21-26 23.38-32 16-21 24.43-38

1-6 25.48-43 6-11 26.40-35 11-16

A sharp attacking position has emerged on the board. White has to develop his attack, so next move is logical.

27.34-30 25x34 28.39x30 Black could play 28...21-27 29.32x21 16x27 after which white has to pull back his attack with 38-32x42x38 (or 37-31 first and then 38-32x31), with an advantage, but black wants more and uses the tactical possibilities this position gives.


19

28...4-10?! White has to look at 3 moves: 30-25, 44-39 and 37-31. We look at all three candidate moves. 29.37-31 26x37 30.32x41 21-26 31.44-39 22-27 A) How does black force gaining a piece after 32.45-40? 32.38-32 27x38 33.43x32 20-25 34.49-43? 25x34 35.39x30 Draw the position in the empty diagram.

B) Which strong move forces a win now? In the game white played 29.30-25? C) Why is this a dangerous move? Use only words to explain why. Black performed a nice forcing:

29...21-27 30.25x14 10x30 31.35x24 9-14 32.32x21 16x27

D) How is 33.33.37-31 26x37 34.38-32 27x38 35.43x41 punished?

33.38-32.27x38 34.43x32 E) Which kingshot did black perform now? F) After this shot white resigned. Would you do that too?

It turns out that 29.30-25 isn’t good. The most logical move seems 29.44-39, closing the gap at <39>. We show only one line: 29.44-39 9-13 30.30-25 21-27 31.25x14 10x30 32.35x24 5-10 33.32x21 16x27 34.38-32 27x38 35.43x32 10-14 36.45-40 G) Can you predict black’s next move?

T. Sijbrands – G. Beerepoot 1980

1.33-29 17-22 2.39-33 11-17 3.44-39 6-11 4.50-44 1-6 5.32-28 16-21 6.31-26 19-23

7.28x19 14x23 8.35-30 10-14 9.30-24 23-28 Black chooses the main line in the Keller-opening. 10.40-35 20-25 11.24-20 15x24 12.29x20 14-19 13.20-15 5-10 14.37-31 10-14 15.34-29 19-

23 16.44-40 23x34 17.40x29

This is the so-called Boom-opening, named after Gerrit Boom from the Netherlands, who won a nice game against a young Alexander Baliakin with it. Boom is Dutch for tree. There also is a so-called neo-Boom-variation. We could call these variations the old and the new Tree in English... The New Tree is shown in the next game. Boom – Baliakin (1980) was: 15...21-27 16.42-37 19-23 17.44-40 23x34 18.40x29 11-16 19.45-40 13-19 20.40-34 9-13 21.37-32 28x37 22.41x21 16x27 23.38-32


20

27x38 24.43x32 3-9 25.35-30 19-23 26.31-27 22x31 27.36x27 14-19 28.46-41 7-11 29.48-42 17-22 30.41-36 22x31 31.36x27 12-17 32.47-41 2-7 33.41-36 8-12 34.49-44 17-22 35.30-24 22x31 36.36x27 19x30 37.32-28 23x21 38.26x19 18-22 39.19-14 9x20 40.15x35 7-12 41.29-23 22-27 42.42-37 11-17 43.34-29 17-22 44.37-32 27x38 45.33x42 6-11 46.39-33 11-16 47.42-37 16-21 48.44-39 21-26 49.39-34 12-17 50.23-19 22-27 51.37-32 27x38 52.33x42 4-9 53.42-37 17-21 54.29-23 21-27 55.23-18 27-31 56.19-13 31x42 57.13x4 42-47 58.18-12 2-0 Let’s continue Sijbrands – Beerepoot:

17...14-19 18.45-40 19-23 19.40-34 9-14 20.41-37 11-16 21.46-41 7-11

We will have a look at an explosive line: 21...21-27 22.38-32 27x38 23.43x32 17-21 24.26x17 12x21 25.34-30 25x43 26.48x39 23x43 27.32x1 43-48 Now white’s best move is 28.31-26 with an advantage after 22-27 29.26x17 16-21 30.17x26 27-32 31.37x28 48x19 32.47-42 19x46 33.1-45 +/-. A) Why shouldn’t white play 28.42-38? 22.31-27 21x32 23.38x27 22x31 24.36x27 3-9 25.33x22 17x28 26.41-36 12-17 27.37-31 17-

22 28.42-38 11-17 29.29-24!

White finished the game with a great shot. Black has already a lost position.

29...14-19 30.34-29! B) How does white continue after 30...23x34?

30...19x30 31.35x24 23x34 32.39x30 25x34 33.26-21 17x37 34.38-32 22x31 35.32x14 37-

41 36.36x27 41-46 C) How did the shot continue?

H. Meijer – P. Oudshoorn Bijlmer 2001

1.33-29 17-22 2.39-33 11-17 3.44-39 6-11 4.50-44 1-6 5.31-26 16-21 6.32-28 19-23

7.28x19 14x23 8.35-30 10-14 9.30-24 23-28 10.40-35 20-25 11.24-20 15x24 12.29x20

14-19 13.20-15 11-16

Before it is made impossible by the 37-31 move, white plays 11-16 & 7-11. His intention is not to play 21-27 but go to <32> later! This line is the beginning of the New Tree.

14.37-31 7-11 15.44-40 5-10 16.34-30 25x34 17.40x29 19-23 18.29-24 9-14 19.35-30 23-29

20.30-25 29x20 21.15x24 10-15 22.45-40

A) Why can’t black play 22...4-9? Black takes an outpost at <32> with a fascinating fight. This is the point of the New Tree.

22...28-32 23.38x27 21x32 24.33-29 4-9 25.39-34 22-27 26.31x22 17x28 27.34-30 11-17 28.40-35 2-7 29.36-31 7-11 30.42-37 18-22 31.49-44 13-18 32.44-39 8-13 33.39-34 14-20

34.25x14 9x20 35.43-39


21

B) With which kind of shot is 35...20-25? punished?

35...3-8

White could have forced a win now.

C) Does he have to play 47-42 or 48-42? Explain why.

L. Tsipes – E. Tachma 1979

1.33-29 17-22 2.39-33 11-17 3.44-39 6-11 4.50-44 1-6 5.31-26 16-21 6.32-28 19-23

7.28x19 14x23 8.35-30 10-14 9.30-24 5-10 The modern line in the Keller opening.

10.37-31 20-25 11.24-20 15x24 12.29x20 The sharpest line from here is 12...11-16 13.20-15 7-11 14.41-37 14-19 15.40-35 10-14 16.44-40 2-7 17.33-29 19-24 18.29x20 14-19 19.35-30 25x14 20.40-35 22-27 21.31x22 17x28 22.26x17 12x21. The game continued:

12...14-19 13.20-15

Usually 13...10-14 is played here followed by 22-27 like in the game. 13...10-14 can’t be met by 14.33-28 because <39> is vulnerable with an edge piece at <15>:

14.33-28? 22x33 15.39x28 23x32 16.38x16 14-20! 17.15x24 19x50 B+. White shouldn’t play 14.33-29? either.

A) How does black force a win now?

13…22-27 14.31x22 17x28 15.33x22 18x27 16.26x17 12x21 17.41-37 8-12 18.34-30!

25x34 19.40x18 13x22 20.37-31 The point of this play is that black can’t attack 21-26 which was played in the game. B) Which kingshot did white perform after 20...21-26? The point of white’s play is even deeper. After 20...2-8 21.31-26 22-28 22.26x17 11x22, white also has a kingshot. C) How does this kingshot go?

A. Baljakin – A. Rats Salou 2010

1.33-29 17-22 2.39-33 11-17 3.44-39 6-11 4.50-44 1-6 5.31-26 16-21 6.32-28 19-23

7.28x19 14x23 8.35-30 10-14 9.30-24 5-10 10.37-31 20-25 11.24-20 15x24 12.29x20 22-27 13.31x22 17x28 14.26x17 12x21 15.33x22 18x27 16.20-15 8-12 17.40-35

White could have played 17.41-37 hoping for 14-19 18.34-30 etc. as in the previous game.

17...14-19 18.34-30 25x34 19.39x30 10-14 20.44-39 12-18 21.45-40 7-12 22.40-34 11-17

23.41-37 6-11 24.38-33 21-26 25.33-29 2-7 26.39-33 17-21 27.43-39 11-16 28.47-41


22

This is a key position in this opening that has emerged on the board many times. The main line is 28...18-22 29.29x18 12x23 30.33-29 13-18 31.37-31 26x37 32.42x31. The best move for black is 32...23-28! Like in Wiersma – Chizhov (Wch match 1994). Wiersma – C. van der Schaaf was: 32...9-13 33.39-33 A) Why shouldn’t black play 33...21-26 now?

28...3-8 29.30-25 18-22 30.29x18 12x23 31.33-29 8-12

The continuation 31...13-18 32.37-31 26x37 33.42x31 21-26? allows white to make a shot. B) How does this shot go?

32.29x18 12x23 33.34-30 7-12? Black should have played 13-18.

34.39-33 12-18 C) Black can’t play 34...13-18 anymore. Why not?

35.49-43 Black hasn’t got a good move left. D) How does white meet 35...27-31 36.36x27 22x31 winning in a positional way? E) Black played 23-28. How did white finish off the game?

A. Scholma – P. Hoopman 1999

1.32-28 20-25 2.37-32 15-20 3.41-37 10-15 4.34-30 25x34 5.39x30 17-21 6.44-39 21-26 7.40-34 20-25 8.45-40 11-17 9.50-45 17-21

10.30-24 19x30 11.35x24 7-11 12.31-27 14-20 13.49-44 20x29 14.33x24 12-17 15.38-33 8-12

16.34-29 3-8 17.28-23 9-14 18.42-38 14-20 19.47-42 17-22 20.46-41 22x31 21.36x27 1-7 22.41-36 4-10 23.40-35 11-17 24.33-28 7-11

25.38-33

Black should have played 25...10-14! creating the 25-30 threat, while taking advantage of white’s weaknesses, especially the gap on <38>. A) Which great shot follows after 26.35-30 25x34 27.39x30 ? B) How is 26.39-34? punished? White’s best defence is sacrificing a piece, with positional compensation: 26.37-31 26x37 27.42x31 25-30 28.24-19 13x24 29.31-26 8-13?! C) Why is 30.28-22? a mistake now? In the game black made a huge mistake playing 25... 2-7?? D) How did white win?


23

Solutions

Attacking pieces

1) 1.27-22! 25x34 2.44-40 18x27 3.40x18 13x22 4.28x26 W+ 2) A. Boxum – R. van Marle White could have won making a shot: 1.40-35! 22x44 2.23-19 14x23 3.29x9 3x14 4.24-20 15x24 5.43-39 44x33 6.38x9 W+ 3) 1.28-22 25x34 2.40x20 14x25 3.27-21 26x39 4.38-33 39x28 5.32x5 W+

4) G. Kolk – W. Sipma 1...13-18! 2.22x15 17-22 3.28x8 2x13 4.35x24 13-19 5.24x13 9x49 B+ 5) A. de Hoon – P. Kort White could have won playing 1.49-43! 18x27 3.36-31 27x47 4.38-33 47x35 5.33x24 35x19 6.28-22 17x28 7.32x1 6) N. Hoekman – T. Kooistra 1.37-32? 10-14! 2.32x12 7x18 3.28x17 24-29 4.34x12 25x34 5.39x30 13-18 6.12x23 19x46 B+ 7) J. Hooijberg – B. Provoost 1.37-31? 14-20! 2.31x22 17x39 3.34x43 23x34 4.25x23 34x25 8) G. Mantel 1.35-30!? 20-24? 2.33-28! 24x35 3.37-31 26x46 4.39-34 22x33 5.38x29 46x28 6.29-24 19x39 7.44x2

Weaknesses 1) O. Sadovskaja – D. Fedorovich White could have taken advantage from the gap at <14> making a nice kingshot: 1.28-23! 18x38 2.32x43 21x41 3.36x47 26x37 4.47-41 17x28 5.41x3 W+ 2) R. Koopmanschap – E. van Muijen Many gaps in white’s position give white the opportunity to make a shot: 1...24-29! 2.34x23 13-18 3.23x12 22-27 4.31x22 14-20 5.25x23 11-16 6.22x11 16x36 piece <36> breaking through later. 3) Black has several gaps in his position. 1.28-23! 19x28 (1...18x29 2.35-30 24x44 3.33x24 44x42 4.24-20 15x24 5.31-26 42x31 6.36x29 W+) 2.32x23 18x29 3.35-30 24x44

4.33x24 44x42 5.24-20 15x24 6.31-26 42x31 7.36x29 W+ 4) The opened square <14> should alarm white to look for a shot. 1.27-22! 18x27 2.33-29 24x33 3.38x18 27x49 4.34-30 13x22 5.30-24 20x29 6.40-35 49x40 7.45x3 W+ 5) R. Koopmanschap – R. Heusdens White could have used the gaps in black’s position by making a shot: 1.39-34! 30x50 2.31-26 50x17 3.27-22 17x31 4.26x17 11x22 5.36x18 W+ 6) W. Leijenaar – E. Vatoetin Piece <11> is dangling, giving white the opportunity to make a breakthrough shot to <6>. 1.28-23! 19x28 2.33x22 24x42 3.22-18 12x23 4.34-30 25x34 5.40x18 13x22 6.43-38 42x33 7.39x6 W+ 7) Square <3> isn’t covered. White makes a king on that square. 1.28-22 17x28 2.25-20 14x34 3.38-33 29x49 4.40x29 23x34 5.32x3 49x21 6.26x17 12x21 7.3x40 W+ 8) M. van IJzendoorn – K. van Amerongen Black could have won making a shot, using white’s weak construction with gaps at <40 & 49>. 1...23-28! 2.33x2 18-23 3.29x7 8-12 4.7x18 13x31 5.26x37 14-20 6.2x24 20x49 B+

The track to king 1) 1.26-21! 17x26 2.37-31 26x28 3.34-29 24x33 4.39-34 30x39 5.27-21 (the immediate 42-38 will also win) 16x27 6.42-38 33x42 7.44x2 35x44 8.2x7 2) C. Pippel – S. Rijgersberg 1...4-10! 2.32x21 12-18 3.21x1 (3.21x23 25-30 4.28x6 30x46 B+) 3...11-16 4.1x23 25-30 5.24x35 13-19 6.28x17 19x46 B+

3) 1…21-27! 2.32x12 13-18 3.12x23 19x28 4.33x22 24-30 5.35x24 14-19 6.24x13 9x47 B+ 4) 1...13-19! 2.24x2 23-29 3.33x24 14-19 4.24x22 1-7 5.2x11 6x50 B+ 5) H. Jansen 1.33-29! 24x33 2.30-24 19x39 3.27-22 18x38 4.35-30 25x34 5.40x7 2x11 6.37-32 38x27 7.48-43 39x37 8.41x5 W+ 6) K. van Amerongen – S. den Hollander


24

Black could have performed a kingshot. 1...26-31! 2.37x26 20-24 3.30x19 8-13 4.19x17 11x31 5.23x12 6-11 6.26x37 11-17 7.12x21 16x47=

7) 1...13-18 2.22x24 20x29 3.34x23 26-31 4.37x17 11x33 5.38x29 25-30 6.35x24 15-20 7.24x15 4-10 8.15x13 8x50 B+ 8) 1.36-31 27x36 2.25-20 14x25 3.34-30 25x34 4.39x19 28x50 5.26-21 13x24 6.21-17 12x21 7.38-33 50x28 8.47-42 36x38 9.43x5 W+

The impossible move

1) W. Okrogelnik – C. Martens White could have won by playing 1.30-25! 18-22 2.25x14 22x44 3.48-43 19x10 4.43-39 44x33 5.38x7 W+

2) P. Bouma - Tj. v.d. Bosch 1.39-34!! 24-29 1...9-14 2.34-29 23x34 3.40x29 W+ 2.33x24 19x48 3.28x19 13x24 4.27-21 16x27 5.31x4 48x31 6.26x37 W+

3) W. Sipma 1.30-24! 20x29 2.31-26!! 11-17 [ 2...1-6 3.26x17 11x31 4.37x26 28x39 5.44x2 W+ ] 3.27-22 [ Or 3.38-33 28x48 4.27-22 18x38 5.42x2 48x31 6.26x37 ] 3...18x27 4.38-33 28x48 5.44-40 27x38 6.42x2 48x31 7.26x37 4) B. Provoost – R. Boomstra 1...23-28!! 2.42-37 (2.31-26 22x31 3.33x2 31-36 4.2x30 25x32 B+) 2...18-23 3.27x18 23x12 4.33x22 12-18 5.22x2 16-21 6.2x30 25x41 B+ 5) W. Sipma – T. v.d. Broek 1.29-24! 23-29 (1...14-19 2.38-32 19x30 3.32-28 23x32 4.31-27 22x31 5.36x7 W+, 1...23-28 2.25-20 14x25 3.24-19 13x24 4.31-27 W+) 2.34x23 18x20 3.31-27 22x31 4.36x18 13x22 W+1 6) 1.32-28! 2-8 (1...18-23 2.27x20 23x34 3.42-38 24x15 4.33x13 W+, 1...12-17 2.28-23 19x28 3.39-34 28x30 4.25x21 W+1) 2.28x17 12x34 3.42-37 29x38 4.40x9 13x4 5.37-32 38x27 6.31x2 W+ 7) T. Sijbrands – F. Zahnd 1.33-29!! 12-18 (1...12-17 2.29x18 13x35 3.27-22 17x28 4.32x5 W+, 1...11-17 2.29x7 8-12 3.7x18 13x35 4.27-22 17x28 5.32x5 W+) 2.29-24 20x29 3.27-22 18x27 4.32x21 23x43 5.34x5 W+

8) 1...17-22!! 2.47-42 (2.48-42 gives the same shot) 22x31 3.37x17 23-29 4.34x12 13-18 5.12x23 14-20 6.25x14 10x46 B+

Calculation

1

2

3

4


25

Sacrifices 1) W. de Jong – W. v.d. Sluis 1.25-20 14x25 2.32-28 11-17 3.27-21 16x27 4.37-32 26x37 5.32x23 22-27 (5...13-18! 6.28x17 18x29 7.33x24 8-12 8.17x8 3x12=) 6.23-19 13x24 7.28-22 27x18 8.38-32 37x28 9.33x2 W+ 2) C. v.d. Hurk 1.32-28? 22-27!! 2.31x22 9-14 3.30-25 (3.22-17 19-24 4.30x19 14x41 5.36x47 21-27 B+) 3...19-23 4.28x19 14x23 5.25x5 21-27 6.5x21 26x48 B+ 3) T. Goedemoed 1.24-20 15x24 2.38-32 8-12 (2...28-33 3.39x28 22x33 4.27-21 16x38 5.37-32 38x27 6.31x2 W+) 3.32x23 18x29 4.27x9 4x13 5.39-33 29x38 6.37-32 38x27 7.31x2 W+ 4) V. Bulat 1.24-19 13x24 2.29x9 4x13 3.23-18 13x22 4.37-32 27-31 5.33-28 22x42 6.48x26 W+ 5) A. Scholma 1.28-22! 18x36 2.39-34 8-13 3.34-29 12-18 4.29x9 13x4 5.47-42 36x29 6.30-24 19x30 7.25x1 W+ 6) 1.24-19! 13x24 2.29x20 15x24 3.33-28 14-19 4.26-21 16x38 5.39-33 38x29 6.49-43 23x32 7.34x21 W+ 7) Triple gambit: 1.29-23 18x29 2.27-21 16x27 3.28-22 27x18 4.39-34 19-23 5.33-28 23x32 6.34x25 W+ 8) M. Bonnard 1.34-29 30-35 2.32-28 17-21 3.31-26 18-22 4.26x17 22x11 5.25-20! 14x25 6.29-23 W+

Forcings 1) M. Kroesbergen – T. Dijkstra 1.33-28! 10-14* 2.27-21 16x38 3.36-31 23x32 4.31-27 32x21 5.26x8 13x2 6.39-33 38x29 7.34x1 W+

2) J.T. Dekker – C. van der Tak 1.39-34! 24-29 (1...4-10 2.34-29 23x34 3.40x20 10-15 4.42-38 15x24 5.28-23 19x39 6.38-33 39x28 7.32x1 21x32 8.37x28 W+, 1...24-30 2.33-29 30x39 3.29-24 19x30 4.28x10 4x15 5.25x43 W+) 2.33x24 19x39 3.28x8 2x13 4.37-31 26x28 5.48-43 39x37 6.41x1 21x32 W+

3) Y. Bobkov – E. Heslinga 1...23-29! 2.33-28 30-34 3.39x19 29-34 4.40x29 7-12 5.17x8 2x42 B+ 4) A. Verchovich – M. van Gortel 1.33-29! 18-22 (1...15-20 2.28-22 17x37 3.47-42 37x48 4.40-35 48x30 5.35x2 23x34 6.2x16 W+, 1...8-12 2.38-33! (2.27-22 18x27 3.29x16 19-23 4.32x12 23x43 is not clear) 2...15-20 3.27-21 17x26 4.28-22 18x38 5.29x16 38x29 6.34x14 20x9 7.16-11 W+, 1...25-30 2.34x25 23x34 3.40x29 19-23 4.28x19 18-22 5.27x18 8-13 6.19x8 3x34 7.32-27 W+) 2.27x18 23x12 3.28-22 17x37 4.47-42 37x48 5.40-35 48x30 6.35x2 W+ 5) O. Dijkstra – M. Janssen 1.22-18! 13x22 2.28x17 21-27 (2...8-13 3.17x8 3x12 (3...13x2 4.39-34) 4.32-27 21x34 5.40x9 W+, 2...12-18 3.37-31 26x28 4.33x2 21x12 5.35-30 24x33 6.38x7 W+) 3.32x21 16x27 4.17-11 6x17 5.37-31 26x37 6.42x11 W+ 6) F. Raman 1.30-24! 19x30 2.35x24 23-29 3.27-22 18x49 4.40-34 49x19 5.34x12 13-19 6.33-29 6-11 7.12-7 11-17 8.7-1 19-23 9.29x18 2-7 10.1x21 16x27 11.26-21 27x16 12.18-13 W+

7) A. Martere – N. Hoekman 1...8-13! Threatening to make an arch shot! 2.32-27 (2.42-37 24-29! 3.33x24 13-18 4.24x22 26-31! 5.28x10 31x44 6.40x49 17x46 7.10-5 9-14 B+) 2...23x32 3.42-37 2-8! 4.37x28 17-22 5.28x17 11x31 6.36x27 26x17 B+ 8) F. Luteyn - J.M. Ndjofang 1.30-24? 11-16! 2.24x15 22-27 3.32x21 16x27 4.37-32 27x38 5.33x42* 18-22! 6.39-33 17-21 7.28x17 4-9 8.15x13 8x50 9.17x8 2x13 B+

Kings involved 1) K. ter Braake – A. Georgiev 1...26-31! 2.37x26 16-21 3.26x17 18-23 4.28x8 4-10 5.15x4 45-50 6.4x31 50x3 B+

2) Th. v.d. Hoek – T. v.d. Broek 1...16-21! 2.26x17 (2.27x16 23-28 3.32x23 13-19 4.23x14 3x13) 2...23-28 3.32x23 24-30 4.35x24 13-18 5.22x11 3x19 (Black can also capture 5...3x1) B+ 3) A, Georgiev – R. Misans 1.10-5 28-33 2.42-38 33x42 3.36-31 26x46 4.24-19 46x14 5.5x48 W+ 4) A. Georgiev – R. Boomstra


26

Black could have won by playing 1...17-22!! 2.26x28 13-18 3.23x12 49-35 4.24-20 35-19 5.20x9 19x14 6.36-31 14-9 7.31-26 9-3 B+ 5) A. Plantinga – E. Heslinga 1...24-30! 2.35x13 14-19 3.13x24 12-18 4.22x13 7-11 5.16x7 23-28 6.32x23 46x19 B+ 6) C. van Dusseldorp – M. Deurloo Black could have won by the shot 1...36-41! 2.47x27 19-23 3.28x19 18-22 4.27x18 45x13 B+ 7) E. Prosman – J. v.d. Plas White missed 1.26-21! 17x26 2.27-22 18x27 3.10-5 49x35 4.29-24 35x19 5.5x16 W+

8) A. Chizhov – D. Rusaev Black could have won making a shot in which both players go to king: 1…14-19 2.24x4 16-21! The game was: 2...25-30 3.34x25 23x43 4.32x23 18x38 5.27x18 12x23 6.31-27 43-49 7.26-21 17x26 8.37-31 26x37 9.27-21 16x27 10.4x1 W+ 3.27x16 25-30 4.34x25 23x43 5.32x23 18x38 6.4x27 43-49 7.27x43 49x46 B+

Calculation

1

2

3

Extra exercises 1A) Black has a gap at <13>, which often gives the opponent the opportunity to make a shot. White has several tracks to king, like 35 x 2 / 4 and 43 x 2 / 4. B) 1.37-31! 26x28 2.48-43! The game was 2.44-40 21x32 3.29-24 20x29 4.30-24 19x39 5.40-34 29x40 6.35x4 which looks good too, but black escaped with a draw later. 2...21x32 3.29-24 20x38 4.42x2 25x34 5.2x29 2A) 1.34-30 25x32 2.44-39 35x33 3.42-38 33x42 4.48x6 W+ B) Superficially it looks like a position without tactical possibilities. There isn’t much contact between both players. Therefore white didn’t even look for a shot. Still white can use the edge pieces <35 & 45> for a breakthrough shot. The only clue for this shot is spotting the 48 x 6 track.

3A) Black has a dangling piece on <9> which makes his position vulnerable, not only positional but also tactical. White, having strong outposts and a piece on <25> controlling the right wing, can use the edge piece on <36> to force a shot, using the 25x3 track to king. B) 39-34! introduces the strong threat 23-19 47-41 34-30x39 25x3. Black can’t parry this threat and loses. 4A) 5...23-29! 6.3x33 (or another square) 47x45 B+ B) 7....14-19! 8.30x21 7-12 9.16x29 15x16 B+ 5A) Black has no base pieces on <2 & 4>, so white should look for kingshots removing pieces at <13 & 22>.


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B) 1.47-42! 19x30 2.35x24 is threatening 34-30! and pieces <13 & 22> are removed: Either 34-30 25x34 39x30 24-19 13x24 33-28 etc. or 34-30 23x34 24-19 |& 33-28 W+ follows. 2...23-28 is met by the kingshot 3.24-19 13x24 4.29x20 25x14 5.37-32 28x37 6.33-28 22x33 7.31x4 W+. 6) 1.34-29! 2-8 1...2-7 gives the same shot. 1...19-23 is met by 2.24-19 W+. 2.38-32! 27x38 3.24-20 15x24 4.29x20 38x29 5.30-24 19x30 6.25x3 14x25 7.3x14 W+ 7) T. Goedemoed – D. Staal (analysis rapid game) 1.48-42 1.27-21? 7-12 2.48-42 (2.21-16 4-10) 2...29-34! 3.30x39 18-22 is only a draw. 1.43-38! Is good too: 7-12 (1...17-22 2.28x17 29-33 3.38x29 23x25 4.26-21 7-12 5.17x8 13x2 6.21-17 with a breakthrough for white.) 2.45-40 4-10 3.48-42 10-15 4.27-21 1...4-9 1...4-10 2.27-21 7-12 3.43-38 10-15 4.21-16 2.27-21 7-12 3.43-38 Black can’t play 18-22 (21-16 & 30-24 W+) and he doesn’t have a good sacrifice either. 8A) 1.40-34 24-30 2.35x24 20x40 3.45x34 25-30 4.34x25 23-29 5.33x24 19x30 6.25x34 17-21 7.26x17 11x44 B+ B) 1.27-22 24-29 2.33x24 19x30 3.28x8 17x48 4.35x24 48x2 B+ C) 1.39-34 24-30 2.35x24 19x39 3.28x8 39x48 4.8-2 17-21 5.26x17 11x31 6.36x27 48-37 results in an endgame with two pieces less for white. D) 41.39-34? is met by the arch shot 41…24-29! 42.33x22 20-24 43.28x30 17x48 B+ E) 2 ...24-29! 3.33x22 3-8 4.28x19 17x28 5.32x23 20-24 6.19x30 25x41 B+ 9A) 1.29-23 20x18 2.40-35 13x24 3.36-31 26x37 4.38-32 37x28 5.33x4 W+ B) 1...11-16! 2.19-14 17-22!! 3.14x3 12-17! 4.3x21 16x27 and in spite of having two pieces lees, black has the better position! Investigate this position yourself!

10A) Black has an attacking position with outposts on <23 & 24>. White’s position contains some weaknesses however: Gaps at <38> and <40> and his left wing isn’t developed. Black has many formations to play

against the attack. Hitting on <39> will create another gap, after which the track to king 8 x 50 becomes visible. The logical forcing move is 18-22 therefore. B) 1... 18-22! If white plays 45-40 or 43-38 black takes a kingshot after the exchange playing 12-18 16x27 13-18 and 8x50 +. 2.31-27 is met by 22x33 3.39x28 26-31! 4.37x26 17-22 5.27x9 8-13 6.9x18 16-21 7.26x8 2x33 8.29x38 20x49 B+

11) White played ‘the impossible move’ 1.33-28!! 14-19 1...5-10 2.28x19 13x35 3.37-31 26x28 4.38-32 27x38 5.42x4 W+ 2.25x14 19x10 2...9x20 3.37-31 26x37 4.42x11 16x7 5.29-24 20x29 6.32-27 21x32 7.38x27 23x21 8.34x1 W+ 3.28x19 13x35 4.37-31 26x28 5.38-32 27x38 6.42x4 W+

Tactical games

R. Heusdens – G. Jansen A) 33.42-38! 31x42 34.30-24 19x30 35.35x24 20x29 36.33x24 42x33 37.39x10 W+ B) 32...4-10?! 33.32-28? 23x32 34.37x28 19-24! 35.30x8 9-13 36.8x19 14x32 37.25x5 31-37 38.42x31 26x46 39.5x37 46x45 B+ C) 33...24-29 34.33x24 14-20 35.25x3 22-28 36.3x21 26x17 37.37x26 28x48 B+

D) 35...31-37! 36.41x32 22-27 37.32x23 36-41 38.47x36 24-29 39.33x13 9x47 B+

J. Ermakov – A, Chizhov

A) 21.34-29 23x45 22.32x1 4-10! 23.15x4 9-14 24.4x27 21x34 25.1x40 45x34 and after 26.33-29 34x23 white’s position is terrible. His division of pieces is out of balance. B) 24...2-7? 25.1x20 15x24 26.44-40 35x44 27.49x40 45x34 28.39x19 13x24 W+1 C) 45...8-12 26.45x1 22-27 27.31x11 16x7 28.1x20 15x24 29.26x17 35-40 30.44x35 24-29 31.33x24 50x8


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J. Wielaard – T. Sijbrands A) 32...17-21 33.40-34 12-17 34.23x12 27-31 35.36x27 21x23 36.12x21 26x17 37.29x18 20x40 38.35x44 8-13 B+1

B)

White has many gaps: <37, 38, 39> are all opened. 35...18-22! is threatening with the kingshot 17-21 15-20, while 36.32-27 22x31 37.36x27 is punished by 37…16-21! 38.27x16 17-22 39.28x17 12x21 40.16x27 15-20 41.24x13 8x48 B+. Black is also threatening to play 12-18. 36.23-19 is met by 9-14! 37.19-13 (no other move) 8x19 38.24x13 3-9! 39.13x4 22-27 etc. with a king at <46>. C) White gives his opponent a free move, while having a weakness at <39>. D) 33.37-31 26x37 34.38-32 27x38 35.43x41 17-21 36.28x26 14-19 37.24x22 12-18 38.23x12 8x50 B+ E) 34…22-27 35.32x21 17-22 36.28x17 14-19 37.24x22 8-13 38.17x19 26x50 F) The remaining position may be lost for white, but it is interesting enough to play on. Black’s king cost two pieces, so it is still not trivial to win. Resigning now already is much too early.

G) Black takes a chain-lock playing 36...13-19 37.24x13 8x19 (preventing 39-34 because of 17-21 B+) with attractive play for black.

T. Sijbrands – G. Beerepoot A) 28.42-38? 22-28! 29.33x22 4-10 30.15x4 21-27 31.4x18 2-7 32.1x12 8x28 33.31x33 48x4 B+

B) 30...23x34 31.39x30 25x34 32.26-21 17x37 33.38-32 19x30 34.32x14 22x31 35.36x27 2-7 36.35x24 34-40 37.14-10 40-45 38.10-5 45-50 39.5x46 W+2

C) 37.24-19! 13x24 38.14-9 4x13 39.47-41 46x21 40.43-38 21x43 41.48x8 2x13 42.15-10 W+

H. Meijer – P. Oudshoorn A) 23.25-20 14x25 24.24-19 13x24 25.31-27 with king at <4>. B) A pingpong shot with 36.39-33! 28x39 37.34x43 25x23 38.37x8 W+ C) 36.47-42! (The game was 48-42?) 20-25

36...17-21 26x17 12x21 is met by 31-27 22x31 37x17 11x22 30-25 W+ 36...16-21 loses due to 37.31-27 22x31 38.41-36 32x41 39.36x7 12x1 40.46x37 W+1) 37.48-43 17-21 38.26x17 12x21 39.39-33! 28x48 40.37x26 48x37 41.41x32 W+

L. Tsipes – E. Tachman

A) 14...22-28! Threatening 28-33, while 15.38-32 28x37 16.41x32 is met by 17-22 17.26x28 14-20 18.15x24 19x30 19.28x19 13x33 20.39x28 30x50 B+ 15.38-33 14-20 16.15x24 19x30 17.33x22 17x28 18.26x17 11x22 with the lethal threat of 28-33 B+. B) 20...21-26 21.38-32 26x28 22.36-31 27x36 23.47-41 36x38 24.43x5 W+ C) 23.39-33 28x50 24.38-33 50x28 25.36-31 27x36 26.47-41 36x38 27.43x5 W+

A. Baliakin – A. Rats

A) 33...21-26? 34.30-24! 19x28 35.35-30 23x25 36.48-43 26x37 37.41x1 ++/- B) 34.35-30 26x37 35.41x21 16x27 36.36-31 27x36 37.46-41 36x47 38.29-24 47x20 39.15x11 W+


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C) 35.33-28! W+ D) After 35...27-31 36.36x27 22x31 37.41-36! black hasn’t got a good temp let to make an exchange. He must play 37...23-28 38.33x22 18x27 and white can profit from the lock. E) 36.25-20 14x34 37.43-38 28x39 38.38-33 39x28 39.37-31 26x37 40.41x3 W+

P. Hoopman – A. Scholma

A) 26.35-30? 25x34 27.39x30 13-19! 28.24x22 12-18 29.23x3 26-31 30.37x26 20-25 31.3x20 25x23 32.28x19 17x50 33.26x17 11x31 34.36x27 15x13 B+ B) 26.39-34? 17-22! 27.28x17 11x31 28.36x27 26-31 29.37x17 12x21 30.23x3 5-10 31.3x26 16-21 32.26x19 14x23 33.29x18 20x47 B+ C) 30.28-22? 17x37 31.26x10 15x4! 32.23x12 2-8! 33.12x3 37-41 34.3x34 41-47 35.29x20 47x21 B+ D) 26.24-19 13x24 27.28-22 17x19 28.37-31 26x28 29.33x2 W+

S2. The opening of the game

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We will elaborate on openings discussed in ACID part 3 in this section. The amount of opening theory is so huge that we can only offer a selection of openings. If you want to know more, you can study games in Tournament Base or in Turbo Dambase. Turbo Dambase has an online version, you can check on the Internet. The website of Frits Luteijn can also be useful to study certain sharp openings. Having knowledge about openings can save you a lot of time during games you play. We also hope you’ll be inspired to play interesting openings in order to create nice games. If you want to know more about exciting openings like the Fox, Korchov or Keller study of other sources is needed. You can use the Luteyn website, Turbo Dambase http://www.turbodambase.nl/tdamhome.php or the online Tournament Base http://toernooibase.kndb.nl/

S2. The opening of the game Choose your strategy!

1. The eagle

2. The wild horse

Guessing the opening

The cheetah reviewed

The Springer Contra Attaque

The black panther – Roozenburg attack A sharp position in the Chizhov-exchange variation of 1.32-28 19-23 Opening traps Solutions

http://www.turbodambase.nl/tdamhome.php

http://toernooibase.kndb.nl/


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Choose your strategy! 1) The eagle 1.32-28 18-22

A) Why would someone choose this openings-move (18-22)? We follow the Krajenbrink – Presman game from 1997.

2.31-27 22x31 3.36x27 White evades theoretical lines, while getting a good position controlling <27>.

3... 12-18 In a Chizhov – Sijbrands game from the world title match 1990, Chizhov continued 4.27-22 18x27 5.28-23 19x28 6.33x31 ... B) Can you think of a reason why white chose this quiet continuation, while he was trailing in the match and had to win a game in order to equalise?

4.41-36 7-12 5.46-41

We’ll watch the position after the logical continuation 19-23 6.28x19 14x23. C) Show a logical line in which white gets an active position. 5... 17-21 6.37-32 11-17 7.41-37 19-23 8.28x19 14x23 9.34-29 23x34 10.39x30 20-25 D) Comment on this move please! Would you also choose this continuation? We will now look at sharp play:

2.37-32 12-18 3.41-37 7-12 4.46-41 1-7 5.34-29

In part 3 of A course in draughts we showed the lines after 5... 19-23. We will look at another possibility for black.

5... 20-25 We will look at two continuations for white. 6.29-24 19x30 7.35x24 leads to the same position as after 5.34-30 20-25 6.30-24 19x30 7.35x24. 7... 14-20 is met by 8.39-34 or 8.33-29. E) How would you continue with white (and why)? White often plays 6.39-34

F) What’s the difference with the central 6.40-34 ? Some players, like the former Jannes van der Wal and (to name a modern player) the Dutch crack Wouter Sipma, like to play 6... 22-27 7.31x22 18x27 8.32x21 17x26. G) What strategy does black want to follow? We will look at a game in this opening from the world championship cadets 2012.

M. van Ijzendoorn - D. Rusaev

1.32-28 18-22 2.37-32 12-18 3.41-37 7-12 4.46-41 1-7 5.34-30 20-25 6.30-24 19x30

7.35x24 14-20 8.33-29 22x33 9.39x28 18-22 10.38-33 10-14 11.42-38 4-10 12.47-42

Black is ready to begin a rush on the white outpost. But white can defend against this repeated attack with precise play.


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12... 14-19 13.40-35 19x30 14.35x24 10-14

15.44-40 14-19 16.40-35 19x30 17.35x24 5-10

18.49-44! Martijn van IJzendoorn knows how to play this opening. Base piece <50> should stay on its spot. H) Can you give a logical line if white plays 18.50-44? 10-14 19.44-40 ?

18... 10-14 19.44-40 14-19 20.40-35 19x30 21.35x24 9-14 22.45-40 3-9 23.43-39! 14-19

24.40-35 19x30 25.35x24 9-14 26.48-43! The punchline of white’s play is that 26... 14-19 can be met by 27.32-27 due to the base piece on <50>. 27... 19x30 28.27x9 8-13 29.9x18 12x34 30.37-32 with an advantage for white, who has a stronger centre position. Rusaev chooses another move..

26.... 16-21 27.31-27 22x31 28.36x16 14-19 29.32-27 19x30 30.29-23! 20-24?

It was better to play 30-34x34. Now white gest a very strong attack.

31.27-22! 15-20 32.37-32 13-19 33.23x14 20x9 34.50-44 8-13 35.33-29 24x33 36.38x29

9-14 37.41-37 2-8 38.42-38 14-20 39.39-33 30-35 40.43-39 13-19 41.29-23 8-13 42.23x14

20x9 43.33-29 13-19 44.39-34 9-14

White has a winning position. I) Try to find the right way to finish off the game. 2) The wild horse 1.35-30 20-25 Agafonov-variation goes 1.33-29 15-20 2.29-23 19x28 4.32x23 18x29 5.34x23 25x34 6.40x29 A) Predict what kind of game will probably be played from this opening?

R. Vos – M. Podolski went: 6... 10-15 7.45-40 16-21! 8.37-32

8... 13-19! White should play 9.32-28 now. B) How did black gain a piece after 9.31-27? 19x37 10.27x16 ?

P. Roozenburg – P. Bergsma 1969 6.... 16-21 7.37-32 21-26 8.41-37 20-25

9.45-40 13-18 10.50-45 17-22 11.38-33 11-17 12.46-41 6-11

13.31-27 22x31 14.36x27 25-30!


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Black forces a win. He threatens to play 18-22 30-34 14-19 12x25 B+1. C) How should 15.40-35 be met? Usually white continues 2.40-35 15-20 3.45-40 20-24 4.33-29 24x33 5.38x29 Black can choose from several plans. 5... 17-22

D) Why should white not play 6.42-38? Gantwarg – Wiersma 1978 went as follows:

6.43-38 11-17 7.38-33 6-11 8.30-24 19x30 9.35x24 22-27 10.32x21 17x26

E) Try to describe this position. Would you rather play it with white or with black? Black usually performs another plan against the wild horse in recent games. 5... 10-15 6.50-45 5-10 7.42-38 16-21 E) Why is 8.31-26 not so attractive for white? 8.47-42 21-26 9.39-33

Black has two major options: 9... 17-22 and 9... 15-20. J. de Vries – K. Thijssen 2012 was: 9... 15-20 10.43-39? 10-15 11.30-24 19x30 12.35x24 18-22!

F) How do you judge this position? White should play (9... 15-20) 10.44-39 G) Why is this a more logical move than 43-39? Black has still another plan after 10.44-39 H) Which plan do we mean? Do you like this plan?


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Guessing the opening

Can you find the opening that leads to the

1 Black

2

3

4 Black

position shown?

5

6

7

8


35


1.34-30 20-25 2.30-24 19x30 3.35x24 18-22 4.33-29 14-20 5.38-33 10-14 6.32-28 16-21 7.37-32 11-16 8.43-38 6-11 9.31-27 22x31 10.36x27 21-26

A sharp and very interesting position. Theory says white has to play 41-36. A) Which strong move does black play if white continues 11.41-37?

11.41-36 4-10(!)

Theory says that white should play 12.47-41. Also interesting is 12.49-43?! the move of Erwin Heslinga. Black has an extra option, he can also play 11... 17-21 with sharp lines. B) How can black make a forcing after 12.46-41?

12.47-41 26-31!

The theory Sijbrands wrote about this opening didn’t contain this surprising move ... It was introduced in a game M. de Block – S. Kramer. C) Show the king shot black takes after 13.27-22?

The line continues: 13.27-21 16x27 14.32x21 17x26 15.36x27 14-19 16.40-35 19x30 17.35x24 9-14 18.44-40 14-19

19.40-35 19x30 20.35x24 10-14

Since white can’t defend the piece playing 21.45-40? White must defend horizontally:

21.28-23 13-19 22.24x13 8x28 23.33x22 14-19

With a better position for black. He can play around piece <22>, while controlling the other wing and white’s left wing isn’t developed well.

If white doesn’t want to play these lines, he can choose a line in which he goes to <15> 4) How does this line go?


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The Springer Contra Attaque

1.32-28 19-23 2.28x19 14x23 3.37-32 10-14 4.41-37 5-10 5.46-41 14-19 6.35-30 20-25 7.33-29 9-14 8.40-35 3-9 9.45-40 23-28 10.32x23 19x28

White must choose between 11.39-33 and 11.30-24 It’s no good playing the slow 11.50-45? 16-21! 12.31-26 21-27

A) How is 13.38-33 punished now? B) How is 13.37-31 punished? 13.30-24 is met by a pseudo-sacrifice: 13.. 28-33! 14.39x28 14-19 15.43-39 19x30 16.35x24 27-31 17.36x27 15-20 18.24x15 25-30 19.34x25 17-22 20.28x17 12x23. C) Why is black better after this play? 13.38-32 27x38 14.43x23 13-19 also gives black an advantage. Let’s have a look at (first diagram) 11.39-33 28x39 12.44x33 16-21 13.31-26 21-27 14.43-39

Black has two different strategies. The old strategy is to play a right wing attack: 14... 17-22 15.48-43 18-23 16.29x18 12x23. The modern strategy however is introduced by 14... 11-16 D) Which strategy does black want to follow? A nice strategic game to show the idea of black is Clerc- Gantwarg 1990. Clerc – Gantwarg 1990 1.32-28 19-23 2.28x19 14x23 3.37-32 10-14 4.41-37 14-19 5.46-41 5-10 6.35-30 20-25 7.40-35 9-14 8.33-29 3-9 9.45-40 23-28 10.32x23 19x28 11.39-33 28x39 12.44x33 16-21 13.31-26 21-27 14.43-39 11-16 15.48-43 17-21 16.26x17 12x21 17.37-32 7-12 18.41-37 6-11 19.33-28 21-26 20.32x21 26x17 21.38-33 16-21 22.42-38 21-26 23.38-32 1-6 24.30-24 17-21 25.28-23 21-27 26.32x21 26x17 27.50-44 17-22 28.33-28 22x33 29.39x28 11-17 30.43-38 6-11 31.44-39 11-16 32.38-33 18-22 33.49-43 22-27 34.43-38 17-22 35.28x17 12x21 36.24-20 15x24 37.29x20 10-15 38.34-29 15x24 39.29x20 8-12 40.40-34 21-26 41.34-29 12-17 42.20-15 17-22 43.29-24 13-19 44.24x13 9x29 45.33x24 2-8 46.39-33 8-13 47.33-29 13-18 48.38-33 14-20 49.37-32 27x38 50.33x42 22-28 51.42-37 16-21 52.36-31 18-22 53.37-32 28x37 54.31x42 22-28 55.24-19 20-24 56.19x30 25x23 57.35-30 28-33 58.30-25 33-39 59.25-20 39-43 60.42-38 43x32 61.20-14 21-27 62.47-42 27-31 63.14-9 4x13 64.15-10 13-19


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The second option in diagram 1 is 11.30-24.

The main line is: (11... 14-20 12.31-27 is also interesting) 11... 18-22 12.38-33 12-18 13.42-38 7-12 14.31-26 1-7 15.48-42

In H. Wiersma – K. Leesmann EU-ch 1999 15... 16-21? was played. The right move in this position is 15... 14-20. E) How is 15... 14-20 16.38-32? punished? The main line continues: 15... 14-20 16.37-31 10-14 18.41-37 21-27 19.35-30

Black shouldn’t play 19... 27-32? 20.38x27 11-16 because of 21.42-38

F) How does white meet 21... 17-21 22.26x17 12x41? 19... 4-10 is met by 20.24-19 13x35 21.29-23 18x29 22.34x21. The right move is 19... 11-16. Now white can choose from 20.24-19 13x35 21.29-24 20x29 22.34x21 16x27 23.33-28 (or 23.37-32) 22x33 24.31x11 6x17 25.39x28 and 20.38-32 27x38 21.43x23 7-11 22.33-28 22x33 23.39x28 18-22 24.42-38 22x42 25.47x38 (as in T. Sijbrands – J. de Leeuw). Wiersma – Leesmann was: 16... 14-20 17.24-19!! 13x24 18.38-32 10-14 19.32x23 22-28 20.33x13 8x28 21.43-38 24x33 22.38x29 20-24 23.29x20 15x24 24.49-43 4-10 25.36-31 2-8 26.42-38 17-22 27.26x17 12x21 28.34-30 25x34 29.40x20 14x25 30.38-32 21-27 31.32x21 11-16 32.21-17 22x11 33.43-38 8-13 34.31-27 7-12 35.47-42 10-14 36.38-33 12-17 37.33x22 17x28 38.42-38 11-17 39.27-22 28-33 40.39x28 14-19 41.22x11 6x17 42.44-39 13-18 43.45-40 9-13 44.40-34 19-24 45.39-33 13-19 46.38-32 18-23 47.37-31 17-21 48.31-27 21-26 49.28-22 26-31 50.27x36 25-30 51.34x25 23-29 52.22-18 29x27 53.18-12 24-29 54.12-7 29-33 55.7-1 (2-0).


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The Black panther Roozenburg attack

1.32-28 16-21 2.31-26 18-22 3.37-32 11-16

4.41-37 7-11 5.34-29 1-7 6.46-41 Georgiev played the interesting 6.39-34 against Jan Groenendijk. After 13-18 7.29-23 18x29 8.33x13 22x33 9.38x29 9x18 10.37-31 8-13 11.31-27 followed, with a dangerous right wing lock for black.

6.40-34 can be met by 13-18 followed by 19-23x23 and 21-27x27 black taking a right wing attack.This is the reason white plays 6.46-41. A) How would you react on 6... 13-18 now with white? Usually black plays the Andreiko variation with 6... 20-25, but even sharper is 20-24x24 with a Roozenburg-attack.

6... 20-24 7.29x20 15x24 8.40-34 13-18 9.37-31 21-27 10.32x21 16x27 11.42-37

White wants to attack the outpost as quickly as possible. This usually is the best plan against a Roozenburg-attack.

9-13 12.37-32 11-16 13.32x21 16x27 14.48-42 7-11 15.41-37

Black has to invent a plan to stop the rush oon black’s outpost. If he plays the slow 15... 10-15 (like in Lacroix – Kocken) the repeated attack on the outpost is very dangerous: 16.37-32 11-16 17.32x21 16x27 18.47-41 3-9? 19.34-30! 6-11 20.41-37 11-16 21.37-32 5-10 22.32x21 16x27 is a position black should avoid at all costs. 23.30-25 15-20 24.45-40 White can also win a piece by 24.33-29 24x33 25.38x29 22x24 26.31x11 12-17 27.11x22 18x27 28.42-37 13-18 29.43-38 etc W+1. 18-23 25.50-45 23x32 26.33-29 24x33 27.39x37 winning the outpost at <27>.

15... 11-16 16.37-32 6-11 17.32x21 16x27 18.47-41 2-7!!

If white would be able to attack <27> once more, black is lost, since defending with 11-16 will open the 31 x 2 track to king for white: 19.41-37 4-9 20.37-32 11-16 21.32x21 16x27 22.33-29! W+. But 19.41-37? Is punished by a kingshot now. B) How is 19.41-37 punished? C) How should black react on 19.34-29 ?

19.34-30 4-9 The point of black’s play is that white can’t play 20.41-37 now. D) How does the forcing for black go after 20.41-37 ?

20.30-25 18-23 21.45-40 23x32 22.33-29 24x33 23.39x37 19-23

The Roozenburg-attack is broken. A right wing attack for black remains. White has still a base


39

piece on <50>. Therefore the attack on <27> is still of concern.

If white attacks 24.37-32 black can make an exchange. E) How does this exchange go?

24.43-39 White wants to use the 39/44/50 tail in order to remove a piece on <28> if black uses the horizontal defence of the outpost. The main line used to be 24... 23-28 25.39-33 28x39 26.44x33 22-28 27.31x22 28x39 28.49-44 17x28 29.44x22 12-17 = as mentioned in a book of Sijbrands and De Schaap, Beter dammen. Salomé played 24... 13-19 agaisnt Vrijland, who went wrong attacking 25.37-32? F) Which kingshot did black perform?

24.... 14-19?! This move was introduced by Ben provost against Goedemoed. It turns out to be a brilliant trap.

G) Which great shot introduced by 17-21! follows if white attacks (like in the game) 25.37-32? As a matter of fact black could have

performed an anologue shot as after 24.. 13-19 25.37-32? but this (double) shot is even better.

25.40-34 An interesting game lies ahead. Black must choose from 25... 23-28 26.34-30 19-23 27.30-24! and 25... 10-14 26.37-32 23-28 27.32x23* 19x28 28.35-30 In both cases white can play against the right wing attack because he holds the 39/44/50 tail with the possibility to eliminate an outpost at <28>.

Piet Roozenburg (l) with Raoul Dagenais


40

A sharp position in the Chizhov-exchange variation of 1.32-28 19-23

We use the game R. Clerc – E. Watoetin 1994.

1.32-28 19-23 2.28x19 14x23 3.37-32 10-14 4.41-37 14-19 5.34-29 23x34 6.39x30 5-10 7.44-39 10-14 8.40-34 16-21

9.31-26 11-16 10.32-28 18-22 11.30-25 12-18 12.34-30 8-12

13.45-40 6-11 14.39-34 1-6 15.46-41 2-8 16.50-45 4-10

This sharp position has emerged in many games. Black played 16... 4-10 to be able to play 18-23 at the next move. The immediate 16... 18-23 can be met by 17.30-24 etc. White has several ideas to his proposal in this position. The main line used to be 17.37-31 18-23 18.34-29 and both captures are possible. Black wants to break the position and get an attack later, like in the Clerc – Vatoetin game. Later other moves were introduced. A) Nobody ever played 17.37-32? Why not? White can play 17.36-31?! hoping for his opponent to play the seemingly attractive 21-27. The right move is 17... 18-23. B) After 17.36-31?! 21-27 white wins by a double sacrifice! How does this go? White can also opt for 17.38-32. C) How would you continue with black after 17.38-32 21-27 18.32x21 16x27 19.43-38 ? After 17.37-31 black shouldn’t play 20-24?

D) How should white continue after 18.41-37! 18-23 in order to tactically take advantage of black’s weak left wing? In Clerc – Vatoetin black got a strong attack and won the game:

17.37-31 18-23 18.34-29 23x34 19.30x39 20-24 20.40-34 12-18 21.34-30 8-12 22.41-37 18-23

23.47-41 23x32 24.38x18 12x23 25.37-32 3-8 26.43-38 23-28

27.32x23 19x28 28.30x19 14x23 29.33x22 17x28 30.26x17 11x22

31.49-43 13-18 32.41-37 7-12 33.38-32 9-13 34.43-38 10-14

35.35-30 6-11 36.30-24 11-17 37.45-40 17-21 38.40-35 21-27 39.32x21 16x27 40.31-26 12-17 41.39-34 8-12 42.37-32 28x37 43.42x31 23-28 44.48-43 28-33 45.38x29 27-32 46.43-39 22-28 47.35-30 18-22 48.39-33 28x39

49.34x43 B+

We covered this position only superficially. E) If you want to know all details (or simply: more) about this opening position, how should you study it?


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Opening traps

Try to follow the game without a board. Which shot is performed? If it is too difficult to play the game blindly just play the moves on your board. 1) T. Sijbrands – G. Feldl EU-ch 1967 1.31-26 18-23 2.33-29 12-18?

2) H. Jansen – H. Vermin NLDch 1981 1.32-28 18-23 2.33-29 23x32 3.37x28 20-25 4.41-37 17-21 5.29-24 19x30 6.35x24 12-18 7.37-32 7-12 8.39-33 1-7 9.44-39 11-17 10.31-26 14-20? 3) H. Jansen – W. Wesselink 1.31-26 19-23 2.34-30 14-19 3.30-25 19-24 4.25x14 10x19 5.40-34 5-10 6.45-40 10-14 7.37-31 23-29 8.34x23 19x37 9.41x32 13-19 10.47-41 18-23 11.31-27 12-18? 4) B. Raven – A. Scholma NLD-ch 1996 1.33-28 20-25 2.39-33 15-20 3.44-39 10-15 4.31-26 5-10 5.36-31 18-22 6.34-29? 5) V. Wirny – A. Chizhov Maars 1991 1.32-28 19-23 2.28x19 14x23 3.37-32 10-14 4.41-37 17-21 5.34-29 23x34 6.39x30 11-17 7.44-39 7-11 8.50-44 1-7 9.30-25 13-19 10.35-30? 6) H. Grotenhuis ten Harkel – J. Krajenbrink Nijmegen 1990 1.32-28 18-22 2.37-32 12-18 3.41-37 7-12 4.46-41 1-7 5.34-30 20-25 6.30-24 19x30 7.35x24 14-20 8.33-29 22x33 9.39x28 18-22 10.38-33 10-14 11.43-39 13-18 12.42-38 9-13 13.31-26 14-19 14.40-35? 19x30 15.35x24 7) A. Chizhov – I. Dan-Gur 1983 1.33-29 19-23 2.35-30 20-25 3.40-35 14-20 4.44-40 10-14 5.38-33 14-19 6.30-24 19x30 7.35x24 17-22 8.42-38 9-14 9.32-28 23x32 10.37x17 11x22 11.41-37 16-21? 8) A. Baljakin – G. Schoenmakers 2007 1.32-28 17-22 2.28x17 11x22 3.37-32 6-11 4.41-37 12-17 5.46-41 7-12 6.31-26 19-23 7.34-29 23x34 8.40x29 16-21

9) M. Walraven – W. Koppejan 2006 1.34-30 18-23 2.30-25 12-18 3.40-34 7-12 4.34-30 17-21 5.31-26 1-7 6.26x17 12x21 7.37-31 21-26? 10) H. V.d. Zee – U. Ilves Tallinn 1996 1.34-29 19-23 2.40-34 14-19 3.45-40 10-14 4.32-28 23x32 5.37x28 5-10 6.42-37 17-22 7.28x17 11x22 8.37-32 6-11 9.41-37 1-6 10.31-26 19-23 11.46-41 22-27 12.32x21 16x27 13.48-42 14-19? 11) N. Waterink – R. Boomstra MTB Hoogeveen, 16-08-2011 1.34-30 18-22 2.40-34 12-18 3.30-25 7-12 4.45-40 19-23 5.34-30 1-7 6.31-27 22x31 7.36x27 17-21 8.33-28 11-17 9.28x19 14x23 10.25x14 10x19 11.39-33 7-11 12.33-28 21-26 13.41-36?

12) E. Bronstring – R. Clerc NLD-ch 1976 1.33-28 18-22 2.38-33 12-18 3.43-38 7-12 4.49-43 1-7 5.31-26 19-23 6.28x19 14x23 7.33-28 22x33 8.39x19 13x24 9.37-31 9-13 10.41-37 4-9 11.46-41 10-14 12.44-39 5-10 13.31-27 20-25 14.37-31?

13) T. Sijbrands – B. Habets Blindfold game 1966 1.31-27 17-21 2.37-31 21-26 3.41-37 19-23 4.33-28 14-19 5.39-33 10-14 6.34-30 20-24 7.44-39 12-17? 14) M. Sjawel – I. Koeperman 1955 1.31-26 19-23 2.37-31 14-19 3.41-37 10-14 4.46-41 5-10 5.31-27 20-24 6.34-30 24-29 7.33x24 23-28 8.32x23 18x20 9.30-25 20-24? 15) T. Sijbrands – J. Algra 1997 1.33-29 18-22 2.31-26 13-18 3.36-31 19-23 4.35-30 8-13 5.32-27 20-25 6.40-35 14-20 7.30-24 9-14 8.44-40 14-19 9.50-44 19x30 10.35x24 3-8 11.40-35 4-9 12.41-36 23-28? 16) R. Vipulis – A. Kalmakov 1.32-28 18-23 2.33-29 23x32 3.37x28 20-24 4.29x20 15x24 5.39-33 12-18 6.41-37 7-12 7.44-39 10-15 8.46-41 5-10 9.34-30 15-20 10.30-25 10-15 11.37-32 16-21 12.31-26?


42

Solutions

Choose your strategy!

1A) If you play this opening with black you need to have theoretical knowledge of the positions that can emerge on the board after 2.37-32 12-18 3.41-37 7-12 4.46-41 1-7. Black should be prepared for 5.34-30, 5.34-29 and 5.31-26. Black hopes his knowledge will give him the advantage to play these lines. B) Chizhov didn’t feel like playing sharp lines in the opening, since he feared the huge amount of knowledge Sijbrands has about opening theory. He wanted to evade Sijbrands’ opening preparation. In Chizhov’s opinion Sijbrands plays very strong in positions with an advantage, but he had little experience playing positions without an advantage. He hoped Sijbrands would make mistakes in these kinds of positions. So he chose simple openings, without giving the opponent any advantage again and again. Eventually Chizhov was successful in his strategy. In the 17

th game of the match

Sijbrands went wrong and lost a game, equalising the score. Chizhov remained world champion after a 20 – 20 score. C) M. Coenegracht – S. Buurke went: 7.36-31 1-7 8.41-36 10-14 9.47-41 14-19 10.37-32 5-10 11.41-37 10-14 White built a cannon at his left wing. Next exchange is standard in cannon play: 12.34-29 23x34 13.39x30 white having an active game with a strong centre and controlling <27>. D) Black offers his opponent 2 temps and a lot of space at the right flank. White uses this space to go to <29> and building a pyramid. White gets an active centre position and launches a centre attack. The game went: 11.44-39 25x34 12.40x29 1-7 13.39-34 10-14 14.45-40 14-20 15.43-39 5-10 16.49-43 10-14 17.50-45 21-26 18.35-30 20-25 19.29-23 18x29 20.34x23 25x34 21.40x29 13-18 22.39-34 7-11 23.34-30 17-21 24.43-39 14-19 25.23x14 9x20 26.48-43 20-25 27.29-23 25x34 28.39x30 18x29 29.33x24 8-13 30.38-33 13-18 31.33-28 2-8 32.43-38 12-17 33.38-33 3-9 34.30-25 8-13 35.45-40 9-14 36.40-35 17-22 37.28x17 11x31 38.36x27 4-9 39.33-28 18-22 40.28x17 21x12 41.42-38 6-11 42.38-33 11-17 43.33-28 13-18 44.47-41 9-13 45.41-36 17-21 46.35-30 14-19 47.25-20 26-31 48.37x8 13x2 49.24x22 15x35 50.22-18 35-40 51.18-13 40-44 52.13-9 44-49 53.9-3 49-43 54.28-23 43-48 55.3-26 48-25 56.23-19 25-3 57.19-13 3-25 58.32-28 W+

E) White can choose from two lines: 1) 8.39-34 20x29 9.34x23 18x29 10.33x24 22x33 11.38x29 If you want a quiet attack this is a good continuation for white. There is not much theory on this play. 2) 8.33-29 22x33 9.39x28 leads to a sharper position, but you have to know theoretical lines like: A) 9...17-21 10.29-23 20x29 11.23x34 21-26 You have to ask yourself if you want to play this type of game. White has a dangling piece on <41> compensated by a good centre position. If black plays 11-17 you have to choose: allowing a lock with 17-21 or going to the edge changing 27-21x21. B) 9...18-22 10.38-33 10-14 gives a theoretical line, but black can also play differently: 10...13-18 11.42-38 9-13 12.44-39 22-27 13.31x22 18x27 14.32x21 16x27 (or also 17x26) with an interesting modern game. The advantage for black is that white can’t rely on theoretical knowledge. F) 6.40-34 would allow 15-20 and after 7.45-40 19-23 8.28x19 14x23 9.32-28 23x32 10.37x28 black can centralise his pieces if he wants, changing 20-24x14. 6.39-34 eliminates the 15-20 move. 6.39-34 14-20 also isn’t attractive for black, after 7.29-23 18x29 8.34x14 10x19 9.43-39 piece <22. Is in an awkward position. G) Black wants to play a fork-lock game, usually without a piece on <15>. For example: 9.44-39 15-20 10.37-32 19-24 11.41-37 14-19 12.50-44 16-21 (I. Trofimov – W. Sipma) with an interesting game. H) 18.50-44 10-14 19.44-40 14-19 20.40-35 19x30 21.35x24 9-14 22.45-40 3-9 23.49-44 14-19 24.40-35 19x30 25.35x24 9-14 26.44-40 14-19 27.40-35 19x30 28.35x24 22-27 29.31x22 13-18 30.22x13 8x30 31.43-39 30-35 32.39-34 20-24 33.29x20 15x24 -/+ I) 45.44-39! (25-30 34x25 35-40 isn’t possible because of 29-24 +) 14-20 46.29-23 19-24 47.38-33 24-30 48.37-31 20-24 49.31-26 +.

2A) Black can try to play against the white centre attack. Black can also choose to change piece <23>. If piece <17> is gone he can change 12-18x18 without many risks, since he gains 4 temps and there will be an open game.

B) 9.31-27? 19x37 10.27x16 17-21 11.41x32 11-17 12.16x27 17-22 13.27x18 12x45 B+1


43

C) 15.40-35 should be met by 10-15 16.35x24 18-22 17.27x18 26-31 18.37x26 14-19 19.23x14* 12x34 20.39x30 9x27 B+1. In the game black took a wrong temp, opening king-square <1>: 15... 1-6? 16.35x24 18-22 17.27x18 26-31 18.37x26 14-19 and white could take 19.24x13! 8x46 20.26-21! 12x34 21.21x1 9-13 22.1x40 46-14 =.

D) 6.42-38? 19-24! 7.29x20 22-28 8.32x23 18x29 9.34x23 25x45 10.20-15 13-18 11.39-33 18x29 12.33x24 14-20 13.44-39 20x29 14.39-33 29-34 B+1

E) White has a right wing attack. His central defence is a bit weakened, <38 & 43> are missing in the Drenth-zone. Black has edge pieces <25 & 26> but no piece on <15>. Black has the Drenth pyramid to play against the attack. If white plays 31-27 black can chance the type of game changing 14-20 24x15 25-30 34x25 18-22 27x18 12x45 with a very interesting game. The Gantwarg – Wiersma game went: 11.42-38 11-17 12.47-42 17-22 13.31-27 22x31 14.36x27 12-17 15.37-31 26x37 16.42x31 8-12 17.49-43 17-21 18.48-42 21x32 19.38x27 12-17 20.41-37 7-12 21.37-32 17-21 22.46-41 21-26 23.42-37 12-17 24.41-36 17-21 25.24-20 10-15 26.50-45 15x24 27.29x20 2-8 28.20-15 5-10 29.40-35 White is arc-locked and has a lack of space. Black is better. 29... 13-19 30.43-38 18-23 31.33-28 8-13 32.38-33 1-7 33.35-30 14-20! 34.15x24 10-15? [ 34...9-14! 35.45-40 10-15 36.33-29 14-20 37.29x9 4x13 38.28-23 20x18 gives black the odds. ] 35.33-29 7-11 36.29x18 13x33 37.24x13 9x18 38.39x28 15-20 39.45-40 18-23 40.28x19 20-24 41.19-14 24x35 42.34-29 25-30 43.29-23 11-17 44.23-19 4-9 45.14-10 30-34 46.40x29 17-22 47.27x18 9-13 48.19x8 3x34 W+ F) White’s right wing attack is blocked and he is in big trouble. Black has the odds. In the game white played 13.31-27? 22x31 14.36x27 which cost a piece after 14-19! 15.40-35 19x30 16.35x24 17-22 17.27x18 12x23 18.29x18 20x40 19.45x34 13x22 B+1. 13.32-28 is met by 17-21! 14.28x17 11x22 and white’s attack is blocked, but he may be able to escape playing 15.49-43 21-27 16.34-30 25x23 17.24-19 13x24 18.33-29 23x34 19.39x10 9-14 20.10x19 4-10 21.43-39 3-9 22.40-34 and piece ,19> is defended (9-14 is met by 38-33-28 =). 13.49-43 14-19 14.40-35 19x30 15.35x24 12-18 doesn’t look attractive either for white.

G) 10.44-39 10-15 can be met 11.29-23 18x29 12.33x24 20x29 13.34x23 25x34 14.40x29 19x28 15.32x23 with a centre attack for white, although black can play against this attack, having many formations (all pieces in the Drenth-zone are still there!). H) 10.44-39 19-24 11.30x19 13x24 12.49-44 9-13 13.35-30 24x35 14.29-23 18x29 15.33x15 leads to a fascinating game, especially for black players who like to play against the edge piece on <15>.

Guessing the opening 1) Keller-opening: 1.33-29 17-22 2.39-33 11-17 3.44-39 6-11 4.50-44 1-6 5.31-26 16-21 6.32-28 19-23 7.28x19 14x23 8.35-30 10-14 9.30-24. 2) Korchov-opening: 1.32-28 17-22 2.28x17 11x22 3.37-32 12-17 4.31-26 6-11 5.36-31 8-12 6.32-27 16-21 7.27x16 22-28 8.33x22 18x36 3) Chizhov-attack 1.32-28 17-22 2.28x17 11x22 3.37-32 6-11 4.41-37 12-17 5.46-41 8-12 6.32-28 16-21 7.31-26 21-27 8.35-30 2-8 9.30-25 19-23 10.28x19 14x23 11.25x14 10x19

4) The Russian bear 1.32-28 20-25 2.37-32 15-20 3.41-37 10-15 4.46-41 5-10 5.31-27 19-23 6.28x19 14x23 7.33-28 9-14 8.28x19 14x23 9.39-33 10-14 10.36-31 5) Fork-lock opening 1.34-29 20-25 2.40-34 14-20 3.45-40 10-14 4.32-28 17-21 5.31-26 19-24 6.26x17 11x22 7.28x17 12x21

6) The big leap 1.31-27 17-22 2.36-31 22-28 3.32x23 19x28 4.33x22 16-21 5.27x16 18x36 6.37-32 14-19 7.41-37 10-14 7) The Fox 1.32-28 18-23 2.33-29 23x32 3.37x28 20-25 4.41-37 12-18 5.29-24 19x30 6.35x24 7-12 7.39-33 1-7 8.44-39 14-20 9.37-32 20x29 10.33x24 10-14 11.50-44 8) The Cheetah 1.34-30 20-25 2.30-24 19x30 3.35x24 18-22 4.33-29 14-20 5.38-33 10-14 6.32-28 16-21 7.37-32 11-16 8.43-38


44


A) Black plays 11...1-6! Threatening to play 17-22. For example: 12.49-43 17-22 13.27x18 12x34 14.40x29 14-19 winning the outpost. Therefore white has to fly to the edge playing 12.27-21 16x27 13.32x21 with an advantage for black. J. Terpstra – P. Schellekens went: 13... 5-10 14.46-41 17-22 15.28x17 11x22 16.21-16 14-19 17.40-35 19x30 18.35x24 10-14 19.45-40 14-19 20.40-35 19x30 21.35x24 9-14 22.44-40 3-9 23.49-44 14-19 24.40-35 19x30 25.35x24 9-14 26.37-32 22-27 27.32x21 26x17 28.44-40 14-19 29.40-35 19x30 30.35x24 4-9 31.50-45 9-14 32.45-40 14-19 33.40-35 19x30 34.35x24 13-18! 35.16-11 7x16 and with a piece more black won. B) A (rapid) game R. Heusdens – H. Wiersma went: 12.46-41? 14-19! 13.40-35 19x30 14.35x24 9-14 15.44-40 14-19 16.40-35 19x30 17.35x24 10-14 18.45-40 26-31! The point is that 19.27-21 fails due to 16x27 20.32x21 17x26 21.36x27 25-30! 22.24x35 20-24 23.29x18 12x45 B+1. 19.27-22 13-18 Even better than 31-37 25-30 20-24 etc. 20.36x27 18-23 21.28x10 17x46 22.10-4 46-28 23.33x22 8-13 24.4x18 12x21 B+

C) 13... 13-19!! 14.24x4 14-19 15.36x27 8-13 16.4x18 12x43 17.48x39 14-19 18.28x19 17x48

The Springer Contra Attaque A) 13.38-33 27-32 14.33x22 18x27 15.37x28 17-21 16.26x17 11x24 17.30x19 14x23 B) 13.37-31 28-33! 14.39x28 17-21 etc. B+1. C) Black holds the centre, while white has inactive edge pieces at <15, 25 & 26>. D) Black wants to play against the pieces at white’s right wing. He wants to play 17-21x21 and if white is ready to launch an attack with 29-23 after having played 48-43 & 50-45 black plays 18-22, so white’s right wing can’t be developed. E) 17... 10-14 18.32x23 22-28! 19.23x32 18-23 20.29x18 20x27 B+1. F) 23.38-32 28x26 24.33-28 22x33 25.29x38 20x29 26.34x1 25x34 27.40x29 and black can’t go to king (it is caught with 38-32).

4) 4.31-26 14-19 5.40-35 19x30 6.35x24 10-14 7.24-20 15x24 8.33-28 22x33 9.38x20 12-18 10.20-15

The black panther – Roozenburg attack A) 6.46-41 13-18 can be met by 7.29-23 18x29 8.33x13 9x18 9.37-31 22x33 10.39x28 and black has to take care for a right wing lock. We show a funny game in which black crashed quickly. R. Boomstra – E. Vjasnikov 1.32-28 17-21 2.37-32 11-17 3.31-26 18-22 4.41-37 7-11 5.34-29 1-7 6.46-41 13-18 7.29-23 18x29 8.33x13 22x33 9.39x28 9x18 10.37-31 14-19 11.41-37 10-14 12.44-39 20-24 13.40-34 18-23 14.31-27 15-20 15.39-33 8-13 16.34-29! 23x34 17.28-23 19x39 18.50-44 39x50 19.27-22 17x28 20.26x39 50x33 21.38x29 28-33 22.29x38 W+1

B) 19... 27-32! 20.38x27 24-29 with a king at <47> or <48>.

C) 19.34-29 4-9? 20.29x20 14x25 21.41-37 isn’t good for black. He should play 19... 27-32! 20.29x9 32x23 =. D) 20.41-37 18-23! 21.37-32 24-29! 22.33x24 22x33 23.38x18 27x47 24.31-27 13x31 25.24x15 11-16 26.26x37 14-20 27.15x24 47x15 B+ E) 24.37-32 22-28 25.31x33 23-28 26.32x23 14-20 27.25x14 1039 28.44x33 = F) 25.37-32 9-13! 26.32x21 14-20 27.25x14 23-28 28.14x32 22-27 29.31x22 17x46 G) 24...14-19 25.37-32 17-21!! 26.26x6 (26.26x28 12-18 etc. B+) 9-14 27.32x21 14-20 28.25x14 7-11 29.6x28 23x45 30.14x23 12-18 31.23x12 8x46 B+

A sharp position in the Chizhov-exchange

variation of 1.32-28 19-23 A) 17.37-32 fails due to a Mountain shot: 19-23! 18.28x19 14x23 19.25x5 22-28 20.33x22 17x46 21.26x17 12x21 and white’s king gets lost. B) 17.36-31 21-27 18.34-29! 27x36 19.37-31! 36x27 20.30-24 19x30 21.35x24 and black has no good reply against the 24-19 threat.


45

C) Black must either dare to play 19... 18-23 20.49-43 23x32 21.37x28 13-18 or go to <36> playing 19... 27-31 20.36x27 22x31. Both 19... 11-16? And 19... 20-24 are punished by a kingshot for white! D) Kirzner – Vatoetin was: 18.41-37 18-23 19.38-32! Black can’t play 21-27! because of 20.32x21 23x41 21.42-38 16x27 22.25-20 14x25 23.38-32 27x29 24.34x5 25x34 25.40x20 15x24 26.5x46 W+ 19... 12-18 20.43-38 8-12 21.31-27 22x31 22.36x27 3-8 23.37-31 Black’s right wing is locked and his position is lost., because of a lack of space. 23-29 24.34x23 18x29 25.49-43 13-18 26.43-39 18-22 27.27x18 12x23 28.28-22 17x37 29.26x17 11x22 30.39-34 37x26 31.25-20 14x25 32.33-28 23x43 33.34x1 25x34 34.48x19 W+ E) You can look for games in a database like Turbo Dambase or if you can’t afford to buy this program, you can look for games in the online Toernament Base (look at www.kndb.nl) and analyse the crucial games in which interesting ideas are shown. You can use a computer program to help analysing games, like Truus or Kingsrow.

Opening traps 1) 3.29-24! 20x29 4.32-28 23x32 5.34x21 16x27 6.37x28 W+ 2) 11.28-22! 17x37 12.42x31 20x29 13.26x17 12x21 14.34x1 3) 12.33-29! 23x45 13.27-21 16x27 14.32x23 19x28

4) 6... 19-23! 7.29x27 25-30 8.35x24 20x29 9.33x24 17-21 10.26x17 11x35 B+ 5) (missed!) 10... 20-24! 11.40-35 14-20 12.25x23 18x29 13.30x19 29-34 14.39x30 21-27 15.32x21 16x27 16.31x22 17x50 6) 15... 18-23! 16.29x27 20x29 17.33x24 17-21 18.26x17 11x22 B+ 7) 12.34-30 25x23 13.31-26 20x29 14.26x10 5x14 15.33x24 W+

8) 9.29-23! 18x29 10.33x24 20x29 11.32-27 22x31 12.36x18 13x22 13.45-40 W+

9) 8.33-29! 26x28 9.30-24 19x30 10.35x24 23x34 11.39x30 20x29 12.38-33 29x38 13.43x1

10) 14.36-31 27x36 15.37-31 36x27 16.33-28 23x32 17.29-24 20x29 18.34x5 W+

11) 13... 26-31 14.37x26 17-21 15.26x17 11x33 16.38x29 23x25 (or 23x45) B+ 12) 14... 24-30! 15.35x24 13-19 16.24x4 14-20 17.4x22 17x46 B+

13) 8.27-21! (The bomb shot) 16x27 9.32x12 23x41 10.12x23 19x28 11.30x10 5x14 12.33x22 26x37 13.42x31 W+

14) 10.25-20 14x25 11.27-22 17x28 12.26-21 16x27 13.38-32 27x38 14.43x5 W+ 15) 13.37-32 28x37 14.27-21 16x27 15.24-19 13x33 16.39x28 22x33 17.31x4 W+

16) 12... 18-22! Threatening 24-29 B+1. 13.50-44 is punished by 19-23!! 28x10 (28x30 14-19 22-28 Z+) 13-19 30x28 22-28 33x22 17x46 26x17 46x5 B+. 13.39-34 allows the same shot. 13.40-34 is met by 24-29! 34x23 21-27 32x21 22-27 21x32 17-22 28x17 19x46 B+.

http://www.kndb.nl/

46

In part 2 of ACID we offered a lot of theory about strategic play. We introduced different type of games. In part 3 strategic games were shown. We elaborate on strategy in these different kinds of game types in this big section. Studying the solutions is very important in this section. Making the exercises and studying the solutions will increase your insight in the game a lot, we hope! We used many examples of grandmaster games to show you high quality strategies!

S3. Strategy Basic rules Choose your plan! Classics Wing-control Playing against a weak left wing Semi-fork Fork-lock ATTACKING SYSTEMS: Right wing attack Roozenburg attack Centre attack Playing against an attack Solutions Guessing the moves Solutions guessing the moves

47

Basic rules

1) 1.35-30 is a good move

True / false

2) 1... 20-24 is a good move

True / false

Position after 1.32-28 19-23 2.28x19 14x23 3.33-28 23x32 4.37x28 10-14 5.39-33 5-10 6.44-39

3) 6... 17-22 7.28x17 11x22 is not a good move because white can take a semi-fork now.

True / false

4) White doesn't have to fear a semi-fork after 1.34-29 23x34 2.40x29 since there is no piece on <35>.

True / false

5) 1.40-34 isn't a good move, since it allows black to take a strong fork-lock.

True or false?

6) 1.34-30 is a strong move, it gives wing control in a classical position.

True / false

48

7) 7.31-26 is a good move, since it is developing white's left wing.

T / F

8) The advantage of NOT having a piece on centre square <28> is that white can use his 33/38/42 tail to go to <29>, by playing 1.33-29 24x33 2.38x29

T / F

9) An advantage of not having played 31-27 yet, is that white can launch a Hoogland attack now.

T / F

10) It is better to launch a right wing attack without playing 50-45 first.

T / F

11) Changing 27-22 would not yield any positive result for white.

T / F

12) It is too dangerous for white to launch a centre attack.

T / F

49

13

White should develop his left wing by playing 32-28!

T / F

14

Judge this position (white to move)!

15

Explain why white’s position is superior.

16

How do you judge this position (white to move)?

17


18

Judge this position (black to move)!

50

Building up

1

Which way to build up would you choose?

A) 38-32 43-38 49-43 B) 31-26 37-31 42-37

2

Which way to build up would you choose?

A) 42-38 43-39 48-43 44-40 B) 42-38 44-39 39-33 47-42

3

Which two moves are most logical to build up the position?

1.32-28 17-22 2.28x17 12x21 3.31-26 7-12 4.26x17 12x21 5.36-31 1-7 6.31-27 21x32 7.38x27

4

In the game A. Baliakin – Tereshko 7... 18-23 was played.

A) Explain why this is not the right move. B) Which move do you think white played in response of 7... 18-23?

5

Later in the same game this position emerged. White built up for seven moves. Guess the white position after these 7 moves. Draw the position in the empty diagram!

51

Choose your plan!

We show positions from the strategic game A. Andreiko – G. Zorn. Try to guess which move Andreiko played.

1

2

3

Which move would you choose?

4

5

6

52

7

A. Andreiko – R. Delhom

We see the same construction for white as Baliakin against Tereshko had. White played 31-27. Can you explain why he didn’t play 34-29x30?

8

White played 30-24x25. Why didn’t he play 33-29?

9

Now white does play 34-29x30. Explain why.

10

White played 30-24x34. Why is he making this exchange, losing 4 temps?

11

White played 33-29! Why is this a very strong move?

12

Black’s position is very poor because of the non-active piece on <6>. What is the right move to convert the advantage into a win?

53

Centre play

1

M. Deslauriers – I. Kuperman

How would you continue with black? Which plan do you follow?

2

H. Wiersma – P. Bergsma Which move do you prefer: 45-40 or 44-40?

3

Y. Anikeev – T. Burgerhout White played the remarkable 48-43?!

A) What is the intention of this move? B) You should be aware of the risks of this move, if you play it. What risk do we mean?

4

Cai Zhong - Qiu Hao Chun

Black achieved a strong centre position. How did he continue at this moment?

5

W. van der Kooij – G. Jansen

A) Explain why the position (with white to move) is better for black. B) Can you show one or more lines that show white’s problems?

54

6

Try to find the best plan for white! Can you show a logical line in which white’s strategy succeeds?

Use 15 minutes for analysing the position!

Comment on the moves!

D. van Schaik - K. Thijssen Prague 2012

1.32-28 20-25 2.31-27 19-23 3.28x19 14x23 4.38-32 10-14 5.33-28 5-10 6.28x19 14x23 7.39-33 10-14 8.44-39 13-19 9.43-38 8-13 10.49-43 2-8 11.37-31 14-20 12.41-37 9-14

13.46-41

13... 17-22 14.31-26 22x31 15.36x27 4-9 16.41-36 11-17 17.47-41 6-11 18.50-44 1-6

19.33-28

19... 20-24 20.34-30 25x34 21.40x20 14x25 22.38-33 9-14

23.36-31 3-9 24.41-36

55

24...17-22 25.28x17 11x22 26.33-28 22x33

27.39x28 14-20 28.43-38

28... 25-30! 29.35x24 20x29!

30.27-22 18x27 31.31x22 9-14 32.48-43 14-20 33.44-40 20-24 34.43-39

34... 16-21 35.26x17 12x21

36.40-35 15-20 37.39-34 29x40 38.35x44

38... 8-12! 39.45-40 23-29!

40.40-35

The rest of the game was:

40... 7-11 41.36-31 21-26 42.32-27 29-34 43.38-32 12-18 44.42-38 34-40

45.44-39 40-45 46.38-33 45-50 47.22-17 11x22 48.28x17 20-25 49.17-11 6x17

50.39-34 50x22 51.27-21 22x36 52.21x14 13-19 53.14x23 36-9 54.32-28 9-4

55.35-30 24x35 56.23-19 4-31 57.37-32 31-9 58.28-23 26-31 59.34-29 31-36

60.29-24 25-30 61.32-27 9x31 62.24-20 36-41 63.20-15 31-4 64.23-18 4x22

65.15-10 22-4 66.10-5 41-47 (0-2)

56

T. Sijbrands – H. van Klaveren Simultaneous game 1980

1.32-28 18-23 2.33-29 23x32 3.37x28 20-24 4.29x20 15x24 5.41-37 12-18 6.39-33 7-12 7.37-32 1-7 8.46-41 10-15 9.41-37 17-21

10.44-39 21-26 11.31-27 18-23

12.36-31

A) What’s the intention of this continuation?

12... 11-17 13.47-41 17-21 14.41-36 12-18 15.34-29 23x34 16.40x20 15x24

17.45-40 18-23 18.40-34 7-12 19.49-44

B) How does white continue after 19... 12-18 ?

19... 5-10 20.33-29 24x22 21.27x29 White breaks the classical structure.

21... 12-18 22.39-33 10-15

After 22...19-23 white can remove the piece on <23> by 23.43-39 (or 44-39 & 50-44) 6-11 24.33-28 11-17 25.28x19 13x33 26.39x28 17-22 27.28x17 21x12

23.35-30 14-20 24.30-25 19-24

The exchange 24...18-22 25.25x23 22-27 26.31x22 13-18 27.22x13 8x30 28.36-31 isn’t attractive, since black loses control over the centre.

25.25x14 9x20

C) Why doesn’t white fear the semi-fork, black took?

26.31-27 6-11 27.43-39 11-17 28.44-40

White built a strong pyramid. He is ready to launch a centre attack with 29-23x23. 28... 20-25 29.29x20 25x14 30.50-44 17-22 31.48-43 22x31 32.36x27 4-9 33.33-28

57

White controls the centre, but to win the game is a hard struggle, especially if black plays 33...18-22 34.28x17 21x12 35.38-33 etc.

33... 14-19 34.38-33 18-23 Black tries to make the position classical again, but this actually only helps white’s strategy.

35.40-35 2-7 36.42-38 15-20

White removes black’s centre piece.

37.34-29! 23x34 38.39x30 20-24 39.27-22!

White launches a Highland attack.

39... 7-12 40.44-39

D) How is 40... 12-18 punished?

White could also have played 40.43-39, for example: 12-17 41.22x11 16x7 42.28-22 9-14 43.32-28 14-20 44.22-18 13x22 45.28x17 21x12 46.30-25 8-13 47.25x23 13-18 48.44-40 18x29 49.39-34 W+

40...12-17 41.22x11 16x7 42.28-22!

E) How is 42... 9-14 met?

42... 7-12 42...7-11 is met by 43.32-28 11-16 44.38-32 8-12 45.28-23 19x17 46.30x8

43.32-28 12-18 44.28-23 19x17 45.30x19 13x24 46.37-31 26x37 47.38-32 37x28

48.33x4 (2-0)

P. Roozenburg – B. Wiggers 1967

1.31-27 18-23 2.33-28 17-21 3.37-31 12-18

4.39-33 7-12 5.44-39 21-26

6.49-44 26x37 7.42x31 A) Why does white take 4 temps in a classical position?

58

6.49-44 26x37 7.42x31 12-17 8.47-42 2-7 9.41-37 7-12 10.46-41 20-24

Occupying edge square <26> is part of white’s strategy. His centre is strong enough to afford an edge piece. This continuation is the beginning of a left-wing-attack.

11.31-26

B) How can white continue his strategy best after 11...14-20 12.37-31 10-14 13.41-37 5-10?

11... 17-21 12.26x17 11x31 13.36x27 14-20 14.37-31 10-14 15.42-37 5-10 16.41-36 20-25

White removes centrepiece <23> and starts the left-wing-attack.

17.34-29 23x34 18.40x20 15x24

19.27-21 16x27 20.31x22 18x27 21.32x21

Black can’t reinforce his beleaguered wing with 13-18?

21... 10-15 22.36-31 14-20 23.31-26 12-18 24.37-32

Black has no purpose for his pieces. He goes to the edge of the board. White centre position gets even stronger.

24... 24-30 25.35x24 20x29

26.33x24 19x30 27.39-33 30-35

28.45-40

Before continuing to play at the left wing, white centralizes piece <45>. The white centre position looks nice.

28... 9-14 29.21-16 14-19 30.32-27 4-9

31.27-21

White builds an active arrow on the left wing.

31... 1-7 32.38-32 15-20 33.40-34 20-24 34.43-39 8-12

59

White uses the arrow to change back, after which the left-wing attack keeps going.

35.21-17 12x21 36.16x27 18-23

37.26-21 13-18

38.28-22

C) Comment on this move!

38... 9-13 39.33-29! 24x33 40.39x28

D) What’s the goal of this exchange?

40... 3-9 41.44-39 9-14

42.21-17

Even stronger was 42.22-17! E) Show a line, beginning with 42.22-17, in which black is frozen out.

42...7-11 43.39-33

43... 14-20 43...11-16 44.17-12 18x7 45.33-29 25-30 46.29x20 30x39 is a much better defence.

44.17-12 18x7 45.33-29 25-30 46.29x9 30x39 47.9-3 20-25 48.22-18 19-24

49.18-13 24-29 50.13-9 39-44 51.50x39 29-34 52.39x30 25x34 53.9-4 34-39

54.3-25 39-44 55.25-34 (2-0)

Piet Roozenburg

60

P. Hoogteijling – M. Dolfing 2000

1.33-29 20-24 2.29x20 15x24 3.32-28 17-21 4.37-32 18-23 5.41-37 12-18 6.31-27 7-12 7.34-30 11-17 8.39-33 21-26 9.44-39 1-7

10.30-25 7-11 11.40-34

Black breaks open the classical position.

11... 24-30 12.35x24 19x30 13.28x19 14x23 14.45-40

14... 30-35 White has to decide what to do with piece <35>. The exchange he makes, brings about that he loses control over <44>, as white is not able to use the 33/39/44 tail anymore. This tail is useful for the defence of <27>.

15.50-45 35x44 16.49x40 17-21 17.34-29 23x34 18.39x30 12-17 19.40-35 10-14

20.45-40 5-10 21.40-34

A) Black has no piece on <15>. Why is this important for his strategy to succeed? Black puts pressure on <27> now.

21... 17-22 22.46-41 22x31 23.36x27 8-12 24.33-28 2-8 25.38-33 12-17 26.41-36

Black built the power-block for the second time, again putting pressure on <27>.

26... 17-22 27.28x17 11x31 28.36x27 6-11 29.43-38 11-17 30.33-28

Black breaks the position, getting rid of white’s pieces on <27 & 28>. After this, an attack on white’s left wing starts.

30... 18-22 31.27x18 13x33 32.38x29 17-22 33.29-24 8-13 34.42-38

61

Black centralises pieces on his left wing. All his pieces become active.

34... 14-19 35.34-29 10-14 36.38-33 22-27 37.24-20 27x38 38.33x42

The attack on white’s left wing continues.

38... 19-23 39.29x18 13x22 40.42-38 21-27 41.38-33

The attack goes on and on.

41... 27-31 42.30-24 31x42 43.48x37 16-21 44.35-30 21-27

45.24-19 Can you show a line after 45.33-29 in which white is frozen out completely?

45...14x23 46.20-14 9x20 47.25x14 23-28 48.33-29 27-31 49.29-24 31x42 50.47x38 26-31 51.24-19 31-36 52.19-13 36-41 (0-2)

62

Classics

1

Playing 48-43 is not good, because white shouldn’t play the golden piece.

True or false?

2

Black’s position is better, because he controls both wings!

True or false?

3

True or false: Black’s position is bad, because he has inactive pieces at <3 & 10>.

True or false?

4

White’s position is bad because of the dangling piece on <40>.

True or false?

5

5) White can take advantage of black’s weakened right wing.

True or false?

6

6) White can take advantage of the dangling piece on <20>.

True or false?

63

7

Try to judge this position (white to move)!

8

Black is better, since he controls both wings.

T / F

9

1.36-31 Which move is better now, 4-9 or 4-10 ?

10


11

Which move is better:

11-17 or 1-6?

12

White is losing, for he is frozen out.

T / F

64

13


14

Black to move can play a strong Ghestem-lock.

T / F

15

It is a good idea for black (to move) to go to the graveyard (<29>).

T / F

16

Guess how the game continued. White to move forced a win.

17


18

Judge this position (white to move)

65

19


20

Judge this position with black to move!

21


22


23

Which move is better: 31 – 26 or 34 – 30?

24

Judge this position with white to move. Sharp calculation is needed!

66

25

T. Goedemoed – E. Dollekamp (rapid)

White has played the Ghestem-lock, taking more space. Black can’t play many moves anymore on his right wing. Now white has to take the other wing under control.

1.40-34

Threatening to take an arrow-lock.

1... 24-29 2.34-30 20-24 3.43-38 2-7

Which move is better now: 4.45-40 or 4.47–41?

26

Which move is best: 30-25 or 40-35?

Try to follow the game without a board. Draw the position in the empty diagrams.

M. Shabhai – A. Georgiev Eu-ch 1995

1.32-28 19-23 2.28x19 14x23 3.33-28 23x32 4.37x28 10-14 5.39-33 14-19 6.41-37 5-10

7.44-39 9-14 8.46-41

8... 19-23 9.28x19 14x23 10.50-44 10-14 11.37-32 13-19 12.41-37 8-13 13.34-29

23x34 14.39x30 4-9 15.30-25

15... 18-23 16.44-39 12-18 17.31-27 7-12 18.33-28 2-8 19.39-33

19... 17-21 20.35-30 20-24 21.40-35 21-26 22.37-31 26x37 23.42x31

67

23... 11-17 24.47-42 17-21 25.49-44

25... 23-29 26.44-40 18-23 27.40-34 29x40 28.45x34

28... 24-29 29.33x24 14-20 30.25x14 9x40 31.35x44 15-20 32.43-39 1-7 33.39-34 7-11

34.44-40 20-24 35.40-35

35... 24-29 36.30-25 29x40 37.35x44

37... 23-29 38.44-40 3-9 39.48-43

39... 12-18

39...21-26? 40.43-39! 26x48 41.39-34 48x30 42.25x3 W+

40.27-22 18x27 41.31x22 21-26 42.40-35

42... 11-17 43.22x11 6x17 44.42-37

68

44... 19-23 45.28x19 13x24 46.32-28 29-34 47.38-32 8-12 48.37-31 26x37 49.32x41 12-18

50.41-37 9-14 51.36-31

51... 18-22 52.28-23 17-21 53.31-26 21-27 54.26-21 27-31 55.37x26 16x27

56.35-30 24x35 57.23-19 14x23 58.25-20 34-40 59.20-14 40-45 60.14-9

45-50 61.9-4 23-29 62.4-13 29-34 63.13-2 27-32 64.2-11 22-27 65.11-16

34-40 66.16-2 32-37 67.2-19 37-42 68.19-23 40-45 69.23-14 42-47 0-2 (2.59/2.22)

Alexander Georgiev

69

Calculation

C. van Leeuwen – R. Heusdens

1...7-11 2.43-38 1-6 3.44-39 3-9 4.48-42 9-13 5.47-41 11-16 6.42-37 17-21 7.41-36 12-17

8.36-31 21-26 9.27-22 17-21 10.31-27 6-11 11.39-33 11-17

12.22x11 16x7 13.27x16 13-18

14.28-22 18x27 15.32x21 26x17 16.37-31 17-22 17.31-26 23-28

18.26-21 28x39 19.38-32 39-44 B+

Draw the position in the empty diagram!

G. Vink – M. Kruyswijk

1.40-34 8-12 2.34-29 23x34 3.39x30 12-17 4.48-42 3-8 5.45-40 18-22 6.27x18 13x22 7.40-34 21-26 8.43-39 8-12 9.34-29 12-18

10.29x20 15x24 11.39-34 18-23

12.34-29 23x34 13.30x39 9-13 14.39-34 24-29 15.34x23 17-21 16.28x17 19x48 17.17-12 48-34

70

Wing control

1

D. Kootstra – S. Buurke

4.39-33?

A) Explain in words why this isn’t a good move!

The right way to play was: 4.44-40 18-23 5.38-33 12-18 6.40-35 8-12

White can change 34-30 now or at the next move. 1) 7.34-30 25x34 8.39x30 23-29 9.42-38 18-23 10.43-39! 29-34 11.28-22! 34x25 B) How does the line continue? 2) 7.42-38 12-17 White has to continue with 28-22x22 with a worse endgame after 23-28. C) Why can’t white play 8.34-30 25x34 9.39x30?

4...18-23 5.43-39

D) Try to find the winning plan for black!

5... 21-26? 6.44-40 12-18 7.28-22

E) Which move is black’s best chance now?

2

J. van Kesteren - O. Dijkstra

A) Describe the position B) How would you continue with white (to move)?

71

Making a movie

Use 6 diagrams to make a small movie of this game. Choose the moments white makes crucial decisions concerning his strategy.

T. M’bongo - S. Buurke 2-0 16-02-2013

1.32-28 17-22 2.28x17 12x21 3.33-28 7-12 4.39-33 19-23 5.28x19 14x23

6.44-39 9-14 7.34-30 4- 9 8.30-25 1- 7 9.40-34 14-19 10.25x14 9x20

11.31-27 21x32 12.38x27 19-24 13.34-29 23x34 14.39x19 13x24 15.42-38 10-14

16.37-32 11-17 17.45-40 18-22 18.27x18 12x23 19.41-37 7-12 20.46-41 5-10

21.49-44 3- 9 22.47-42 9-13 23.44-39 14-19 24.33-28 13-18 25.36-31 10-14

26.41-36 2- 7 27.39-33 7-11 28.43-39 17-22 29.28x17 11x22 30.31-27 22x31

31.36x27 6-11 32.37-31 8-13 33.33-28 11-17 34.31-26 20-25 35.50-45 15-20

36.38-33 25-30 37.42-38

72

Playing against a weak left wing

J. Krajenbrink – B. Ramdien

A clue for white’s strategy is black’s weak left wing. The arrow 25/30/35 (together with piece 33) keeps the pieces of white’s left wing at their spot.

1.43-39

A) It seems more logical to centralize piece <45> and to move the pieces from right to left. Why does white play this move?

1...9-13 2.39-34 18-23 3.34-29 23x34 4.30x39 19-23 5.32-27! 14-19 6.27-22! 17x28

7.33x22 10-14

B) Can you describe white’s strategy?

8.26-21 15-20 9.45-40 24-29

10.21-16 20-24

Piece 45 has got a function too. It helps protecting the right wing, so that white can safely proceed at the other wing.

11.31-27 C) What is white’s other important candidate move?

11... 14-20 12.25x14 19x10 13.27-21 13-1914.22-17 8-13 15.17x8 13x2 16.21-17 23-28 17.17-11 19-23 18.11-6 10-14

19.16-11 7x16 20.6-1 Black resigned.

R. Boomstra – E. Watoetin

A) Comment on the next 3 continuations!

36.37-31 26x37 37.42x31

37... 3-8

38.27-21

38... 11-17 39.21-16 13-18 40.31-27 20-24 41.43-39

73

B) Describe the position.

41... 23-29 42.39-33 18-23 43.16-11! 17-21 44.27x16 6x17 45.48-42 12-18 46.42-37 8-12

47.37-31

Black is frozen out. He sacrifices a piece, but can’t save the game.

47... 17-21 48.16x27 12-17 49.31-26 18-22 50.27x18 23x12 51.32-27 12-18 52.26-21 17x26 53.28-22 26-31 54.22x13 19x8 55.30x10 31x22 56.33x24 15x4 57.38-32 8-12 58.24-19 12-17 59.19-13 17-21 60.13-8 22-27

61.8-2 (2-0)

M. Koopmanschap – B. Provoost

Black is to move. Which move would you play and why?

Chinese draughts cards

74

Semi-fork

1

M. Linssen - P. Bouma

14.34-29! 23x34 15.40x29 10-14 16.35-30 19-23 17.30-25 23x34 18.39x30 1-7 19.44-39 13-19

20.30-24 19x30 21.25x34 14-19 22.45-40 9-14 23.40-35 15-20 24.34-30 19-23 25.46-41 8-13

26.39-34 20-25

27.34-29 A) Why does white change back and doesn’t he play 33-29 in order to surround the black centre?

27... 25x34 28.29x40 2-8 29.43-39 13-19 30.48-43 8-13

31.40-34 6-11 A dangerous move, since black can’t attack 17-21 anymore now.

32.33-29!

32... 14-20 B) Comment on this move!

33.35-30 20-25 34.31-26 C) Which strategy does white want to perform with breaking his own semi-fork?

34... 22x31 35.36x27 D) Why is 35... 23-28 not a good option for black now?

35... 17-22 36.41-36 22x31 37.36x27 11-17 Black should have tried 37... 23-28 now.

38.47-41 E) White can answer 38... 23-28 with a kingshot now. How does this go?

38... 3-8 39.38-32 17-22 40.41-36 22x31 41.36x27 12-17 42.43-38 17-22 43.39-33 22x31 44.26x37 7-12 45.33-28 12-17

F) How could white have won with a shot now?

75

46.37-31 4-10 47.29-24 17-21 48.31-27 21-26 49.42-37?

49.38-33 10-14 50.33-29 8-12 51.42-37 12-17 52.49-43 is winning convincingly.

49...10-14 50.49-43 8-12 51.43-39 12-17 52.39-33 16-21 53.27x16 18-22 54.24-20 23-29 55.20x27 29x40 56.27-21 25x34

57.21x12

Black didn’t succeed in making a draw. White won.

K. Thijssen – G. Mollink 2010 1.33-29 19-23 2.35-30 14-19 3.40-35 17-21

4.45-40 11-17 5.38-33 6-11 6.42-38 1-6 7.50-45

2

7... 21-27 8.31x22 18x27

More active is 8...17x28 9.33x22 18x27 10.29x18 12x23 11.32x21 16x27

9.29x18 13x22 10.32x21 17x26 11.37-31 26x37 12.41x32 12-18 13.46-41 7-12

14.41-37 9-13 More logical is is 14...16-21

15.37-31 Black can’t go to <27>, so white gets a semi-fork.

15... 10-14 16.32-27 19-23 17.30-25 14-19? White must have hoped black would make this weak exchange. Now he gets full control over the right wing.

18.25x14 19x10 19.34-29! 23x34 20.40x29 13-19 21.35-30 19-23

22.39-34!

White encircles the black centre.

22... 11-17 23.44-39 10-14 24.38-32! 17-21

25.31-26 White could also have played 25.30-24 14-20 25...14-19? 26.24x13 8x19 27.31-26 22x31 28.26x8 W+1 26.31-26 22x31 27.26x17 12x21 28.36x27 +/-

25...22x31 26.26x37! A) Comment on this move!

26... 5-10 After 26...14-19 white can also launch an attack: 27.45-40 8-13 28.40-35 3-8 29.30-24 19x30 30.35x24 5-10 31.47-41 +/-

27.30-24! 8-13 28.45-40

28... 3-8 B) Which shot can white perform after : 28...2-8 29.36-31 14-20 30.43-38 6-11 31.31-27 4-9 32.37-31 21-26 33.33-28 26x37 34.28x19 37x28

29.36-31 14-19 30.40-35! 19x30

76

31.34x25 23x34 32.39x30 White utilizes the dangling piece on <10>. Both 21-27 31x22 and 18-22 31-26 fail!

32... 10-14 33.32-28! 21-26 34.31-27! 4-10 35.33-29!

C) Describe the position.

35... 6-11 36.37-32 13-19 After 36...18-22 37.27x20 15x22 38.25-20 white breaks through quickly. In the game white gets a very strong attack.

37.30-24 19x30 38.35x24 11-17 39.43-38 8-13 40.49-44 14-19

41.28-22 17x37 42.29-23 18x20 43.25x5 2-0

3

A. Georgiev – H. Veenstra

A) What are candidate clues for white? B) Try to find the best for white. Don’t forget tactics!

Fork lock

1

A. Boxum - D. Kootstra

A) Judge the position. What are the relevant features?

B) Which move would you play with white to move?

2

Analyse this position. Try to find the best plan for white.

77

3

Analyse the position in order to find the right plan for white.

4

Analyse the position. What is white’s best move?

M. van Ballegooijen – T. Sijbrands 1997

1.32-28 20-25 2.33-29 17-22 3.28x17 12x21 4.37-32 7-12 5.39-33 14-20 6.44-39 21-26

7.32-28 26x37 8.41x32

Black takes the fork-lock, while changing centre piece <28>.

8... 19-23 9.28x19 13x24 10.46-41 10-14 11.41-37 9-13 12.37-31 1-7 13.50-44 5-10

14.32-28

Black changes the centrepiece with 18-22x21, a standard continuation in fork-lock games.

14... 18-22 15.28x17 12x21 16.38-32 21-26 17.32-28 26x37 18.42x31 4-9 19.43-38

A) Black plays 14-19. What’s the intention of this move?

78

19... 14-19 20.47-42 7-12 21.42-37 10-14 22.49-43 11-17 23.38-32

Black changes the centre piece again.

23... 17-22 24.28x17 12x21 25.32-28 8-12 26.43-38 3-8 27.31-26

Sijbrands must have calculated that the normal 2-7 26x17 12x21 doesn’t work. After 36-31 21-26 31-27 black can’t wait long enough. Therefore he prepares changing back.

27... 12-17 28.36-31 17-22 29.26x17 22x11 30.38-32 8-12 31.31-27

Sijbrands waits, playing 2-8. White escapes from the lock, changing 28-23x22x28, but black still has clues to play against. B) Which clues do we mean?

31... 2-8 32.28-23 19x28 33.33x22 24x33 34.39x28

34... 20-24 C) Why shouldn’t black play 34...12-18?

35.34-29 24x33 36.28x39

36... 12-18 37.39-33? White should have played 37.32-28. However, after 37... 11-17 38.22x11 6x17 white’s problems aren’t over. D) Which problems does white have?

37...14-20 38.33-28

E) Black forced the gain of a piece. How?

79

Edge pieces

K. Thijssen – M. Kloosterziel NLD-ch 2006

1.32-28 17-22 2.28x17 11x22 3.37-32 12-17

4.31-26 6-11 5.36-31 8-12 6.32-27 16-21 7.27x16 22-28 8.33x22 18x36 9.41-37 19-23

10.37-32 14-19 11.32-27

11... 12-18 Black can also choose 11...10-14 12.27-21 20-24 with a very sharp play. The arrow-lock of black’s right wing is compensated by a strong centre. It’s not easy for white to take advantage of the lock. Sometimes black escapes from the lock later.

12.27-21 7-12 13.16x7 2x11 14.21-16 1-7 15.39-33 10-14 16.44-39 5-10

17.46-41 20-25? A) How would you continue with black?

18.41-37 15-20 19.37-32 10-15 20.33-28! B) What is the strategic goal of this move?

4-10 21.39-33 20-24 22.42-37 3-8 23.34-29 23x34 24.40x20 15x24 25.43-39 18-23 26.45-40 13-18 27.49-43 9-13 28.40-34

28... 24-30 29.35x24 19x30 30.28x19 14x23 31.33-28 10-15 32.28x19 13x24 33.38-33 8-13 34.32-28 13-19 35.43-38

15-20 36.37-32

Black’s position is split. He doesn’t have a single piece in the Drenth-zone. After the exchange, white controls the entire board.

36... 19-23 37.28x19 24x13 38.34-29 39.29x20 25x14 40.32-28

D) How does white respond to 40... 14-19?

40... 30-35 41.50-44 13-19 42.28-23 18x29 43.33x13 12-18 44.13x22 17x28

45.26-21 2-0

A. Georgiev – R. Boomstra Rapid Match 2013

1.33-28 18-22 2.38-33 12-18 3.34-29 7-12

4.42-38 16-21 A) Why is 5.31-26 not so attractive for white? 5.47-42 19-23 6.28x19 14x34 7.40x29 21-27 8.32x21 17x26 9.35-30 20-25 10.30-24 1-7

11.45-40 10-14

80

White accepts the invitation to go to <15>.

12.24-20 15x24 13.29x20 11-17 14.38-32 7-11 15.43-38 14-19 16.20-15 5-10

17.49-43 9-14

Black built a solid position with many formations.

18.40-35 11-16 19.31-27 22x31 20.36x27 17-21 21.33-28 2-7 22.39-33

22... 19-24! Black’s position is more flexible than the white one.

23.50-45 14-19 24.44-40 7-11 25.37-31 26x37 26.42x31 18-23!

B) Why doesn’t black play 26... 21-26?

27.41-37 21-26 28.46-41 12-17

This is better than 28...11-17 29.41-36 17-21 30.33-29 24x42 31.35-30 25x34 32.40x7 etc.

29.41-36 17-21 30.48-42 3-9

C) Explain why white’s position is bad.

31.33-29 24x22 32.27x29 8-12 33.43-39 12-18 34.40-34

34.29-24 19x30 35.35x24 is a better defence.

34...10-14 35.45-40 18-22

White is on a dead end. He can’t go anywhere. The piece on <15> makes it impossible to go to <33>. D) How is 36.38-33 punished?

36.29-23 19x28 37.32x23 11-17 Black could also have performed a shot beginning with 37... 25-30! Check this yourself. Black’s positional approach is good as well. He threatens to play 6-11 and 22-27.

38.38-32 22-28 39.23-19 14x23 White resigned.

81

Attacking systems

Right wing attack

We show a strong attacking game of the young Dutch international grandmaster Pim Meurs against another strong grandmaster. Try to comment on the moves played in each diagram!

A. Baliakin – P. Meurs

Prague 2012

1.32-28 18-22 2.37-32 12-18 3.34-29 7-12 4.40-34 1-7 5.45-40 19-23 6.28x19 14x23

7.32-28 23x32 8.38x27 13-19 9.42-38

9... 19-23 10.31-26 22x31 11.26x37 10-14 12.35-30 8-13 13.50-45

13... 20-25 14.37-32 5-10 15.30-24 3-8

16.47-42

16... 17-21! 17.40-35 14-20 18.33-28 9-14 19.28x19 14x23

20.42-37

20... 21-27! 21.32x21 16x27 22.38-33 11-17 23.37-31 17-22

24.41-37 6-11 25.46-41

82

25... 23-28! 26.43-38 11-17 27.45-40 10-14

28.38-32? 27x38 29.33x42

29... 7-11!30.31-27 22x31 31.36x27

31... 2-7! 32.49-43 4-9 33.37-31

33... 18-23! 34.29x18 13x22

35.27x18 12x23 36.24-19 9-13 37.19x10 15x4 38.43-38

38 ... 20-24 39.41-37 13-18 40.31-27 7-12 41.37-32 28x37 42.42x31

83

42... 23-28! 43.31-26 28-32 44.48-42 32x43! 45.39x48 11-16

White resigned.

Roozenburg attack

A. Tjon A Ong – W. Bor

Both players have built up their positions and it is time for white to break the Roozenburg-attack with the typical

1.33-28!

Black replied 1... 11-17? in the game (a losing move) 2.28x19 and now two possibilities;

A) How is 2...18-22 3.27x18 12x14 punished?

B) How does white meet 2... 4-10? Black should have played

1... 4-10 2.28x19 18-22 3.27x18 12x14 We see the usual transition from a Roozenburg-attack to a right wing attack. White wants to eliminate the 14-19 move now.

C) Why does white want to prevent black from playing 14-19 ?

4.38-33! D) How is 4... 14-19? punished?

4... 7-12 5.32-28 E) How is 5... 14-19? punished?

5... 11-17

F) With which move does white continue?

A. van Leeuwen – J. Krajenbrink 1992

1.32-28 17-22 2.28x17 11x22 3.37-32 6-11 4.41-37 12-17 5.46-41 7-12 6.34-29 19-23

7.40-34 14-19 8.32-28 23x32 9.37x28

White is preparing the attack.

9... 16-21 10.31-26 10-14 11.45-40 5-10 12.41-37 1-6 13.37-32

84

Black takes <24>. Although black’s right wing seems a bit weak, he can get a good Roozenburg attack. 13... 20-24 14.29x20 15x24 15.47-41 2-7 16.41-37 11-16 17.37-31 7-11 18.34-30

Black launches the Roozenburg attack.

18... 21-27 19.32x21 16x27 20.40-34

A) Why doesn’t black play 18-23? 20... 10-15 21.30-25 4-10 22.34-30

Black waits even longer with the standard 18-23. As a matter of fact he doesn’t play 18-23 at all, but surprises his opponent with a special plan!

22... 15-20 23.50-45 After 23.39-34 black does attack with 18-23!

23... 10-15 24.45-40

Black puts pressure on piece <28> by taking another outpost at <29>. 24... 24-29! 25.33x24 22x33 26.39x28 20x29 27.31x22 18x27 28.40-34 29x40 29.30-24 19x30 30.25x45 14-19 31.38-33

31... 12-18?

85

B) How could black have forced the win of a piece?

32.43-38

Black launches a strong right wing attack.

32... 17-22 33.28x17 11x22 34.44-39

Black takes centre square <23>. After this he reinforces his centre.

34... 19-23 35.45-40 13-19 36.40-34 8-13 37.42-37 6-11 38.48-42

38... 9-14 39.37-32 C) Which kingshot did black take now?

Centre attack

1

N. de la Fonteyne – M. de Meulenare

1.29-23! A very strong attack! White can use his tails 37/42/48 & 33/38/42 to put pressure on <27>. A) How is 1... 13-19 punished?

1... 13-18

In the game 2.33-29? was played and the game ended in a draw. Analysis showed that white becomes great winning chances after this continuation 2.30-25.

2.30-25 18x29 3.34x23 8-13 4.33-28 22x33 5.38x29

Black has a defensive line that is very hard to find. 5...26-31! 6.37x26 12-17! B) How is 6...13-19 punished? 7.42-38 17-22! 7...13-19 8.23-18 19-23 9.36-31 23x45 10.31x2 W+

86

8.25-20 14x25 9.29-24 9-14 10.40-34 4-10 11.48-42 10-15 12.38-33 7-12 13.33-29 14-19 14.23x14 12-18= C) Why does the defence 5... 27-31? 6.36x27 13-19 fail? We investigate how white wins after the most logical continuation.

5... 7-11 6.40-34 6.37-31 26x37 7.42x22 12-17 8.23-18 17x28 9.18-12 is also strong. We show the more strategic approach.

6... 12-17 7.34-30 17-22 8.42-38 4-10 9.30-24 10-15 10.38-33 11-17

11.33-28 D) Why not 11.48-42?

11...22x33 12.29x38 17-22 13.38-33 15-20 14.24x15 13-19 15.23-18 22x13 16.25-20 14x25 17.15-10 19-24 18.10-4 24-30 19.33-29 30-35 20.29-23 W+

2

T. Goedemoed – R. Koopmanschap Rapid

White launched a centre attack. He hoped to take advantage from the missing pieces on <4 & 9> and the lack of space on black’s right wing.

1.29-23 18x29 2.34x23 25x34 3.40x29 13-18 4.45-40 3-9

How should white continue: with 5.39-34 or 5.35-30?

3

J. Groenendijk – R. Wijnker

1.49-44? Instead of taking a right wing attack, playing 1.32-28 23x32 2.37x28 26x37 3.41x32, white plays a base piece.

1...22-28! 2.33x22 17x28 A) Why is this exchange so strong?

3.31-27 10-14 4.40-35

B) Which great shot did black perform?

87

Playing against an attack

K. Thijssen – S. Winkel White is blocking black’s right wing attack. Black misses the 7/12/18 tail, so he can’t change 18-23x23 and take the centre. How would you continue with white to play?

Use 12 minutes!

C.B. Bakker – J. Krajenbrink Black is to move. Which move would you play and why?

A. Gantwarg – J. Goudt Minsk 1986

1.32-28 19-23 2.28x19 14x23 3.37-32 10-14 4.41-37 5-10 5.46-41 14-19 6.35-30 20-25 7.40-35 15-20 8.44-40 20-24 9.50-44 17-21

10.34-29 23x34 11.40x20 25x14

G. Valneris – M. Durdyev (Wch 1996) was 12.32-27 21x32 13.38x27 and white built a canon. Gantwarg provokes his opponent into taking a right wing attack. This attack simply can’t be bad, since black has no weaknesses, so black takes it. 12.31-26 12...21-27 13.32x21 16x27 14.39-34 18-22 15.43-39 19-23 16.48-43 13-19 17.30-25

8-13 18.34-30 10-15 19.45-40 2-8 20.40-34 12-18 21.33-29

White built a well-known construction against a right wing attack.

21... 7-12 22.39-33 11-17 23.44-39 6-11 24.37-31

We will investigate the position after 24... 23-28 25.41-37

88

A) How do you judge the position after 25...11-16 26.38-32 27x38 27.43x23 19x28 28.31-27 22x31 29.33x11 16x7 30.36x27 18-23 31.29x18 13x31 32.39-33?

25...19-23 26.38-32 27x38 27.43x32 1-7

28.31-27! 22x31 29.36x27

B) How do you judge the position after 29...17-22 30.27-21 11-16 31.42-38 16x27 32.32x21?

29... 14-19 30.33x22 17x28 31.30-24 19x30 32.35x24 11-16 33.49-44

C) How do you judge the position after 33...18-22 34.29x18 22x31 35.32x23 13x22 36.34-29? D) How does white meet 33... 4-10?

We go back to the diagram above exercise A. E) How would you meet 25... 1-7 (see diagram)? Let’s return to the game.

24... 1-7 25.41-37 14-20 26.25x14 19x10 27.30-24!

Going to <24> is strong, since base piece <2> is missing. After 10-14 white could make a kingshot. F) How does this kingshot go?

27... 9-14 28.35-30!

28... 23-28 G) How is 28... 14-19 punished?

29.30-25 H) How can white meet 29... 3-9 in the strongest way?

29... 14-19 30.38-32! 19x30 31.32x21?

It was better to choose the other exchange: 31.32x23 for example: 30-35 32.42-38 10-14

89

33.34-30 35x24 34.29x9 3x14 35.47-42 18x29 36.33x24 14-19 37.37-32 19x30 38.25x34 11-16 39.32x21 16x27 40.42-37 7-11 41.37-32 11-16 42.32x21 16x27 43.38-32 27x38 44.43x32 +/-

31...10-14 32.43-38 30-35

33.34-30 I) Why is 33.38-32? not a good idea? 33.49-44 was a serious alternative: 33... 4-9 34.47-41 14-19 35.21-16 9-14 36.31-27 22x31 37.36x27 3-9 38.33x22 17x28 39.38-33 12-17 40.33x22 17x28 41.29-23 18x49 42.39-34 49x21 43.26x6 +/-

33...35x24 34.29x9 3x14 35.47-41 This plan doesn’t work.

35... 4-9 36.31-27 22x31 37.36x27 18-22 38.27x18 13x22 39.37-31 15-20

40.41-36?? J) How could black have won now? 40...20-24?? 41.31-27! 22x31 42.36x27 17-22 43.27x18 12x23 44.33x22 11-16 45.21-17 16-21 46.17-11 7x16 47.26x17 9-13 48.49-44 13-19 49.44-40 14-20 50.25x14 19x10

Black resigned

A. Schwarzman – A. Berçot Cannes, 17-02-1993

1.33-29 17-22 2.39-33 11-17 3.44-39 6-11 4.50-44 1-6

5.31-26 16-21 6.32-28 19-23 7.28x19 14x23

The main line in the Keller-opening is 8.35-30 10-14 9.30-24, but Schwarzman often plays this alternative line.

8.29-24 20x29 9.33x24 10-14

10.34-30 Schwarzman sometimes opts for 10.24-19 13x24 11.34-29 24x33 12.39x10 5x14 13.37-32. Apart from 10... 14-19 as in the game, 10.34-30 can also be met by the sharp 10... 23-28 or by 10... 14-20 11.39-33 20x29 12.33x24 13-19 13.24x13 8x19.

10... 14-19 11.37-32 11-16 12.41-37 5-10 13.30-25 19x3014.25x34 7-11 15.46-41 13-19

16.35-30 10-14 17.30-25 9-13

18.40-35! A brave move. White usually plays 18.34-29 23x34 19.40x29, but Schwarzman chooses to radically surround the black right wing attack.

90

18... 21-27 19.32x21 16x27 20.38-33 14-20 21.25x14 19x10 22.37-31 13-19 23.42-38 8-13 24.35-30 10-14 25.44-40 4-9 26.30-24 19x30

27.34x25 14-19

28.39-34! A) Why doesn’t white play 28.40-34 instead of 28.39-34?

28... 9-14 29.43-39 23-28 Probably the more calm 29... 14-20 30.25x14 19x10 is better.

30.48-43 19-23 31.34-29 23x34 32.40x29 2-7 33.45-40 3-9

34.40-34 18-23 35.29x18 12x23 Black conquers centre-square <23>, but white can play against the inactive pieces on black’s right wing now. 36.33-29 13-18 37.41-37 B) White is threatening to play .........

37... 7-12 38.38-33 9-13 39.47-42 11-16 40.42-38 15-20

We saw white moving in the right direction again.

41.49-44! White doesn’t use his 38/43/49 tail, but uses piece <49> for reinforcing his own right wing. C) Why is this move better than 41.37-32 28x37 42.31x42 or 41.38-32 27x38 42.43x32?

41... 6-11? Black should have changed 14-19x10 immediately.

42.37-32! 28x37 43.31x42 The right moment to change back. D) How is 43... 14-19 44.25x14 19x10 punished now?

43... 13-19 44.44-40

Black suffers from a lack of space. E) Give a logical line after 44... 16-21.

44... 19-24 45.40-35 27-32 46.38x27 22x31 47.36x27 23-28 48.33x13 24x44 49.43-39 44x33

50.13-9 14x3 51.25x14 Black resigned.

A. Baliakin – H. Meijer NLD-ch 2004

1.32-28 17-22 2.28x17 12x21 3.34-30 7-12

4.30-25 11-17 5.31-26 6-11 6.36-31 1-6 7.41-36 19-23 8.35-30 14-19 9.25x14 9x20

10.30-25 4-9 11.25x14 9x20 12.40-34 10-14 13.45-40 5-10 14.46-41 2-7 15.50-45 3-9

16.40-35

91

White surrounds the black centre position.

16... 23-29 17.34x23 19x28 18.33x22 18x27 19.31x22 17x28 20.26x17 11x22 21.36-31 16-21 22.41-36 14-19 23.35-30

10-14 24.30-25 12-18 25.44-40 7-12 26.40-35 6-11 27.45-40 11-16 28.40-34

A) Which move would you advice black to play? 28... 19-23? 29.38-32! 21-27 30.32x21 16x27

31.43-38

B) How can white force the win after 31...20-24 ?

31... 12-17 32.48-43 8-12

33.38-32 C) How could white have forced a win in another way than Baliakin plays?

33...27x38 34.42x33 17-21 35.34-29

23x34 36.39x30 28x48 37.31-26 48x31 38.26x10 15x4 39.25x3 31-26 40.30-24

22-27 2-0

92

A. Gerritsen – A. Domchev 1.32-28 16-21 2.31-26 18-22 3.37-32 11-16 4.41-37 7-11 5.34-29 1- 7 6.40-34 13-18 7.45-40 19-23 8.28x19 14x23 9.46-41 21-27 10.32x21 16x27

11.29-24 20x29 12.33x24 9-13 13.34-30 13-19 14.24x13 8x19 15.38-33 4- 9

16.37-31 9-13 17.42-38 10-14 18.40-34 14-20 19.30-25 3- 8 20.25x14 19x10

21.35-30 15-20 22.30-25 10-14 23.34-30 14-19 24.25x14 19x10 25.50-45 10-14

26.30-25 23-28 27.41-37 11-16 28.37-32 28x37 29.31x42 13-19 30.44-40 5-10

31.39-34 18-23 32.34-30 12-18 33.40-34 7-12 34.45-40 10-15 35.33-29 14-20

36.25x14 19x10 37.30-25 10-14 38.40-35 8-13 39.43-39 13-19 40.35-30 2- 8

41.38-33 14-20 42.25x14 19x10 43.30-24 10-14 44.24-19 23-28 45.19x10 15x 4

46.48-43 8-13 47.34-30 6-11 48.30-25 4-10 49.25-20 10-14 50.20x 9 13x 4

51.29-24 18-23 52.42-37 27-32 53.37-31 23-29 54.24-20 29x38 55.20-15

93

T. Sijbrands – L. Haan 1.33-29 19-24 2.39-33 14-19 3.44-39 20-25 4.29x20 25x14 5.35-30 19-23

6.50-44 14-19 7.33-29 10-14 8.38-33 17-22 9.42-38 11-17 10.32-28 23x32

11.37x28 6-11 12.41-37 5-10 13.30-24 19x30 14.34x25 1- 6 15.46-41 16-21

16.31-26 11-16 17.37-32 21-27 18.32x21 16x27 19.48-42 14-19 20.29-24 19x30

21.25x34 9-14 22.34-29 7-11 23.40-34 13-19 24.45-40 19-23 25.28x19 14x23

26.40-35 3- 9 27.35-30 9-13 28.41-37 10-14 29.37-31 4-10 30.30-25 14-19

31.25-20 15x24 32.29x20 10-14 33.20x 9 13x 4 34.33-29 4-10 35.38-33 8-13

36.44-40 10-15 37.29-24 19x30 38.34x25 23-28 39.40-34 18-23 40.33-29 12-18

41.42-38 13-19 42.38-33 15-20 43.25x14 19x10 44.29-24 10-15 45.43-38 2- 8

46.33-29 8-13 47.38-33 13-19 48.24x13 18x 9 49.29x18 22x13 50.31x22 28-32

51.47-42 17x28 52.33x22 11-17 53.22x11 6x17 54.42-38 32x43 55.49x38 13-18

56.36-31 9-13 57.31-27 13-19 58.27-21 19-23 59.21x12 18x 7 60.34-30 15-20

61.26-21

94

Solutions

Basic rules

True or false

1) True 1.35-30! White activates edge piece <35>. All pieces become active. 2) False 1...20-24 is not a good move, for white can take a chain-lock now: 2.32-27! and black’s space to play is reduced severely. 3) False It’s not true, since black can play actively: 8.41-37 (8.38-32 can be met by 22-28 9.32x23 18x38 10.43x32 20-24) 8...16-21! 9.31-26 21-27 although white can try to isolate the outpost now with 10.50-44 6-11 11.33-28 22x33 12.39x28 11-17, the defence of the outpost looks okay for black. 4) True 2... 14-20 3.45-40 19-24 White doesn’t need to fear the semi-fork. White can even go to <23> immediately if he wants with 4.29-23 with a centre attack.

5) True After 1.40-34? 14-19! 2.37-31 19-23! 3.28x19 13x24 black has a strong fork-lock.

6) False This is not true, white gives up the 34/40/45 tail too early. He can instead immediately use it to put pressure on <24>: 1.34-29! 23x34 2.40x20 15x24 3.39-34! 7) True White develops his left wing. There is no tactical way for black to use the free move.

8) True White takes more space. After the logical 1-7-12 he can conquer <24>. The game T. Goedemoed – B. Wollaert (2013) was: 1.33-29 The attempt to use the vulnerable spot on <19> playing 1.33-28 1-7 2.40-35 (with the intention 34-30) fails due to a Harlem shot! Check this yourself. 1.... 24x33 2.38x29 1-7 3.43-38 7-12 4.34-30 12-18 5.29-24 19-23 6.44-39 14-19 7.39-33 9-14 8.40-34 with a winning surrounding of black’s centre. 8... 11-17 9.33-28 17-21 10.38-33 6-11 11.30-25 19x39 12.28x10 39x28 13.32x12 21x41 14.36x47 W+

9) True 1.34-29 23x34 2.40x20 15x24 Black might choose 14x25 (for wing control). 3.28-22 18x27 4.31x22 gives white a Highland attack. 1.31-27 would instead give white an awkward left wing with inactive piece on <46>.

10) True 1.30-24 19x30 2.35x24 White can still play 50-44 now, using the 33/39/44 tail (if black goes to 22 white might use the 33-28x28 exchange, taking the centre) 17-21 3.50-44 13-18 4.34-29 18-22 5.28x17 11x22 6.33-28 22x33 7.39x28

11) False 1.27-22! 18x27 2.31x11 6x17 3.36-31 White weakened black’s right wing and occupies <27> again. Black can’t use the Olympic formation again.

12) False The circumstances for taking a centre attack are good. Black has no base pieces and white has enough formations to back the outpost on <23> after 1.28-23! 18x29 2.34x23 19x28 3.32x23

13) N. Hoving – I. Trofimov False: white’s left wing isn’t developed yet, but the logical move is punished tactically: 1.32-28? Black has prepared a trap to punish the logical move. 1.40-34 13-18 2.48-43 2.38-33? Is met by 14-20! 3.25x14 3-9 4.14x3 18-22 5.27x18 12x23 6.3x21 16x36 2...14-19 and white’s left wing isn’t developed, so black is better. 1...14-20! 2.25x14 24-30 3.35x24 3-9 4.14x3 17-21 5.3x17 21x43 6.48x39 11x35 B+1 14) B. Graas – M. de Kruijff White's position is split. The division of pieces is 5 – 3 – 6: Too few pieces in the centre and many pieces on the edge, which aren't shaped in active formations. 1.48-42 Black does have active formations. He uses them to force a kingshot. The best defence is 1.38-32 18-23 2.41-36 9-13 3.27-22! 3.43-38? 14-20! 4.25x14 19x10 5.30x28 17-21 6.26x17 11x42 B+ 3...17x28 4.32-27 12-18 5.27-21 16x27 6.31x33 8-12 7.43-38 23-28 8.33x22 18x27 9.48-42 12-17 -/+ 1...24-29! 2.34x23 19x28 3.38-32 14-19 4.32x14 9x20 5.25x14 3-9 6.14x3 18-22 7.27x7 11x2 8.3x21 16x49 B+

15) N. Hoekman – H. Seinhorst

95

Black's edge pieces aren't active. White has a strong centre position. he can use the edge pieces for all kind of shots. As a matter of fact white can force the win of at least a piece. 1.34-29! 24-30 1...14-20 2.27-21 26x17 3.28-22 17x28 4.32x25 W+ 1...4-9 2.29x20 14x25 3.27-21 26x17 4.28-22 17x28 5.32x3 W+ 2.35x24 19x30 3.28-23! Introducing all kind of shots.

3...14-20 4.27-21 26x17 5.23-18 12x34 6.37-31 36x27 7.32x1

3...11-16 4.27-21 16x27 5.32x21 26x17 6.29-24 30x28 7.33x2

3...12-17 4.27-21 17-22 5.47-42 26x17 6.37-31 36x27 7.32x1 W+

3...13-18 4.23-19 14x34 5.37-31 26x28 6.33x2 ++/-

The best defence is 3... 26-31 4.47x36 30-35 5.39-34 ++/- 16) Black's right wing is locked. White can use the lock, helped by a crucial shot after 36-31 17-22. 1.36-31! 17-22 1...24-29 2.33x24 18-22 3.27x29 21-27 4.32x12 16-21 5.26x17 11x42 6.12-7 is much too expensive for black. 2.26x17! 24-29 3.33x24 22x42 4.24-20 11x22 5.31-26 22x31 6.26x48 W+

17) R. v.d. Pal – J. Zweerink White has arch-locked black’s right wing. He has no inactive pieces behind the lock. Black’s locked isn’t compensated by a strong centre. Pieces 30 & 35 aren’t active. White can win in two ways.

1) 1.33-28! 23-29 2.34x23 18x29 3.28-23 29x18 4.32-28 (shown by Tjalling van der Bosch after the game) 30-34 5.39x30 25x34 6.50-44 18-22 7.28-23 22-27 8.21x32 17-22 9.23-19 12-18 10.32-27 22x31 11.26x37 etc. W+ 2) The game was 1.50-45 18-22 1...30-35 2.33-28 23-29 3.34x23 18x29 4.39-34 29x40 5.45x34 25-30 6.34x25 35-40 7.25-20 40-44 8.20-14 44-50 9.14-10 50x22 10.10-4 W+ 2.33-29 22-28 3.29x18 28x37 4.18-13 37-42 5.13-8 12x3 6.21x1 42-48 7.16x7 30-35 and now the fastest way to win is the tricky 8.45-40! 35x33 9.7-2 48x30 10.2x35 3-8 11.35x2 33-38 12.1-23 38-43 13.2-16 W+ 18) T. Goedemoed – J. van Dijk

The arrow-lock isn't dangerous for black, since he has space to go to <22>, controlling the wings and introducing some shots. 1...18-22! 2.37-31 2.45-40 12-18 3.21x23 1-6 4.28x17 19x39 5.43x34 24x31 6.26x37 11x22 2.43-39 22-27! A) 3.48-43 Even stronger than an immediate breakthrough with 20-25. 4-10 4.45-40 20-25 5.29x18 12x23 6.21x12 7x18 7.32x21 23x41 8.16x7 1x12 B) 3.35-30 24x35 4.28-23 19x28 5.33x31 13-18 6.32-28 14-19 7.37-32 18-22 8.39-33 20-25 is a positional mess for white! The construction 1/7/11/12/17/22 (6 pieces) keeps 8 white pieces busy ... 9.48-43 3-9 10.43-39 (10.29-23 9-13 11.23x14 12-18 12.21x23 4-10 13.28x6 10x48) 10...19-24 11.29x20 25x14 White is frozen out. 2...12-18 3.21x23 1-6 4.28x17 19x39 5.43x34 24x42 6.48x37 11x22 -/+

Building up

1) A: 38-32 43-38 49-43 2) B: 42-38 44-39 39-33 47-42 3) 45-40 & 40-34, connecting all pieces. 4A) After this move black’s division of pieces isn’t right. The left wing has too many pieces. Piece 5 isn’t developed now. Therefore he should have built up, playing 19-23 at some moment. Black can also choose 18-22x22. B) 8.34-30 with the intention to put a piece on <25> trying to maintain black’s left wing in an undeveloped state. After 8... 20-25 9.37-31 25x34 10.40x18 13x22 11.27x18 8-12 black’s division of pieces stayed imperfect.

5) White connected all pieces, without making a decision (where to go on the 26-30 squares).

The entire game was:

96

Baliakin – Tereshko 1.32-28 17-22 2.28x17 12x21 3.31-26 7-12 4.26x17 12x21 5.36-31 1-7 6.31-27 21x32

7.38x27 18-23 8.34-30 20-25 9.37-31 25x34 10.40x18 13x22 11.27x18 8-12 12.45-40

12x23 13.40-34 9-13 14.41-37 7-12 15.43-38 4-9 16.37-32 15-20 17.46-41 2-8 18.41-37

10-15 19.49-43 5-10 20.47-41 13-18 21.41-36 9-13 22.31-27 12-17 23.34-30 20-25 24.37-31

25x34 25.39x30 15-20 26.30-25 20-24

27.33-28 17-22 28.28x17 11x22 29.31-26 22x31 30.36x27

White controls both wings.

30... 8-12 31.44-39 12-17 32.39-33 17-22 33.33-28 22x31 34.26x37 24-29 35.37-31 6-11 36.31-27 10-15

37.42-37 3-8 38.37-31

Black breaks free at his left wing, but white has a much better wing attack, since his own defence is better with a strong defender on <50>.

38... 14-20 39.25x14 19x10 40.28x19 13x24 41.32-28 29-34 42.28-22 8-13 43.31-26 24-29 44.38-32 10-14 45.26-21 15-20 46.32-28 20-24

47.43-38 34-39 48.28-23 29-34 49.23x12 11-17 50.22x11 16x18 51.21-17 14-19

52.17-11 24-30 53.35x24 19x30 54.38-33 39x28 55.11-7 34-39 56.7-1 Black resigned.

Choose your plan

A. Andreiko – G. Zorn 1.32-28 18-23 2.33-29 23x32 3.37x28 19-24 4.38-33 14-19 5.41-37 12-18 6.37-32 7-12

7.46-41 20-25 8.29x20 25x14 9.41-37 19-23 10.28x19 14x23 11.42-38 10-14

1

12.34-29 23x34 13.40x29 This is a standard plan in this kind of positions: White changes to <29> and builds a pyramid. He needn’t fear a semi-fork, since piece <35> will be developed soon.

13... 5-10 14.45-40 1-7 15.40-34 14-19 16.35-30 10-14 17.44-40 18-23

18.29x18 12x23

2

Black took <23>. This piece is now used as a clue for white: he will perform the podkowa surrounding strategy in this game. White needs patience before the real surrounding (going to <29>) starts. 30-24x25 weakens the black centre.

19.30-24 19x30 20.34x25 14-19 21.40-34 15-20 22.25x14 9x20 23.50-44 13-18 24.44-40 7-12

25.40-35 8-13

97

3

26.48-42

A remarkable move, since 47-42 is more central. The intention of 48-42 is that the future piece on <27> is better defended against an attack (47 can still defend the piece). A disadvantage of this move can be that white has difficulties going to <27> if black keeps a piece on <21> because of exchanges starting with 23-28.

26... 20-24 27.34-29 23x34 28.39x30 18-23

4

White builds the arc 30/34/35 that gives control over the right wing.

29.43-39 12-18 30.39-34 17-21 31.33-29 24x33 32.38x29 2-8 33.49-43 4-9 34.43-38 21-26

It was better to defend with 34...21-27 35.31x22 18x27 36.29x18 13x22 37.32x21 16x27 38.34-29 +/- A funny line, in which black is frozen out in a special way, is: 34...21-27 35.31x22 18x27 36.29x18 13x22 37.32x21 16x27 38.34-29 ; 34...9-14 35.38-33 3-9 36.31-27 8-12 37.36-31 21-26 38.33-28 12-17 39.42-38 17-22 40.28x17 11x22 41.30-25 6-11 42.35-30 11-17 43.47-41 17-21 44.38-33 23-28 45.32x12

21x32 46.37x17 26x46 47.12-8 13x2 48.33-28 46x23 49.29x18 W+

5

35.31-27 11-17

Check that after 35... 18-22 36.29x18! white wins with a well-known kingshot! The 48-42 move enabled this shot!

36.38-33 17-22

6

The next move is typical for the podkowa strategy. White takes more space.

37.29-24 22x31 38.36x27 8-12 39.33-29 6-11 40.42-38 3-8

41.27-22 18x27 42.29x7 11x2 43.32x21 16x27 44.24-20 19-23 45.20-15 9-14 46.38-33 13-19

47.30-25 White will break through and win. Black resigned. 7) A. Andreiko – R. Delhom 31-27 fits in white’s plan. 34-29x30 would eliminate the piece on <23> and this piece gives white a clue for his strategy. 8) White should take care that black puts pressure on <27>. After 33-29 17-22 39-33 22x31 36x27 12-17 is played and white needs to change 27-21. It is not good to lose control

98

over <27>, so white patiently plays 30-24x25, weakening black’s centre. Now after 17-22 40-34 22x31 36x27 12-17 isn’t possible (25-20 34-29 39x19 27-21 32x23 W+1)

9) White releases the pressure on <27> while building an active arrow-formation at the right wing.

10) White weakens the black centre again. As the game is becoming classical soon, it is not bad to lose 4 temps. After the exchange = -- 2. 11) 33-29 12-18 43-38 leads to a strong chain-lock, so black has to play 12-17. After the exchange black’s piece on <6> is very weak. It is blocked by the piece on <17> and won’t get active anymore. 12) The right move is 43-38! 25.30-25 is not OK because of 17-22 26.27x29 21-27 27.25x23 27x49 28.29x20 =. 25...20-25 26.34-29 25x34 26...23x34 27.30x39 19-23 28.28x30 25x43 29.38x49 17-22 30.27x18 21-27 31.32x21 16x27 32.49-43 27-32 33.37x28 26-31 costs black too many pieces. 27.29x20 23-29 28.33x13 and white won the endgame. The complete game:

A. Andreiko – R. Delhom Wch 1972

1.33-29 19-24 2.38-33 14-19 3.32-28 20-25 4.29x20 25x14 5.37-32 19-23 6.28x19 14x23 7.43-38 10-14 8.49-43 13-19 9.41-37 8-13 10.46-41 2-8 11.32-28 23x32 12.37x28 5-10 13.41-37 17-21 14.37-32 21-26 15.42-37 18-23 16.34-29 23x34 17.40x29 19-23 18.29x18 12x23 19.28x19 14x23 20.47-42 7-12 21.45-40 12-18 22.40-34 1-7 23.31-27 7-12 24.35-30 10-14 25.50-45 14-19 26.45-40 11-17 27.30-24 19x30 28.34x25 9-14 29.40-34 14-19 30.34-29 23x34 31.39x30 17-21 32.44-40 18-23 33.40-35 4-9 34.30-24 19x30 35.25x34 9-14 36.33-28 14-19 37.38-33 3-9 38.33-29 12-17 39.29x18 13x31 40.36x27 9-14 41.42-38 8-13 42.38-33 13-18 43.43-39 18-23 44.34-30 15-20 45.39-34 20-24 46.48-43 14-20 47.43-38 20-25 48.34-29 25x34 49.29x20 23-29 50.33x13 34-39 51.13-9 39-44 52.9-4 44-50 53.38-33 50-45 54.20-15 45-1 55.15-10 (2-0)

Centre play

1) M. Deslauriers – I. Kuperman Wch match 1958

Kuperman wanted to break the classical structure, the strategy of centre play. Therefore he puts pressure on <27>. 7... 17-22 8.28x17 11x31 9.36x27 12-17. The rest of the game was: 7... 17-22 8.28x17 11x31 9.36x27 12-17 10.46-41 7-11 11.44-39 8-12 12.49-44 17-22 13.41-36 22x31 14.36x27 12-17 15.33-28 17-22 16.28x17 11x31 17.37x26 2-8 18.39-33 8-12 19.42-37 6-11 20.44-39 1-6 21.47-41 12-17 22.48-42 17-22 23.32-28 23x32 24.37x17 11x22 25.50-44 6-11 26.34-29 19-24 27.40-34 13-19 28.34-30 20-25 29.29x20 25x34 30.39x30 14x34 31.44-39 19-23 32.39x30 15-20 33.45-40 11-17 34.42-37 20-25 35.40-34 23-28 36.43-39 3-8 37.41-36 16-21 38.36-31 21-27 39.37-32 28x37 40.31x42 18-23 41.30-24 8-13 42.42-37 23-28 43.34-29 13-19 44.24x13 9x18 45.26-21 17x26 46.38-32 27x38 47.33x42 22-27 48.42-38 18-22 49.29-24 27-31 (0-2)

2) H. Wiersma – P. Bergsma Wiersma played 45-40, voluntarily giving up the Olympic formation, keeping the piece on <44>. 1.44-40 14-19 2.34-29 doesn’t work anyway because of the coup Philippe with 18-23! and black makes a big exchange. After 1.45-40 14-19 2.34-29 10-14 3.29x20 15x24 4.40-34 black can’t defend piece <23> with 18-23 because of 33-29 (due to piece <44>!). The complete game:

H. Wiersma – P. Bergsma 1970

1.33-29 17-21 2.32-28 21-26 3.39-33 11-17 4.44-39 17-21 5.50-44 7-11 6.37-32 26x37 7.42x31 21-26 8.47-42 26x37 9.42x31 11-17 10.41-37 6-11 11.46-41 1-6 12.48-42 20-24 13.29x20 15x24 14.31-27 10-15 15.36-31 17-21 16.41-36 21-26 17.34-29 5-10 18.29x20 15x24 19.40-34 10-15 20.44-40 14-20 21.49-44 4-10 22.34-29 20-25 23.29x20 25x14 24.40-34 19-24 25.45-40 14-19 26.34-29 10-14 27.29x20 14x25 28.40-34 19-24 29.34-29 11-17 30.29x20 25x14 31.27-21 16x27 32.31x11 6x17 33.36-31 2-7 34.33-29 14-20 35.38-33 20-25 36.39-34 7-11 37.31-27 11-16 38.29-24 17-22 39.28x17 12x21 40.33-28 8-12 41.44-39 12-17 42.24-19 13x24 43.34-30 25x34 44.39x19 9-14 45.19x10 15x4 46.42-38 4-9 47.35-30 9-13 48.30-24 3-9 49.38-33 18-22 50.27x18 13x22 51.43-38 22-27 52.28-23 27-31 53.23-18 31x42 54.38x47 9-14 55.33-28 26-31 56.18-13 14-19 57.24-20 19x8 58.20-14 8-13 59.14-10 13-19 60.10-4 31-36 61.4-22 19-24 62.22x6 21-27 63.32x21 16x27 64.6-17 24-30 65.17-12 30-35 66.12-23 27-31 67.28-22 (2-0)

99

3) Y. Anikeev – T. Burgerhout A) 48-43 prepares the attack on <24>. 48-43 instead of 49-43 gives white more power at his right wing to win the initiative on this flank. B) If white fails to break the classical structure, he is left with non-active pieces on <36 & 42>.

The complete game:

Y. Anikeev - T. Burgerhout 1.34-29 23x34 2.40x20 15x24 3.39-34 5-10 4.43-39 12-18 5.31-27 8-12 6.44-40 18-23 7.48-43 10-15 8.34-29 23x34 9.40x20 15x24 10.39-34 12-18 11.34-29 2-8 12.29x20 14x25 13.43-39 19-24 14.39-34 4-10 15.49-44 9-14 16.44-40 14-19 17.34-30 25x34 18.40x20 10-15 19.20-14 19x10 20.33-29 10-14 21.35-30 11-17 22.28-23 8-12 23.30-24 6-11 24.32-28 3-9 25.38-32 1-7 26.27-21 11-16 27.42-38 16x27 28.32x21 14-20 29.45-40 20-25 30.38-33 9-14 31.40-34 14-20 32.36-31

4) Cai Zhong - Qiu Hao Chun 1 ...23-29! 1...12-17 2.31-27 22x31 3.36x27 17-22 4.34-30 22x31 5.33-28 23x32 6.38x36 and white can still defend. 1...24-30 2.35x24 19x30 3.33-29 is also defendable. 2.34x23 19x28 3.31-27 3.42-37 11-17 4.31-26 28-32 B+ 3.31-26 28-32 4.38x27 22x31 5.36x27 14-20 6.25x14 13-19 7.14x23 18x47 B+ 3...22x31 4.36x27 28-32 5.27-21 11-16 6.38x27 14-20 7.25x14 13-19 8.14x23 18x47

5) W. van der Kooij - G. Jansen A) Black has a centre position with strong formation. After 30-25 9-14 black’s cannon is very strong. White can’t get control over <27>.

B) 1.30-25? 1) 1.31-27? 17-22 2.39-34 2.30-25 22x31 3.25x14 9x20 4.32-28 23x32 5.38x36 24-30 6.35x24 20x49 B+ 2...22x31 3.32-28 23x32 4.38x36 18-23! 5.36-31 9-14 6.43-38 3-8 7.31-26 8-12 8.38-32 24-

29 9.33x24 20x29 10.30-25 23-28 11.32x23 29x18 All white's pieces are on the edge of the board an black will break through soon. 2) 1.31-26 18-22 2.1) Changing with 2.32-28 23x32 3.38x18 13x22 is bad, since black takes all strategic squares: 4.30-25 (4.43-38 20-25 5.39-34 3-8 6.38-32 9-13 7.32-27 22x31 8.26x37 13-18 and the right wing lock is lethal) 4...19-23 5.25x14 9x20 6.43-38 22-27 7.40-34 20-25 B+ 2.2) 2.32-27 22x31 3.26x37 17-22 4.37-32 24-29 5.33x24 20x29 6.39-33 9-14 7.33x24 14-20 8.30-25 20x29 9.40-34 29x40 10.45x34 3-9 11.34-29! 11.43-39 9-14 12.34-30; 11.35-30 22-28 12.32-27 28-33 13.38x18 13x31 B+ 11...23x34 12.35-30 and white escapes. 1...9-14 Black's cannon is very strong. 2.31-26 2.32-27 17-22 3.38-32 24-29 4.33x24 20x29 5.31-26 22x31 6.26x37 -/+ 2...17-22 3.32-28 23x32 4.38x27 22x31 5.26x37 18-22! Black forces the win. The game was 5...19-23 and black also won. 6.37-32 6.43-38 22-27 7.33-28 13-18 8.28-22 27-31 9.37x26 18x27 10.39-33 19-23 11.40-34 24-29 12.33x24 20x40 13.45x34 23-28 6...19-23 7.43-38 13-19 B+ 6) White should build the power block in order to put pressure on <24>. Some lines that show this strategy: 1.39-34 10-15 2.43-39 12-18 3.30-25 4-9 3...11-17 4.34-30 17-21 5.31-27 4-9 6.39-34 8-12 7.34-29 23x34 8.40x20 15x24 9.27-22 18x27 10.37-31 26x37 11.42x22 21-26 12.45-40 6-11 13.28-23 19x37 14.30x6 26-31 15.36x27 37-41 16.40-34 +/- 4.34-30 8-12 5.39-34 11-17 5...23-29 6.34x23 18x29 7.28-23 19x39 8.30x17 11x22 9.40-34 39x30 10.35x33 W+ 6.31-27 6-11 7.34-29 23x34 8.40x20 15x24 9.27-22 18x27 10.32x21 16x27 11.37-31 26x37 12.42x22 1-6 13.45-40 ++/-

D. van Schaik - K. Thijssen Prague 2012

1.32-28 20-25 2.31-27 19-23 3.28x19 14x23 4.38-32 10-14 5.33-28 5-10 6.28x19 14x23 7.39-33 10-14 8.44-39 13-19 9.43-38 8-13 10.49-43 2-8 11.37-31 14-20 12.41-37 9-14

13.46-41

100

As usual in the Russian bear (the opening 1.32-28 20-25) black takes both <23 & 25>. Because of black’s strong centre white can’t take advantage of the edge piece. Black is going to fight for more space in the centre now.

13... 17-22 14.31-26 22x31 15.36x27 4-9 16.41-36 11-17 17.47-41 6-11 18.50-44 1-6

19.33-28

After 20-24 white must change. 20.36-31? would be met by 24-29! with the 29-33 17-21 threat. Black captures 14x25 in order to keep wing control!

19... 20-24 20.34-30 25x34 21.40x20 14x25 22.38-33 9-14 23.36-31 3-9 24.41-36

Black goes to <22>, taking mores space in the centre. After white changes back, black gets space at the other wing!

24...17-22 25.28x17 11x22 26.33-28 22x33

27.39x28 14-20 28.43-38

28... 25-30! 29.35x24 20x29! Black uses the space at white’s right wing for a counter-attack. The strategy is funded on two pillars:

Freezing out the opponent

Breaking through

30.27-22 18x27 31.31x22 9-14 32.48-43 14-20 33.44-40 20-24 34.43-39

34... 16-21 35.26x17 12x21

The piece on <21> is very annoying for white. He can hardly play on this wing anymore. Black now has both wings under control.

36.40-35 15-20 37.39-34 29x40 38.35x44

101

38... 8-12! After 38...23-29 39.36-31 21-26 40.31-27 black can't maintain the dangling piece on <42>, since 6-11? is punished by 41.27-21! 26x17 42.28-23 29x27 43.32x1 W+. After 8-12! white can't play at his left wing.

39.45-40 23-29!

40.40-35

Black has a winning position. Piece <42> remained inactive during the entire middle game! 40.22-17 is met by 29-34! B+ 40.36-31 7-11 41.31-26 41.31-27 21-26 42.40-35 12-18 43.44-40 20-25 44.40-34 29x40 45.35x44 24-29 46.44-40 25-30 B+ 41...12-17 42.40-35 20-25 43.44-39 25-30 44.37-31 and black can perform a cool shot: 44... 30-34! 45.39x30 29-33! 46.38x20 19-23 47.28x8 17x48 48.26x17 48x37 B+ 40.37-31 7-11 41.31-26 12-18 42.26x17 18x27 43.32x21 11x33 44.21-17 24-30 45.17-12 6-11 46.36-31 30-34 B+

40...7-11 41.36-31 21-26

41...21-27 is also good: 42.32x21 11-17 43.22x11 6x26 44.31-27 29-34 with a winning breakthrough.

42.32-27 42.31-27 12-18 43.44-40 20-25 44.40-34 29x40 45.35x44 24-29 46.44-39

42...29-34 43.38-32 12-18 44.42-38 34-40 45.44-39 40-45 46.38-33 45-50 47.22-17

11x22 48.28x17 20-25

Or 48...50-45! 49.33-28 20-25 50.17-11 6x17 51.28-22 17x28 52.32x14 45-23 B+

49.17-11 49.17-12 18x7 50.39-34 50x17 51.34-29 24x33 52.32-28 33x22 53.27x9 19-23 also loses.

49...6x17 50.39-34 50x22 51.27-21 22x36

52.21x14 13-19 53.14x23 36-9 54.32-28 9-4 55.35-30 24x35 56.23-19 4-31 57.37-32 31-9

58.28-23 26-31 59.34-29 31-36 60.29-24 25-30 61.32-27 9x31 62.24-20 36-41 63.20-15 31-4 64.23-18 4x22 65.15-10 22-4 66.10-5 41-47

(0-2) T. Sijbrands – H. van Klaveren A) White builds the 27/31/36 tail, which helps the centre play. The arrow-lock black takes is only temporary, since white can either go to <22> or break open the classical structure as happens in the game. B) 19...12-18 would probably be met by 20.27-22 18x27 21.31x22 13-18 22.22x13 9x18 23.36-31 8-13 24.31-27 4-9 25.50-45 5-10 26.44-40 10-15 and white can play a Ghestem-lock with 27.28-22. C) The semi-fork isn’t dangerous without a white piece on <35>. Moreover, white’s centre is too strong for being surrounded. D) 40...12-18 41.28-23! 19x17 42.30x19 13x24 43.37-31 26x28 44.33x4 W+ E) 42...9-14 43.32-28! 14-20 44.22-18! 13x22 45.28x17 21x12 46.30-25 8-13 47.25x23 13-18 48.35-30! 24x35 49.23-19 etc. W+ P. Roozenburg – B. Wiggers A) White develops his left wing, taking 4 temps. He doesn’t want to play a closed classical game, but he wants to attack! The game shows a nice strategy for white, the left-wing-attack. B) 14.34-29 23x34 15.40x29 20-25 16.29x20 15x24 17.27-21 16x27 18.32x21

C) White takes more space. Black has to close <13>, since changing back with 9-14 is impossible. Black’s centre is being surrounded and he risks being frozen out. White D) White removes piece <24> in order to control both wings. E) 42.22-17 7-11

102

42...7-12 43.17x8 13x2 44.21-17 14-20 45.48-43 20-24 46.28-22 W+ 43.28-22 11-16 44.48-43 14-20 45.39-33 20-24 46.43-39 and black has no sensible moves left:

24-30 is met by 17-12 18x7 33-29 W+

After 24-29 33x24 19x30 50-44 black is frozen out. 23-29 34x12 30-34 39x30 25x34 12-7 34-40 44-39 is completely lost for black.

P. Hoogteijling – M. Dolfing A) In this game white gets the initiative at the right flank, but since there is no piece on <15>, he has no piece to aim his formations at. Playing without <15> is much more economic, since the piece doesn’t contribute to the attack. White will reach <15> himself, but because of black’s strong defence, this is a dead end for white. Four-times world champion Anatoli Gantwarg called this strategy ice and bite. In this case white is given ice while he has nothing to bite on. B) 45.33-29 22-28 46.20-15 27-32 47.24-20 32x41 48.47x36 3-8 49.30-24 8-13 B+

Playing against a weak left wing J. Krajenbrink – B. Ramdien A) A piece on <39> has a clear function in white’s strategy. It helps white to go to <22> attacking on the left flank. After 1...18-23 2.32-27 9-13 3.27-22 17x28 4.33x22 12-18 5.45-40 18x27 6.31x22 would follow. In the game white also goes to <22>. B) While black is struggling to develop his left wing, white attacks on the other wing. White has two major plans, freezing the opponent out or breaking through at the left flank. C) 11.39-34 is also very strong.

After 11...12-18 12.34-30 18x27 13.31x22 8-12 14.36-31 12-18 15.31-27 black is frozen out.

After 11... 14-20 12.25x14 19x10 13.31-26 10-14 14.22-17 12x21 15.26x17 white breaks through.

Classics

True or false 1) False. M. Kemperman – T. Berends 1.48-43! The golden piece is engaged in the battle. White doesn't want to change 37-31x31,

so he takes care his right wing is as strong as possible. 1... 4-9 2.28-22! 9-14 3.33-28 3-9 4.43-38 5-10 Now white forces a win! 5.39-33 12-18 6.33-29! 24x33 7.38x29 20-24 8.29x20 14x25 9.37-31 26x48 10.40-35 48x30 11.35x24 19x30 12.28x8 W+

2) False G. Zalitis – V. Stasytis 1.28-22 Also 1.41-37 9-13 2.28-22 16-21 3.27x16 18x27 4.32x21 26x17 5.38-32 13-18 6.37-31 clearly shows that black's wing control fails in this case. 1...9-14 1...9-13 2.22-17 etc. W+ 2.22x13 19x8 3.33-28 14-19 4.38-33 8-12 5.41-37 12-17 6.28-22 17x28 7.33x22 W+

3) False E. Budé – J. Krajenbrink 1...3-9 2.47-41 White can't change 34-29x39 anymore. When trailing in development (T=-3), a piece on <10 or 15> often is a strong defender. If white plays with piece 47 black can make a kingshot. Therefore black has a very good position. 2... 17-22 3.28x26 23-29 4.34x12 13-18 5.12x23 19x46 6.30x19 14x23 7.26-21 4) True S. Buurke – E. Boezjinski 1...17-21 White is frozen out, because of his dangling piece. he can't change at his right wing. 2.42-37 12-17 3.43-39 8-12 4.28-22 17x28 5.33x22 12-17 6.38-33 17x28 7.33x22 21-26 8.39-33 11-17 9.22x11 16x7 10.33-28 7-11 11.28-22 15-20 B+

5) True W. Virny – R. Cardozo 1.49-43 17-21 2.30-25 and black can't play the necessary 12-17 (in order to change back 17-22x12) and gets a dangling piece after 7-11. 6) True R. Keller - W. Rustenburg 1.39-34 7-12 2.34-30 12-17 3.43-39 4-9 4.30-25 9-14 4...21-26 5.25x14 9x20 6.27-21 16x27 7.32x12 23x34 8.12x25 24-30 9.35x24 26-31 10.40x29 31-37 ++/- 5.39-34 3-8 6.34-29 23x34 7.40x29 8-12 8.48-42 21-26 9.42-37 17-21 10.45-40 12-17 11.40-34 17-22 12.28x17 21x12 13.32-28 12-17 14.38-32 W+ 7) H. Boers - E. Lere

103

1.42-37! White is trailing 2 temps (= -- 2) while black has an inactive piece at <15>. White can use the Olympic formations (Coup Royal!). So white is much better, he even has a winning position. 1... 15-20 1...21-26 2.27-22 18x27 3.32x21 23x34 4.40x7 16x27 W+ 2.39-34 21-26 3.34-29 23x34 4.40x29 17-21 5.45-40 12-17 6.40-34 17-22 7.28x17 21x12 8.34-30 8) True P. Oudshoorn - T. Brouwers 1...18-23 2.37-32 10-14 3.42-37 14-20 4.39-34 12-17 5.48-43 8-12 6.40-35 20-25 White is in trouble because of black's wing-control. 7.43-38 17-21 8.27-22 12-17 9.22x11 16x7 10.28-22 7-11 11.33-28 24-29 12.22-18 29x40 13.35x44 23x12 14.28-23 19x28 15.32x23 21-27 Black won.

9) J. Krajenbrink – A. de Hoon 1... 4-9? 1...4-10! is better, since it is protecting <24>! For example: 2.38-33 12-18 3.31-27 7-12 4.28-22 10-15 5.22x13 19x8 = 2.38-33 12-18 3.31-27 9-13 4.34-29! White breaks open the classical position and takes all strategic squares! 23x34 5.40x20 25x14 6.33-29 7-12 7.45-40 2-7 8.40-35 7-11 9.29-24 19x30 10.35x24 White won. 10) Position after 1...12-17! of A. Bulatov – A. Baliakin Black has wing control, therefore white risks being frozen out. Black is much better. 2.40-35 17-21 3.39-34 14-20 4.25x14 9x20 5.44-39 20-25

Black’s wing-control is clear! White’s position is lost. 6.28-22 6.27-22 11-17 7.22x11 16x7 8.28-22 7-11 9.35-30 24x35 10.33-29 35-40 11.29x18 40x29 12.18-12 25-30 13.39-33 13.22-17 11x22 14.12-7 29-33 15.39x17 21x1)

13...21-27 14.33x35 27x7 B+ 6...3-9? 6...24-30! 7.35x13 23-28 8.32x23 21x41 9.22-18 41-46 10.33-28 26-31 11.38-32 46-41 12.34-29 41-47! 13.39-33 31-36 14.23-19 25-30 15.29-23 47x24 16.19-14 24x2 17.14-10 36-41 18.10-5 41-47 B+ 7.33-28 24-29 8.39-33 29x40 9.35x44 9-14 10.44-39 14-20 11.39-34 11.33-29! 23x43 12.38x49 20-24 13.22-18 11-17 14.27-22 24-30 15.22x11 16x7 16.28-23 19x28 17.32x23 = 11...20-24 12.22-18 23x12 13.34-29 12-18 14.29x20 25x14 15.33-29 11-17 16.27-22 18x27 17.28-23 19x28 18.32x23 27-31 19.29-24 31x33 20.24-19 14-20 21.19-13 33-39 22.13-9 39-43 23.9-4 43-48 24.4-15 48-37 25.15x6 37x19 B+ 11) R. Heusdens – T. Goedemoed 1...11-17! After 1...1-6? 2.47-42 11-17 3.31-26 17-21 4.26x17 12x21 5.36-31 21-26 6.40-35 26x37 7.42x31 black loses control over his right wing. Therefore piece 1 should stay on its spot so that it can be played to <7> defending a piece on <21>. 2.31-26 17-21 3.26x17 12x21 4.36-31 1-7

12) Sacrifices are crucial in late classical positions. White saves the game by a triple sacrifice followed by an attack on <19>. 1.27-21! 1.27-22? 18x27 2.32x12 23x43 3.12-8 14-20 4.25x34 43-48 5.30x19 48x2 B+ 1...17x26 2.38-33 29x27 3.28-22 24-29 4.22x33 26-31 5.30-24 14-19 6.24x13 23-28 7.33x22 27x9 8.25-20 31-37 9.20-15 9-14 10.35-30 37-41 11.30-24 41-46 12.24-19 14x23 13.15-10 = 13) This is a well-known theoretical position. Getting rid of <24> is worth sacrificing a piece. 1.35-30! 1.28-22? 17x28 2.33x22 23-28 -/+ 1...24x44 2.39x50 17-22? Black should defend playing 2...25-30! 3.34x25 23-29 4.33x24 19x30 5.25x34 13-19 6.50-45 19-23 7.28x19 17-22= 3.28x17 21x12 4.33-28 with a winning position for white, for example 16-21 5.27x16 12-17 6.28-22 17x28 7.34-29 23x34 8.32x14 W+

14) True W. Koppejan – M. Provoost 1...23-29! 2.34x23 18x29 White can’t change back 34-29x39 anymore. Now the battle is about control over the left flank. 3.37-31 26x37 4.42x31 21-26 5.48-43 26x37 6.32x41 12-18 7.41-37 18-23 8.37-32 11-17 9.36-31 13-18 10.43-39

104

10.31-26 18-22 11.27x18 23x12 12.43-39 16-21 B+ 10...8-12 11.31-26 29-34 12.26-21 34x43 13.38x49 17x26 B+ 15) True H. Sanirsad – I. Koeperman 1...24-29! 2.42-37 White can change 40-34 because of a Kung Fu shot with 14-20. 2... 11-16 3.37-31 17-22 4.28x17 12x21 5.26x17 29-33 6.38x29 23x45 B+

16) T. Sijbrands – S. Buurke 1.27-22! 20-24 2.43-39 16-21 3.40-35 23-29 4.22-18 13x22 5.28x17 21x12 6.35-30 24x35 7.33x2 W+ 17) T. Goedemoed – B. Post Black's right wing isn't positioned well. Instead of making the Olympic with 1-6 he has played 1-7? Black also has a gap in his centre. White uses these weaknesses by making the position closed classical and then going to <22>. 1.31-27! 3-9 2.33-28 9-13 3.27-22 12-17 3...12-18 4.39-33 18x27 5.33-29 13-18 5...7-12 6.29x7 11x2 7.37-31 26x37 8.42x22 W+ 6.37-31 26x37 7.42x24 W+ 3...20-24 4.22-17 11x44 5.43-39 44x33 6.38x29 W+ 3...20-25 4.39-33 W+ 4.39-33 23-29 5.34x23 7-12 6.35-30 20-25 7.33-29 25x34 8.29x40 and white won. 18) J. Sterel – J.M. Drent = - 4, while there are no other aspects compensating this. Both players have no weak pieces. So the position favours white.

19) J. Krajenbrink – T. de Haas = - 1, which is a small difference. Black has an inactive piece on <15>, so the position is better for white. 20) J. Koopman – E. Van Hattem = - 13, but black can break open the position. Therefore the position is only slightly better for white. 1...11-17! Black doesn't have to fear the kingshot with 28-22, since it yields no more than a draw for white. In the game 1... 24-30? was played: 2.38-33 30x39 3.43x34 11-17 4.42-38 W+ 2.38-33 2.28-22 17x28 3.34-29 24x33 4.38x29 23x34 5.32x3 21x41 6.40x29 41-46 =

2...24-29 3.33x24 19x39 4.43x34 17-22 5.28x17 21x12 6.42-38 23-29 7.34x23 18x29 = 21) E. Bedinovs – J. Krajenbrink = - 7. White has an inactive piece on <36> Crucial is that black can play against white’s left wing. His arc 16/21/26 holds the left wing while at the other wing he can expand with 24-30x30x24. The game was:

E. Bedinovs – J. Krajenbrink 1995 1.32-28 17-22 2.28x17 11x22 3.37-32 12-17 4.41-37 6-11 5.46-41 7-12 6.34-29 19-23 7.40-34 14-19 8.32-28 23x32 9.37x28 10-14 10.41-37 5-10 11.37-32 19-23 12.28x19 14x23 13.32-28 23x32 14.38x27 17-21 15.29-23 18x38 16.27x7 1x12 17.43x32 11-17 18.49-43 21-26 19.42-37 10-14 20.47-42 17-21 21.43-38 14-19 22.39-33 12-18 23.31-27 9-14 24.33-28 8-12 25.44-39 4-9 26.45-40 2-8 27.50-45 20-24 28.34-30 14-20 29.30-25 18-23 30.25x14 9x20 31.40-34 20-25 32.48-43 This is the position of the exercise. 32... 12-18 taking care white can’t escape via <22>. 33.38-33 33.34-30 25x34 34.39x30 15-20 35.30-25 24-29 36.25x14 19x10 37.28x19 13x24 gives black also the opportunity to play against <36>. 33...24-30! 34.35x24 19x30 35.28x19 13x24 36.45-40 30-35 37.42-38 35x44 38.39x50 8-13 39.33-28 3-9 40.38-33 9-14 41.43-39 14-19 42.50-44 24-30 43.33-29 19-24 44.29x20 15x24 45.44-40 30-35 46.28-23 35x33 47.23x12 13-18 48.12x23 24-29 49.37-31 26x19 50.34x14 21x32 51.36-31! 33-39 52.14-9 39-44 53.9-3? 32-38 54.31-27 44-50 55.3-9 50-17 56.9-3 17-26? 57.27-22 26-31 58.22-17 31-13 59.3-12 38-43 60.12-23 and white had escaped narrowly. 22) White has a better position. The game was:

J. Krajenbrink – J. Goudt 1.32-28 18-23 2.38-32 12-18 3.42-38 7-12 4.47-42 1-7 5.31-27 17-21 6.33-29! 20-24? 6...21-26 7.39-33 11-17 looks better. Now white’s pan succeeds. Black’s right wing isn’t poisoned well. He has to play 11-17 once. 7.29x20 15x24 8.37-31! 10-15 9.39-33 14-20 10.44-39 21-26 11.41-37! 4-10 12.34-30 20-25 13.49-44 25x34 14.40x20 15x24 15.44-40 10-14 16.40-34 5-10 17.34-30 White is better. Black has to allow that his right wing is weakened after playing 11-17. 17... 11-17 18.27-22 18x27 19.31x11 6x17 20.36-31 17-21 21.31-27 12-18

105

Black built the arrow 16/21/26. With the Ghestem-lock white isolates these pieces. 22.28-22! 10-15 23.33-28 14-20 24.38-33 24-29 25.33x24 20x29 26.39-34 29x40 27.45x34 9-14 28.43-39 14-20 29.42-38 20-24 30.39-33 3-9 31.48-42 9-14 32.46-41 14-20

33.33-29 24x33 34.28x39 7-12 35.41-36! 20-25 36.30-24! 19x30 37.35x24 2-7 38.24-19! 23x14 39.22-17 14-19 40.39-33 18-23 41.33-28 12-18 42.17-11 7-12 43.11-6 W+

23) 1.34-30! After 1.31-26? white loses control over the left wing: if black sacrifices 16-21, white can’t go to <27> anymore. Therefore it is better to keep the piece at <31>! 1.31-26 3-9 2.34-30 25x34 3.40x20 15x24 4.45-40 9-14 5.40-34 14-20 6.34-30 20-25 7.39-34 16-21! 8.27x7 12x1 is better for black. 1...25x34 2.40x20 15x24 3.45-40 3-9 4.40-34 9-14 5.34-30 23-29 5...17-21 6.31-26 11-17 7.28-22 17x37 8.26x8 13x2 9.38-32 37x28 10.33x13 19x8 11.30x10 W+ 6.30-25 17-21 6...29-34 7.39x30 18-23 8.31-26 13-18 9.43-39 23-29 10.39-34 29x40 11.35x44 24x35 12.33-29 W+ 7.31-26 11-17 7...12-17 8.39-34 29x40 9.35x44 18-23 10.43-39 13-18 11.44-40 W+ 8.28-22 17x37 9.26x8 13x2 10.27-21 16x27 11.35-30 24x35 12.33x42 35-40 13.39-34 40x29 14.43-39 W+ 24) It seems that black is better, since he controls both wings, but white turns around the odds with a surprising double sacrifice! 1.28-22 9-14 2.33-28 12-18 3.39-33 14-20 4.22-17!! 11x42 5.38x47 +/-

25) T. Goedemoed – E. Dollekamp 4.47-41! 4.45-40? is too slow. Black uses a sacrifice to solve his problems: 4... 7-11 5.47-41 11-17! 6.22x11 16x7 7.27x16 12-17 8.41-36 13-18.

4...7-11 5.41-36 etc. And now the sacrifice doesn’t work and black is frozen out. 26) 1.40-35? leads to the famous position Ricou – Garoute. Black wins by 1...24-29! 2.33x24 17-22 3.28x17 21x12 as shown in ACID part 2. 1.30-25! is winning however! 1... 24-30 is met by 2.33-29! 30x39 3.40-34! 39x30 4.25x34 etc. W+

M. Shabshai – A. Georgiev EU-ch1995

1.32-28 19-23 2.28x19 14x23 3.33-28 23x32 4.37x28 10-14 5.39-33 14-19 6.41-37 5-10

7.44-39 9-14 8.46-41

8... 19-23 9.28x19 14x23 10.50-44 10-14 11.37-32 13-19 12.41-37 8-13 13.34-29 23x34

14.39x30 4-9 15.30-25

15... 18-23 16.44-39 12-18 17.31-27 7-12 18.33-28 2-8 19.39-33

106

19... 17-21 20.35-30 20-24 21.40-35 21-26 22.37-31 26x37 23.42x31

23... 11-17 24.47-42 17-21 25.49-44

25... 23-29 26.44-40 18-23 27.40-34 29x40 28.45x34

24-29 29.33x24 14-20 30.25x14 9x40 31.35x44 15-20 32.43-39 1-7 33.39-34 7-11

34.44-40 20-24 35.40-35

35... 24-29 36.30-25 29x40 37.35x44

37... 23-29 38.44-40 3-9 39.48-43

39... 12-18

39...21-26? 40.43-39! 26x48 41.39-34 48x30 42.25x3 W+

40.27-22 18x27 41.31x22 21-26 42.40-35

107

42... 11-17 43.22x11 6x17 44.42-37

44... 19-23 45.28x19 13x24 46.32-28 29-34 47.38-32 8-12 48.37-31 26x37 49.32x41 12-18

50.41-37 9-14 51.36-31

51... 18-22 52.28-23 17-21 53.31-26 21-27 54.26-21 27-31 55.37x26 16x27

56.35-30 24x35 57.23-19 14x23 58.25-20 34-40 59.20-14 40-45 60.14-9 45-50 61.9-4 23-29

62.4-13 29-34 63.13-2 27-32 64.2-11 22-27 65.11-16

65... 34-40 66.16-2 32-37 67.2-19 37-42 68.19-23 40-45 69.23-14 42-47 0-2 (2.59/2.22)

Calculation

C. van Leeuwen – R. Heusdens

G. Vink - M. Kruyswijk

108

Wing control

1) D. Kootstra – S. Buurke A) White breaks the 34/39/43 tail that is necessary to control the right wing with the 34-30x30 exchange. Moreover, white creates a dangling piece on <42>. B) 12.32-28 23x34 13.33-29 21x41 14.29x7 =

C) 8.34-30 25x34 9.39x30 17-22 10.28x26 23-28 11.32x12 13-18 12.12x23 19x48 13.30x10 48x42 B+ D) 5. ..12-17! 6.44-40 8-12 7.40-35 7.27-22 12-18 8.22x11 16x7 9.37-31 25-30 10.34x25 21-27 B+ 7...12-18 8.28-22 17x28 9.33x22 23-28 10.32x12 21x43 11.39x48 24-29 12.34x23 19x8 B+ E) 7... 14-20! 8.22-17 8.40-35 8-12 9.22-17 12x21 10.33-28 24-29 11.35-30 29x40 12.39-34 40x29 13.30-24 19x30 14.28x8 -/++ 8...8-12 9.17x8 13x2 10.40-35 2-7 11.33-28 18-22 12.27x29 24x44 13.37-31 26x48 14.28-22 48x30 15.35x13 -/++ 2) J. van Kesteren – O. Dijkstra White could have forced a win: 1.34-30 4-9

1...20-25 is met by 2.27-21! 25x43 3.21x14 43-49 4.26-21 16x27 5.31x22 49x40 6.35x44 After 1...18-23 2.30-25 black has no good move left. 2.30-25 9-14 3.48-43 The game was 3.39-34?? 24-29! 4.34x21 11-17 5.21x12 13-18 6.12x23 19x50 B+ 3...18-23 3...17-22 4.26-21 W+ 4.43-38 and black has no sensible move left (13-18 is punished by 35-30 & 27-21).

T. Mbongo – S. Buurke

1.32-28 17-22 2.28x17 12x21 3.33-28 7-12 4.39-33 19-23 5.28x19 14x23 6.44-39 9-14

7.34-30 4-9 8.30-25 1-7 9.40-34 14-19 10.25x14 9x20

11.31-27 21x32 12.38x27 19-24

109

13.34-29 23x34 14.39x19 13x24 15.42-38 10-14 16.37-32 11-17 17.45-40 18-22 18.27x18 12x23 19.41-37 7-12 20.46-41 5-10 21.49-44

3-9 22.47-42 9-13 23.44-39 14-19

24.33-28 13-18 25.36-31 10-14 26.41-36 2-7 27.39-33 7-11 28.43-39 17-22 29.28x17 11x22

30.31-27 22x31 31.36x27 6-11 32.37-31 8-13

33.33-28 11-17 34.31-26 20-25 35.50-45 15-20 36.38-33 25-30 37.42-38

Black resigned, since the only move left is punished by a coup Royal. 37... 20-25 38.27-22! 18x27 39.32x21 23x34 40.40x7 16x27 41.35x13 W+

Playing against a weak left wing

2) R. Boomstra – E. Watoetin A) 36.37-31 26x37 37.42x31

White takes the left wing under control. 37... 3-8 Black should have played 11-17. Now white uses the space on <21>. 38.27-21! White takes more space on the left wing. His arrow 25/30/35 holds the other wing. The wing control should bring about that black is frozen out. B) Black has an inactive piece on <15>. White holds this wing with the arrow 25/30/35. The only way to avoid being frozen out is the defensive changing back 14-20x10. 41... 17-21 is met by 42.28-22 8-13 43.48-42 with a superior position for white. 3) M. Koopmanschap – B. Provoost Black wants to play against white’s left wing (with) an inactive piece on <36>! 17-22x21 is the right move, weakening white’s centre (<28>) and creating the arrow that holds white’s left wing.

The game was: 39... 17-22 40.28x17 12x21 41.43-39 3-9 42.39-34 9-14 43.33-28 24-30 44.38-33 30x39 45.33x44 14-19 46.44-39 19-23 47.28x19 13x24 48.39-33 18-23 49.27-22 25-30 50.33-28 30-35 51.28x30 35x44 52.30-24 44-49 53.22-17 21x12 54.24-19 49x27 55.19-14 27-4 56.36-31 4x36 57.14-10 36-31 58.37-32 31-22 59.10-4 22-6 60.45-40 12-17 61.4-36 17-21 62.40-34 6-1 63.34-30 1-23 (0-2)

Semi-fork 1) M. Linssen - P. Bouma A) White is patient. He considers black’s centre to be too strong to surround already. So he changes back first, waiting for a better moment to start the surrounding strategy.

B) Black goes to <25> in order to lock white’s right wing, but he weakens his centre and actually helps the white strategy of surrounding black’s centre. He could have considered to play the sharp 23-28, although this is quite dangerous too, for example: 32...23-28 33.38-33 17-21 34.42-38 21x32 35.38x27 12-17 36.47-42 7-12 37.29-24 19x30 38.34x25 17-21? 39.42-37! 21x32 40.39-34 28x48 41.37x10 48x26 42.10-5 B+1

C) White wants to surround black’s centre with the podkowa strategy.

110

D) After 36.41-37 (or 42-37) black has no good move left! Even 28-33 37.39x28 4-9 is losing after 38.27-22! 18x27 39.38-32 27x38 40.43x32 9-14 41.29-24 is winning for white. E) 39.29-23 18x40 40.38-33 25x34 41.33x2 etc.

F) 46.28-22! 17x28 47.30-24 19x39 48.38-33 23x34 49.32x3 39x28 50.3-12 34-39 51.12-17 28-33 52.17-26 W+ 2) K. Thijssen – G. Mollink A) Usually white takes forwards when breaking the semi-fork. White switches from semi-fork to a right wing attack. He is going to take an outpost on <24>. If he wants he can go to <27> once again. B) 35.38-32 28x37 36.27-21 16x27 37.29-23 18x29 38.34x23 20x18 39.47-42 13x24 40.42x2 W+ C) White has a very strong centre with pieces on <27., 28, 29, 30>. The arrow 25/30/35 is actively engaged in controlling the right wing. 3) A. Georgiev – H. Veenstra A) White has a fork-lock without a piece on <16> but it is still good, since black is far away from the centre. Candidate moves are 38-32 (wanting a chain lock with 32-28) and 33-29 using the vulnerable <18>, while 14-19 is punished by a kingshot! B) This was a position form the world record simultaneous play. Georgiev didn’t have proper time to calculate. Otherwise he would have found the next forcing: 1.33-29! 2-7 1... 14-19 2.27-21 17x37 3.38-32 37x28 4.29-23 18x29 5.34x5 W+ 2.38-32 4-9 2...6-11 3.29-23 18x29 4.34x23 22-28 5.23-18 28x26 6.27-21 12x23 7.21x1 W+ 3.29-23 18x29 4.27x18 12x23 5.40-35 29x27 6.31x4 W+

Fork-lock

1) A. Boxum – D. Kootstra A) 5 pieces are locking 8 pieces, so the fork-lock is economic. White has enough formations and space to play at the right wing, while black has no strong centre at all. Therefore white’s position is superior! B) 1.33-29! 24x33 2.38x29 9-14

2...13-19 is met by the king shot 3.29-24 19x30 4.27-21 16x27 5.37-32 27x40 6.45x3 W+. 3.37-32 14-19 4.42-37! 19-23 5.44-40 23x34 6.40x29 22-28* 7.32x23 17-21 8.26x17 12x41 9.23x3 41-47 10.3x25 with a winning endgame for white. 2) 1.35-30! 23-29 1...14-20 2.30-25 20-24 3.39-33 23-29 4.49-44 19-23 5.44-40 W+ 1...23-28 2.32x23 19x28 2...18x29 3.27x18 12x23 4.39-33 W+ 3.38-33 14-20 4.30-25 20-24 5.49-44 W+ 2.30-25 19-24 3.39-33 3.49-44? 18-23 4.27x18 17-22 5.18x27 24-30 6.25x34 29x49 B+ 3...14-19 4.49-44 4.33-28 22x33 5.27-22 is also possible. 4...19-23 5.44-40 W+

3) 1.33-29! 1.34-30 4-9 2.49-43 9-14 3.43-39 23-29 4.33x24 22-28 5.32x23 18x20 6.30-24 20x29 7.27-22 17x28 8.26-21 16x27 9.31x24 19x30 10.35x24 with advantage for white, but black can still defend. 1.49-43? 16-21 2.27x16 23-28 3.32x14 13-19 4.14x23 18x40 5.35x44 22-27 6.31x22 17x50 B+ 1.35-30? 23-28 2.32x14 13-19 3.14x23 18x40 4.27x18 12x23 is unclear. 1...4-9 2.35-30 Another good option is 2.49-43 9-14 3.43-39 14-20 4.35-30 20-25 5.27-21! 16x27 6.32x21 with two tricks:

6...11-16 7.38-33 16x27 8.33-28 22x35 9.31x2 W+

6...22-28 7.30-24! 19x30 8.38-33 W+ 2...9-14 3.49-43 23-28 4.32x23 19x28 5.29-24 13-19 6.24x13 18x9 7.27x18 12x23 8.30-24! 9-13 9.43-39 16-21 9...17-22 10.31-27 22x31 11.36x27 7-12 12.38-33 12-17 13.33x22 17x28 14.42-38 13-18 15.38-32 11-17 16.37-31 28x37 17.31x42 23-28 18.34-29 17-22 19.42-38 22x31 20.26x37 16-21 21.38-32 W+ 9...7-12 10.31-27 12-18 11.38-33 17-22 12.26-21 22x31 13.37x26 16x27 14.33x31 W+ 10.34-30 7-12 11.38-32 12-18 12.42-38 11-16 13.30-25 18-22 14.24-20 etc. W+ 4) A. Scholma – T. Brouwers 1) 1.29-24? 8-13 2.24-20 23-29!! Scholma - Brouwers continued 2...16-21? 3.27x16 23-29 4.20x9 29x40 5.35x44 25x43 6.38x49 13x4 7.32-27 4-9 8.42-38 9-14 9.44-39 19-24 10.38-33 14-19 11.49-44 19-23 12.44-40 23-28 13.40-34 28-32 14.27x38 18-23 15.37-32 22-28 16.33x22 17x37 17.31x42 24-29 18.34-30

111

29-34 19.36-31 34x32 20.31-27 32x21 21.26x8 W+ 3.34x23 3.20x9 13x4 4.34x14 25x43 5.38x49 4-9 6.14x3 18-23 7.27x29 12-18 8.3x21 16x47 B+ 3...25x43 4.38x49 4.20x9 13x4 5.38x49 18x29 6.27x18 12x23 B+1 4...14x25 5.23x14 25-30 6.35x24 22-28 7.32x23 18x9 B+ 2) 1.30-24 19x30 2.35x24 8-13 3.24-20 13-19 4.20x9 19-24 5.29x20 25x3 6.34-30 3-9 = 3) 1.27-21! 16x27 2.32x21 is very strong. White has an ideal surrounding strategy! 3.1) 2... 11-16 3.37-32 3.29-24? 16x27 4.24x11 23-29 5.34x23 25x41 6.36x47 18x29 B+ 3...16x27 4.32x21 8-13 5.38-33 6-11 6.21-16 23-28 7.42-38 19-23 8.31-27 22x31 9.36x27 28-32 9...14-19 10.33x22 17x28 11.30-24 19x30 12.35x24 W+ 10.33-28 32x43 11.28x8 12x3 12.39x48 W+ 3.2) 2... 8-13 3.21-16 22-28 4.30-24 19x30 5.35x24 17-22 6.26-21 14-20 7.24x15 25-30 8.34x25 23x41 9.36x47 +/-

M. van Ballegooijen – T. Sijbrands A) By closing the main diagonal with pieces on <14 & 19> black makes the position sharper, as white cannot easily escape from the lock now (as after 49-43 38-32 34-30). We see this move more often in Sijbrands’ fork-lock games.

B) Black can play against the piece on <22> and white’s heavy right wing.

C) 34... 12-18 is met by 35.35-30!! and black has no good move left!

D) White’s division of pieces isn’t balanced. His right wing is overloaded. Piece <28> isn’t backed by a strong centre. E) 38... 8-12 threatening 16-21! B+

Edge pieces K. Thijssen – M. Kloosterziel A) The theoretical line is 17...20-24 18.34-30 15-20 19.30-25 10-15 20.41-37 and now black’s best choice is 20... 17-22 21.37-32 11-17 22.42-37 23-28 23.32x23 19x28 = as in K. Thijssen – B. Winkel 2011. B) Black’s space is severely reduced. He can’t play at his right wing anymore. 18-22 isn’t

possible, since after 39-33 26-21 is a lethal threat. C) After 28...10-15 white takes the right wing under control: 29.34-30 25x34 30.39x30 and black will be frozen out: 23-29 31.32-27 18-23 32.37-32 13-18 33.30-25 29-34 34.43-39 34x43 35.48x39 8-13 36.50-44 23-29 37.27-22 18x27 38.32x21 W+ D) 40...14-19 41.33-29 18-22) 42.38-33 22-27 43.50-45 12-18 44.45-40 7-12 45.16x7 12x1 46.40-34 30-35 47.48-42 1-6 48.34-30 35x24 49.29x20 18-23 50.20-15 23x32 51.15-10 W+ A. Georgiev – R. Boomstra A) After 5.31-26 black changes 19-23 28x19 14x34 and 21-27 32x21 22-28 33x22 18x16. White then has an inactive edge piece on <26>. Black easily builds a strong centre.

B) 26...21-26? 27.28-23 26x39 28.23x5 W+

C) White’s left wing is arrow-locked. He can escape from the lock by changing 33-29x29 but after this his position is a mess. Pieces 35/40/45 are inactive. Piece <29> isn’t positioned well and white’s left wing isn’t strong either. D) 36.38-33 14-20! 37.15x24 19x30 38.35x24 22-27 39.31x22 13-19 40.24x13 9x47 B+

Right wing attack

A. Baliakin – P. Meurs Prague 2012

1.32-28 18-22 2.37-32 12-18 3.34-29 7-12 4.40-34 1-7 5.45-40 19-23 6.28x19 14x23

The intention of the exchanges white makes is to start a right wing attack after black goes to <23> and white changes back 31-26x37 followed by 35-30.

7.32-28 23x32 8.38x27 13-19 9.42-38

112

Black takes the centre again and white prepares the planned right wing attack.

9... 19-23 10.31-26 22x31 11.26x37 10-14

12.35-30 8-13 13.50-45

Black accepts the invitation to play against the attack.

13... 20-25 14.37-32 5-10 15.30-24 3-8 16.47-42

Black built a construction Baliakin himself likes to use. With 17-21 black hopes to get control on his right wing.

16... 17-21! 17.40-35 14-20 18.33-28 9-14 19.28x19 14x23

20.42-37

Black takes over the attack with 21-27x27!

20... 21-27! 21.32x21 16x27 22.38-33 11-17 23.37-31 17-22

24.41-37 6-11 25.46-41

Black puts another outpost in the centre. His attack is slowly getting stronger.

25... 23-28! 26.43-38 11-17 27.45-40 10-14

28.38-32?

After this change backwards black’s attack turns out to be unstoppable. It was better to try 28.48-43, although this is also better for black. We show an exemplary line: 28.48-43 7-11 29.38-32 27x38 30.43x23 13-19 31.24x13 8x28 32.49-43 14-19 33.43-38 19-23 34.35-30 17-21 35.31-26 21-27 36.38-32

113

27x38 37.33x42 4-9 38.37-31 11-16 39.42-38 12-17 40.41-37? Better is 40.30-24 40...28-33! 41.39x19 17-21 42.26x28 20-24 43.29x20 25x43 B+

28...27x38 29.33x42

29... 7-11

Black spotted that the logical 29...17-21? would be punished by a kingshot: 30.31-27! 21x32 31.29-23 28x30 32.37x17 12x21 33.35x24 20x29 34.34x1 W+

30.31-27 22x31 31.36x27

Black uses both base pieces to build a strong formation aimed at <29>: 2-7 & 4-9.

31... 2-7! 32.49-43 4-9 33.37-31

Black uses the 7/12/18 tail to take the centre.

33... 18-23! 34.29x18 13x22 35.27x18 12x23 36.24-19 9-13

37.19x10 15x4 38.43-38

Black controls a great part of the board. Now he takes <24>, leaving piece 40 inactive.

38 ... 20-24 39.41-37 13-18 40.31-27 7-12 41.37-32 28x37 42.42x31

Black takes back<28>, now forcing a win.

42... 23-28! 43.31-26 28-32 44.48-42 32x43! 45.39x48 11-16

White resigned.

Roozenburg-attack A. Tjon a Ong – W. Bor A) 4.34-30! 25x23 5.32-27 20x29 6.27-21 16x27 7.38-33 29x38 8.43x1 W+

B) 3.29-23! 20x29 4.49-44 (or another waiting move) 13x24 5.27-22 17x19 6.34x5 W+

C) Black has a dangling piece at <10>. If black can play 14-19 40-35 19x30 35x4 the piece becomes active again. D) 4... 14-19? 5.29-23! 20x27 6.23x5 W+

114

E) 5...14-19 6.29-23 20x18 7.28-22 18x27 8.37-32 27x29 9.34x5 W+

F) 6.28-23! Fixing the dangling piece at <10>. White has a superior attacking position. The game could continue: 6... 13-18 7.43-38 9-13 8.38-32 17-22 9.32-28 22-27 10.42-38 27-31 11.47-41 31x42 12.38x47 26-31 13.49-43 2-7 14.34-30 25x34 15.39x30 20-25 16.41-36 25x34 17.36x27 14-20 18.24-19 13x24 19.28-22 8-13 20.22-17 12x32 21.23x1 34x23 22.1x34 W+

2) A. van Leeuwen – J. Krajenbrink A) Usually the attacking player doesn’t want to break the Roozenburg attack too early with 18-23 30-25 23x32 33-29 24x33 39x37, since the outpost can be put under pressure or the attack can be blocked (white taking <29>. It usually makes sense to wait until the opponent’s position is weakened before Roozenburg is broken with the standard 18-23 move. Piece <50> might help attacking the outpost, so it is better to wait until the base piece is played.

B) 31...13-18! 32.43-38 (in order to meet 18-23 with 26-21 =) 9-13 33.45-40 11-16 34.40-34 17-21 35.26x17 12x21 B+1 C) 39.... 23-29 40.34x12 15-20 41.32x21 22-27 42.21x32 13-18 43.12x23 19x48 The rest of the game was: 44.49-43 11-17 45.38-32 48-42 46.43-38 42-48 47.32-27 48x25 48.33-28 20-24 49.38-33 14-19 50.27-21 24-29 51.33x13 25-39 52.21x12 39x24 (0-2)

Centre attack 1) N. de la Fonteyne – M. de Meulenare A) 1... 13-19? 2.33-28! 22x33 3.38x29 19x28 4.37-31 26x37 5.42x33 W+1

B) 7.42-37 19x28 8.37-31W+ C) 7.42-38 19x28 8.38-32 9-13 9.32x23 13-19 10.25-20! with a breakthrough for white.

D) 11... 27-32 12.37x28 13-19 13.24x4 22-27 14.4x31 26x48= 2) T. Goedemoed – M. Koopmanschap 1) 5.39-34? 21-27 6.32x21 16x27 7.34-30 8-13!

White meets tactical problems: A) 8.43-39 27-31 9.26x37 20-24 10.29x20 14x41 11.23x3 41-46 12.3-8 46x45 13.8x5 22-27 = B) 8.30-24 19x30 9.35x24 17-21 10.26x19 7-11 11.28x17 11x22 12.23x12 14x45 B+ C) 8.30-25 20-24 9.29x20 18x29 10.33x24 19x30 11.35x24? 11.25x34 22x33 12.38x29 15x33 -/+ 11...22x33 12.38x29 17-21 13.26x19 14x45 B+ 2) 5.35-30! 20-24 22...8-13 23.40-35 20-25 23...21-27 24.32x21 16x27 25.36-31! 27x36 26.26-21 17x26 27.28x8 19x28 28.8x19 14x25 29.33x4 W+ 24.30-24 19x30 25.35x24 with a very strong attack for white. 23.29x20 14x45 24.23x3 45-50 25.28-23 18x29 26.33x24 50x46 27.24-19 46x14 28.3x25 W+ J. Groenendijk – R. Wijnker A) The outpost on <28> is untouchable. It can never be attacked (4.38-33??) and it splits the white position. White is left with little space to play. B) 4... 16-21 5.27x16 18-22 6.29x27 11-17 7.32x23 26-31! 7...14-19? 8.23x14 9x49 9.50-44 49x40 10.35x44 W+1 8.37x26 17-21 9.26x17 12x32 10.38x27 14-19 11.23x14 9x47 B+

Playing against a right wing attack

K. Thijssen – S. Winkel 1.40-34! With two variations: 1) 1...3-8 2.48-42 19-23 3.45-40 23-28 4.42-38 28x39 5.34x43 9-14 6.30-25 14-19 7.49-44 19x30 8.35x24 11-16 9.40-35 6-11 10.44-39 W+ 2) 1... 9-14 2.45-40 4-9 3.48-43 14-20

115

4.33-28 22x33 5.31x22 18x27 6.29x38 20x29 7.34x14 9x20 8.30-25 20-24 9.25-20 24-29 10.20-14 with a winning position for white. C.B. Bakker – J. Krajenbrink 1985 1.33-28 18-22 2.38-33 12-18 3.31-26 19-23 4.28x19 14x23 5.42-38 7-12 6.48-42 22-27 7.32x21 16x27 8.35-30 20-25 9.40-35 10-14 10.45-40 5-10 11.33-29 23-28 12.38-32 27x38 13.43x23 13-19 14.42-38 19x28 15.37-32 28x37 16.41x32 9-13 17.39-33 1-7 18.44-39 11-16 19.49-43 7-11 20.50-45

20... 18-22! Black doesn’t allow white to take a centre attack with 29-23x23x29 while developing the pieces on his right wing. Black’s strategy is that white’s right wing isn’t developed. An attack with 30-24 will not be dynamic at all, as the game clearly shows. 21.32-27 22x31 22.26x37 16-21 23.37-31 4-9

24.31-26 21-27 25.46-41 17-22 26.41-37

Black’s piece on <27> can’t be changed, since white misses the base piece on <49>.

26... 14-19 27.30-24 19x30 28.35x24 13-18 29.37-31 9-13 30.47-41 12-17 31.41-37 8-12

32.40-35 3-8 33.45-40 11-16

34.24-19 13x24 35.29x20 15x24 36.34-29 6-11 37.29x20 25x14 38.39-34 18-23 39.35-30 8-13 40.40-35 2-8 41.43-39 12-18 42.30-25

10-15 43.34-30 8-12 44.37-32 13-19 45.32x21 16x27 46.30-24 19x30 47.25x34 23-28 48.35-30 14-19 49.34-29 19-23 50.29-24 28-32 (0-2) A. Gantwarg – J. Goudt A) White has a big lead in development and therefore his position is better. He can play against <36>. B) White’s surrounding of the black centre position looks very promising. For example: 32... 14-20 33.25x14 9x20 34.30-24! 4-10 35.38-32 10-14 36.47-42 14-19 37.35-30 20-25 38.42-38 3-9 39.49-44 9-14 40.21-17 W+ C) White has a strong attacking position. Black has no good base pieces and formations to play against it. The position is much better for white. D) 33... 4-10 is met by 34.27-21! 16x38 35.42x22 18x27 36.29x18 12x23 37.37-32 27x38 38.47-42 38x47 39.34-30 47x20 40.25x5 W+ E) 25...1-7? is met by 26.38-32 27x38 27.43x23 19x28 28.30-24 14-19 29.49-44 19x30 30.35x24 and black has no good move left. Even after 9-14 white can take a winning kingshot. F) 27...10-14 28.24-19 13x24 29.29x20 14x25 30.34-29 23x34 31.39x30 25x34 32.35-30 34x25 33.33-28 22x33 34.31x2 W+ G) 28...14-19? 29.30-25 19x30 30.25-20 15x24 31.34x25 23x34 32.39x19 13x24 33.33-28 22x33 34.31x2 W+ H) After 29...3-9 white takes over the attack, playing 30.26-21! 17x26 31.38-32 27x38 32.43x23

116

I) 33.38-32? 4-9! 34.32x23 15-20! and the 20-24 threat brings white in big troubles. J) 40...14-19! 41.25x32 22-27 42.31x22 17x48 A. Schwarzman – A. Berçot A) White transports his pieces in the direction of the right flank. This is the right direction if surrounding an attack. White needs to get an initiative on the right wing of the board.

B) 34-30 23x34 38-32 27x38 43x1 W+. C) After 41.37-32? 28x37 42.31x42 14-19 43.25x14 19x10 white has to little space to play: 44.49-44 10-15 45.44-40 6-11 46.40-35 15-20 47.35-30 20-25 --/+ 41.38-32 27x38 42.43x32 doesn’t work either, since white loses control over the right flank: 16-21 43.49-44 14-19 44.25x14 19x10 45.44-40 10-14 46.40-35 14-20 47.35-30 20-25 48.30-24 6-11 B+

D) 45.33-28! 22x24 46.26-21 17x26 47.34-29 23x34 48.39x6 W+ E) 44...16-21 45.42-37 11-16 46.37-31 27-32 47.38x27 21x32 48.40-35 23-28 49.35-30 19-23 50.30-24 W+ A. Baliakin – H. Meijer A) 28...20-24 gives a much more solid construction for black (than 28... 19-23?), in which the pieces are connected. Keeping <23> open gives white less grip on black’s attacking position. B) 31...20-24 32.38-32 27x38 33.42x33 14-19 34.25-20 24-30 35.34x25 15x24 36.48-42 9-14 37.31-27 22x31 38.36x27 W+ C) 33.34-29! 23x34 34.39x30 18-23 34...13-19 35.30-24 19x30 36.35x24 20x29 37.38-32 27x38 38.43x34 W+1 35.38-32 27x38 36.42x33 28x48 37.31-26 48x31 38.36x7 W+ T. Gerritsen – A. Domchev Nijmegen, 29-07-2010

1.32-28 16-21 2.31-26 18-22 3.37-32 11-16 4.41-37 7-11 5.34-29 1-7 6.40-34 13-18 7.45-

40 19-23 8.28x19 14x23 9.46-41 21-27 10.32x21 16x27 11.29-24 20x29 12.33x24 9-

13 13.34-30

13... 13-19 13...23-28 looks best, since black doesn’t get any weaknesses yet.

14.24x13 8x19 15.38-33! 4-9 16.37-31 9-13 17.42-38 10-14 18.40-34 14-20

19.30-25!

White takes care that he doesn’t lose control over <25>. White wants to control the right wing, playing against the right wing attack.

19... 3-8 20.25x14 19x10 21.35-30 15-20 22.30-25 10-14 23.34-30 14-19 24.25x14

19x10 25.50-45 10-14

26.30-25 Taking <25> again!

117

26... 23-28 27.41-37 11-16

Now black has played 11-16 it is the right time to change back with 37-32x42. 28.37-32 28x37 29.31x42 13-19 30.44-40 5-10

31.39-34 Threatening 25-20 W+.

31...18-23 32.34-30 12-18 33.40-34 7-12 34.45-40 10-15 35.33-29!

White has a nice construction for playing against the attack. All pieces in the Drenth-zone are still there.

35... 14-20 36.25x14 19x10 37.30-25 10-14 38.40-35 8-13 39.43-39 13-19 40.35-30 2-8

41.38-33 14-20

White has got an initiative on the right flank with the 25/29/30/33/34/39-construction. 41...23-28 is punished by 42.25-20 15x35 43.34-30 35x24 44.29x9 W+ 41...8-13 breaks the 8/12/17 wing, after which black can’t change piece <26> anymore. 42.25x14 19x10 43.30-24! 10-14 44.24-19 23-

28 45.19x10 15x4 46.48-43!

Black kept the 8/12/17 tail intact, but he can’t use it now: 46...17-21 47.26x17 12x21 48.36-31 27x36 49.47-41 36x38 50.43x3 W+

46... 8-13 47.34-30!

Black can’t play 13-19 now.

47... 6-11

Some lines to show black’s problems: 47...4-9 48.30-25 9-14 49.47-41 6-11 49...13-19 50.25-20 14x25 51.36-31 27x38 52.43x14 W+ 50.42-38 28-32 50...16-21 51.41-37 11-16 52.38-32 27x38 53.43x23 13-19 54.25-20 W+ 51.49-44 13-19 52.44-40 19-23 52...16-21 53.40-35 11-16 54.29-24 19x30 55.35x24 14-19 56.24x13 18x9 57.25-20 12-18 58.39-34 18-23 59.41-37 32x41 60.36x47 23-28 61.43-39 28-32 62.33-29 32x43 63.39x48 with a winning breakthrough. 53.29-24 14-19 54.24x13 18x9 55.25-20 12-18 56.40-34 16-21 57.34-30 11-16 58.41-37 32x41 59.36x47 27-32 60.38x27 21x32 61.30-25 etc. W+

48.30-25 4-10 49.25-20 10-14 50.20x9 13x4 51.29-24 18-23

118

52.42-37! White found a brilliant way to finish the game off! He uses a gambit.

52... 27-32 53.37-31! 23-29 54.24-20! 29x38 55.20-15!

55... 12-18 is met by 56.31-27! W+ and black has no other sensible moves. Black resigned.

T. Sijbrands. – L. Haan

Simultaneous game 2003

1.33-29 19-24 2.39-33 14-19 3.44-39 20-25 4.29x20 25x14 5.35-30 19-23 6.50-44 14-19 7.33-29 10-14 8.38-33 17-22

9.42-38 11-17 10.32-28 23x32 11.37x28 6-11 12.41-37 5-10

13.30-24 19x30 14.34x25 1-6 15.46-41 16-21 16.31-26 11-16

17.37-32 21-27 18.32x21 16x27 19.48-42 14-19

20.29-24 19x30 21.25x34 9-14 22.34-29 7-11 23.40-34 13-19

24.45-40 19-23 25.28x19 14x23

26.40-35 3-9 27.35-30 9-13 28.41-37 10-14 29.37-31 4-10

30.30-25 14-19

119

31.25-20 15x24 32.29x20 10-14

32...10-15 33.33-29! 15x33 34.38x29 23-28 35.29-24 19x30 36.34x25 18-23 37.39-34 12-18 38.25-20 17-21 39.26x17 8-12 40.17x19 23x25 41.44-39 18-23 42.34-30 25x34 43.39x30 with a breakthrough for white.

33.20x9 13x4 34.33-29 4-10

35.38-33 8-13 36.44-40 10-15

37.29-24 19x30 38.34x25 23-28 39.40-34 18-23

40.33-29 12-18 41.42-38 13-19 42.38-33 15-20 43.25x14 19x10

44.29-24 10-15

44...2-8 45.24-20 8-13 46.20-15 10-14 47.34-30 etc. W+

45.43-38 2-8 46.33-29 8-13

47.38-33

47... 13-19 48.24x13 18x9 49.29x18 22x13 50.31x22 28-32 51.47-42 17x28 52.33x22 11-17 53.22x11 6x17 54.42-38 32x43 55.49x38 13-18 56.36-31 9-13 57.31-27 13-19 58.27-21 19-23 59.21x12 18x7 60.34-30 15-20

61.26-21 Black resigned

120

T. Sijbrands – A. Gantwarg match 1989 1.33-28 17-21 2.39-33 21-26 3.44-39 11-17 4.50-44 18-23

5.31-27 6-11

White takes a strong centre position. He is not afraid of being fork-locked. 6.34-29 23x34 7.40x29 20-25 8.44-40 14-20 9.39-34

10-14

White develops his left wing, taking a lead in development ( = + 6). 10.37-31 26x37 11.42x31 5-10 12.43-39 19-24 13.47-42

14-19 14.41-37 10-14

White doesn’t play 49-43? But the more accurate 49-44!. It is important to have a piece on <44> In order to get out the fork-lock later. 15.49-44 17-21 16.31-26 1-6 17.26x17 11x31 18.36x27

7-11 19.48-43 11-17

White attacks 27-22, not afraid of 6-11. After the temp 13-18 white escapes from the fork-lock.

20.27-22 13-18 21.22x13 9x18

White changes and escapes from the fork-lock. Now you see the importance of a piece on <44>!

22.28-23 19x28 23.33x13 8x19 24.46-41 24x33

25.39x28 3-9 26.44-39 9-13 27.38-33 4-9 28.42-38 2-8

White challenges his opponent to take a fork-lock once more! White judges his centre to be strong enough for allowing a fork-lock. 29.34-29 19-24 30.40-34 17-22 31.28x17 12x21 32.32-

28 13-19 33.38-32 9-13 34.37-31 6-11 35.41-37 8-12

36.43-38 21-26

Black has no active formations on his right flank to do anything constructive with the fork-lock. He flees to the edge after which white gets a strong centre position.

37.31-27 24-30 38.35x24 19x30 39.45-40 11-17

121

White has two pyramids and decides it is time to attack.

40.28-23 30-35 41.32-28 35x44 42.39x50 17-21

43.27-22 12-17 44.22x11 16x7 45.28-22 14-19

46.23x14 20x9

Analyses showed that 29-23 would be stronger. But 29-24 will result in a win after Gantwarg misses the best defence. 47.29-24 9-14 48.34-29 21-27 49.22x31 14-19 50.33-28

19x30 51.28-22 15-20 52.29-23 7-12

White breaks through. Black didn’t find the right defence (56... 25-30) and loses the endgame.

53.23-18 12x23 54.22-17 30-34 55.17-11 34-39 56.11-

7 23-29? 57.7-2 39-43 58.2x48 29-34 59.48x30 25x34 60.31-27 34-39

61.27-22 20-24 62.22-18 24-29 63.18-13 29-33 64.38x29 39-43 65.13-9 43-49 66.29-

23 2-0

Guessing the moves We follow the game R. Palmer – T. Sijbrands 1992. Guess the move Sijbrands played in every diagram. Black is to move!

1

2

3

4

5

6

7

122

8

9

10

Now we follow the game T. Sijbrands – Macadou N’Diaye match 1994 Guess the moves Sijbrands played. White is to move!

1

2

3

4

5

6

7

8

123

9

10

11

A. Chizhov – G. Valneris Wch match 1996 (barrage)

1

2

3

4

5

6

7

8

124

9

10

A. Chizhov – G. Valneris Wch 2007

1

2

3

4

5

6

7

8

9

10

125

11

12

13

A. Schwarzman – A. Chizhov Wch 2007 Guess the black moves.

1

2

3

4

5

6

7

8

126

A. Chizhov – W.Borogan 1987

1

2

3

4

5

6

7

8

9

10

11

12

127

13

14

128

Guessing the moves

R. Palmer - T. Sijbrands Nieland 1992

1.32-28 18-23 2.33-29 23x32 3.37x28 17-22

4.28x17 11x22 5.39-33 13-18 6.44-39 19-23 7.50-44

14-19 8.41-37 10-14 9.37-32 6-11 10.29-24

10... 20x29 11.33x13 8x19

12.32-27

Black builds up a strong centre.

12... 2-8 13.34-29 23x34

14.39x30 19-23 15.44-39 8-13 16.38-33 15-20 17.30-25

17... 14-19 18.25x14 9x20 19.35-30 5-10 20.30-25 20-

24 21.39-34

Black makes the pseudo-sacrifice and chances 2 for 2. The semi-fork disappears and black controls the centre. White’s position is being split. 21... 22-28 22.33x22 10-14 23.42-38 23-29 24.34x23

19x17 25.46-41

25... 17-21 Hitting on the central <38>, while developing his right wing.

26.47-42 21x32 27.38x27 11-17 28.43-38 14-19

29.49-43

Once again this move, white decides to go to <28> now. 29... 17-21 30.42-37 21x32 31.37x28 12-17 32.41-37

18-23 33.37-32

Black wants wing-control. 33... 17-21 34.31-27 21-26

35.27-22 7-12 36.36-31 26x37 37.32x41 23x32

38.38x27 1-6 39.41-37 19-23 40.37-31

Changing <22> gives black a strong centre position 40... 12-17 41.22x11 6x17

42.43-38 13-18 43.48-43 3-8 44.38-32

44... 17-22 45.40-34

129

White should have changed back, but after 45.31-26 22x31 46.26x37 18-22 47.37-31 16-21 48.31-26 22-27 49.26x17 27x49 50.17-11 49x35 black wins.

45...8-12 46.43-38 12-17 47.45-40

47... 22-28 0-2 (1.59/1.59) T. Sijbrands – Macadou N'Diaye match 1994 1.34-29 20-25 2.40-34 15-20

3.45-40 19-24

Sometimes 35-30 24x35 29-23 18x29 33x15 is played, but Sijbrands chooses to play a centre strategy. He doesn’t want to escape from the fork-lock yet. 4.32-28 17-21 5.37-32 21-26

6.50-45 26x37 7.42x31 16-21

8.31-26 14-19 9.26x17 11x22 10.28x17 12x21

11.41-37 10-14

Black has kept <15> open. White takes the opportunity to take an outpost. Black has to change the outpost and is left with an awkward left wing.

12.29-23 18x29 13.34x23 19x28 14.32x23 5-10 15.40-

34 13-18 16.23x12 7x18 17.37-32 9-13 18.44-40

21-26

19.32-28 1-7 20.46-41 7-12 21.41-37 2-7

22.38-32 4-9 23.48-42 13-19

23... 7-11 is met by a kingshot!

24.42-38 10-15

White chooses to be fork-locked himself! His centre is so strong that he can do this.

25.34-29 18-22 26.28x17 12x21 27.36-31 6-11

28.32-28 11-16 29.38-32 9-13 30.31-27 3-9

130

31.47-41 24-30 32.35x24 19x30

Black had to flee to the edge. White takes a strong attack with outposts at <22 & 23>.

33.29-23 13-19 34.41-36 7-12

35.27-22 9-13

36.22-18 13x22 37.28x17

19x28 38.33x22 30-35 39.17-11 35x33 40.11-6 33-38 41.32-28 8-13 42.43x32

12-18 43.22-17 21x12 44.6-1 2-0 (1.56/1.56)

A. Chizhov – G. Valneris Wch match 1996 (barrage) 1.32-28 17-21 2.37-32 11-17 3.31-26 7-11 4.36-31 18-22

5.41-36 13-18 6.31-27 22x31 7.36x27 9-13 8.46-41

1-7

9.34-30 19-23 10.28x19 14x23 11.41-37 10-14

12.30-25 23-29 13.33x24 20x29 14.47-41 18-23

15.40-34 29x40 16.45x34 13-19

17.34-29 23x34 18.39x30

12-18 19.30-24 19x30 20.25x34 8-13 21.44-39 4-9 22.39-33 14-19 23.49-44 2-8

24.44-39 5-10

25.34-30 10-14 26.50-45 18-23 27.45-40 14-20

28.40-34 20-24

29.27-22 17x28 30.33x22 7-12 31.26x17 12x21 32.39-33 11-17 33.22x11 6x17

131

34.37-31 13-18 35.31-27 8-

13 36.41-36 9-14

37.33-28 3-8

38.36-31 21-26 39.30-25 26x37 40.42x31 8-12 41.34-

30 23-29

42.31-26 16-21

42...18-23 is a better defence.

43.27x16 18-22 44.48-42 22x33 45.32-27 13-18

46.26-21 17x26 47.16-11 18-23 48.11-6 23-28 49.27-

22 28x17 50.6-1 17-21 51.1x45 14-20 52.25x23 24-29 53.23x34 33-39 54.45-50

39x37 2-0 (0.49/0.59)

A. Chizhov – G. Valneris Wch 2007

1.34-29 18-23 2.29x18 13x22

3.31-27 22x31 4.36x27 8-13 5.41-36 2-8 6.37-31 12-18

7.46-41 7-12 8.41-37 19-23 9.40-34 20-24

10.47-41 1-7 11.44-40 14-19 12.50-44 10-14

13.34-29 23x34 14.40x20 15x24 15.32-28 17-22

16.28x17 12x32

17.38x27 5-10 18.43-38 19-23 19.45-40 14-19 20.40-34

10-14

21.37-32 4-10 22.41-37 10-15 23.49-43 14-20

132

24.34-29 23x34 25.39x30 18-23 26.44-39 8-12

27.31-26 20-25 28.37-31 25x34 29.39x30 15-20

30.43-39 20-25 31.39-34 24-29 32.33x24 23-29

33.34x14 9x29 34.32-28 25x34 35.48-43 12-18

36.28-23 7-12 37.35-30 34x25 38.23x34 3-9 39.38-33 12-17 40.42-38 17-21

41.26x17 11x22

42.38-32 6-11 43.33-29 11-17

44.29-24 17-21 45.31-26 22x31 46.36x27 9-14

47.26x17 14-19 48.24-20 25x14 49.43-38 18-23

50.27-21 16x27 51.32x21 19-24 52.17-12 24-29 53.34-

30 13-19 54.12-8 23-28

55.21-16 2-0 (2.11/2.40)

A. Schwarzman – A. Chizhov Wch 2007

1.32-28 17-22 2.28x17 12x21 3.33-28 21-26 4.31-

27 7-12 5.37-31 26x37 6.41x32 19-23 7.28x19

14x23 8.39-33 11-17 9.46-41 10-14 10.41-37 5-10

11.44-39 6-11 12.37-31 14-19 13.42-37 10-14 14.47-42

14... 17-22 15.49-44 11-17 16.34-29 23x34 17.39x30

19-23 18.30-25

18... 23-29 19.33x24 20x29

20.44-39 13-19 21.40-34 29x40 22.45x34

22... 19-24 23.34-30 4-10 24.30x19 14x23 25.39-33

10-14 26.43-39 8-13

133

27.48-43 13-19 28.50-44 9-13 29.44-40

29,.. 19-24 30.31-26 22x31 31.36x27 2-8 32.33-28 14-

19 33.39-33

33... 17-21 34.26x17 12x21 35.43-39 3-9 36.40-34 9-14

37.28-22

37... 24-30 38.35x24 19x30 39.33-28 14-19 40.25-20

15x24 41.34x25

41... 1-7 42.39-34 7-12 43.37-31

43... 21-26 44.42-37 16-21 45.27x16 18x36 46.16-11

12-17 47.11x22 26-31 48.37x26 36-41 49.34-30

24x35 50.25-20 23-29 51.20-15 41-46 52.32-27

46x23 53.15-10 35-40 54.22-17 8-12 55.17x8 13x2 56.10-4 40-45 57.4-22 45-50

58.22-6 23-18 59.26-21 18x36 0-2 (2.59/2.30)

A. Chizhov – W.Borogan 1987

1.34-29 18-23 2.29x18 13x22 3.35-30 19-23

4.32-28 23x32 5.38x18 12x23 6.42-38 7-12 7.37-32 1-7 8.41-37 20-25 9.46-41

25x34 10.40x18 12x23 11.45-40 7-12

12.32-28 23x32 13.37x28 14-19 14.41-37 10-14 15.38-

32 5-10 16.43-38 9-13 17.49-43 13-18

18.28-23 19x28 19.33x13 8x19 20.39-33 4-9

21.43-39 19-23 22.50-45 9-13

134

23.39-34 14-19 24.48-43 10-14 25.44-39 2-8

26.34-29 23x34 27.40x29 12-18

28.31-27 8-12 29.45-40 3-8 30.39-34 14-20

31.47-42 19-23 32.37-31 20-25 33.40-35 15-20

34.33-28 17-22 35.28x17 11x22

36.35-30 13-19

37.31-26 22x31 38.36x27 20-24 39.29x20 25x14

40.38-33 14-20

41.33-29 12-17 42.43-39 20-25 43.42-38 17-22

44.29-24 22x31 45.24x2 31-36 46.2-24 36-41

47.34-29 25x43 48.38x49 23x34 49.26-21 16x38 50.24x4 2-0 (1.35/1.20)

S4. The thinking process

135

The right way of thinking is a complicated process. In order to play the best moves you need to think in a systematic way. We offered a scheme for the thinking process: First looking for candidate moves, then calculating to compare the moves and select the best, and finally check if you really want to play this move. We also elaborated on psychological aspects of the game, time management and fair play. In this chapter you can practice how to use you time properly.


Find the best move using the thinking process Which candidate clue is relevant? Choose your move! Comparing candidate moves Time management 1 Time management 2 A casus of time trouble How much time would you take?


136

Find the best move using the thinking process!

1

2 Black

3

4 White

20 minutes

5 Black

6

7

8


137

Which candidate clue is relevant?

In the course we learned several clues that will help you find the right move to play. Clues to find the best move are:

The opponent’s move

Positional desirability

Following your strategy

Building up

Waiting moves

Defending

Best move situation

Best chance situation

Building up

Tactics

Candidate clues

1

White played 48-42?

A) Why is this not the right move?

B) Which move is better. Which clue(s) did you use to find the right move?

1...8-12 2.44-39 14-20 3.40-34

C) Which move should black have played now and why?

2

Which clues do you use in this situation to find the best move? Which move is best?

3

Black played 20-24? Usually it is good to take <24>, but in this case it is a mistake. Positional desirable was 10-15. Can you explain why?

4

Which move would you choose to play (white to move)? Which clues are relevant?


138

5

Explain why this is a best-chance-situation!

6

Which candidate clue dominates this position? Which move should white play?

7

White played 34-29. Do you agree with this move? Explain why!

8

White played 40-34. Comment on this move!

9

Which candidate clue do you (white) use to play the right move?

10

Black played 6-11? Explain why this is not a good move.


139

11

Black is to move. In order to find the right move you have to be aware of white’s plan. A) Which plan does white have? If you know white’s plan you have to defend your position against this. In order to defend this position you need tactical possibilities. So defending and tactics should be your clues to calculate the right move. B) Why is 2-7 as played in the game not good? Black should play 1... 17-22! White has three candidate moves: 2.41-36, 2.39-34 & 2.37-31. We look at all possibilities.

1) 2.41-36 22x31 3.36x27 11-17 4.39-34

Black has two tactical options: 1.1) 4... 4-10

C) Which kingshot can black perform after 5.34-29 ?

1.2) 4... 17-22

D) Which kingshot can black perform after 5.34-39 22x31 5.37x26 ?

2) 2.39-34 22x31 3.37x26 4-10 E) How is 34-29 punished now?

3) 2.37-31 11-17 F) Which shot can black perform after 4.39-34?

There are more variations, but we stick to the most important ones.

12

A) Try to judge this position (white to move). B) How would you continue with white? Can you show a logical line in which white freezes out his opponent?

13

Black played 20-25 in a blitz game. White didn’t play the logical 46-41? now. Which candidate clues helped him to see that 46-41 isn’t the right move.?


140

14

White played 1.38-32 Comment on this move!

15

Try to find the best move for white! Which candidate clues did you use?

16

Describe the position in words. Which move does white have to play?

17

Analyse this position by comparing white’s candidate moves. Which move do you advise white to play?

18

A) Try to judge this position 9white to move).

B) Which move should white play and why?

19

This is a best-chance-situation. Which move gives white the best chance to win?


141

Choose your move!

1

2

3

4

Which candidate clue(s) did you use?

5

6 Black

7

8


142

Comparing candidate moves

1

A) Which are white’s candidate moves? B) Compare the moves and choose the best one!

2

P. Steijlen - G. Jansen

A) Describe the position in words. B) How much time would you use for this position?

C) Compare the several candidate moves and choose the best one!

3

R. Heusdens – J. Groenendijk Black to move has two candidate moves. Which one would you choose?

4

R. Boomstra – C. van Dusseldorp

A) Which are white’s candidate moves?

B) Which move would you choose to play?


143

5

K. Thijssen – N. Waterink A) Describe the position in words and try to judge it (white to move). B) The strong strategic white player has two candidate moves. Which two moves? C) Which of the two would you choose and why?

6

R. Heusdens – A. Baliakin A) Describe the position. Which will be white’s strategy? B) Which candidate moves does white have? Which one do you choose?

7

M. Slezak – R. Boomstra A) Describe the position in words. White played 36.27-22?! B) Which are black’s candidate moves and which one is best?

8

W. Ludwig – A. Baliakin

Black played 17... 18-22 18.27x18 12x23. A) Which are white’s candidate moves? B) Make your choice!


144

Time management 1

Draw the position in the empty diagrams. White had 2 hours for 50 moves (then he got an extra hour again) Write down how much time he should use according to you for every 10 moves. Can you spot a better move between 40

th and

50th move (white could have won) ?

K. Thijssen – T. Harmsma 1.33-29 20-25 2.32-28 15-20 3.28-23 19x28 4.29-24 20x29 5.34x32 14-19 6.39-33 10-14 7.44-39 17-21 8.32-28 5-10 9.37-32 11-17 10.31-26 7-11

= ............

11.41-37 19-23 12.28x19 14x23 13.36-31 25-30 14.35x24 23-28 15.33x22 18x36 16.39-33 10-14

17.50-44 1-7 18.44-39 21-27 19.32x21 16x27 20.40-34 13-18

= ............

21.45-40 8-13 22.40-35 3-8

23.34-30 11-16 24.39-34 17-21 25.26x17 12x21 26.30-25 7-12 27.34-30 6-11 28.33-29 21-26

29.24-20 27-31 30.30-24 11-17

= ............

31.38-33 17-22 32.20-15 13-19 33.24x13 8x19 34.29-24 19x30

35.35x24 2-8 36.43-38 8-13 37.33-29 14-19 38.25-20 19x30 39.20-14 9x20 40.15x35 13-19

= ............

41.29-24 19x30 42.35x24 18-23 43.49-44 16-21 44.44-39 12-18 45.24-20 4-10 46.39-34 22-28 47.46-41 18-22 48.48-43 22-27 49.20-15 10-14 50.43-39 14-19

Draw.


145

Time management 2 White has 1 hour and 20 minutes plus an extra 60 second for every move. So, for 50 moves you get 80 + 50 = 2 hours and 1 hour and 10 minutes. Show how much time you should use, reaching the position of the diagrams. Between the 40

th and 50

th move of the game white

missed a winning continuation. Can you spot it?

B. Bies – A. Schotanus 1.32-28 17-22 2.28x17 11x22 3.37-32 12-17 4.41-37 6-11 5.46-41 8-12 6.32-28 16-21 7.31-26 21-27 8.36-31 27x36 9.26-21 17x26 10.28x 6 19-23

=

11.34-30 14-19 12.30-25 10-14 13.40-34 12-17 14.44-40 7-11 15.34-29 23x34 16.39x30 19-23 17.33-29 23x34 18.40x29 2- 8 19.45-40 4-10 20.40-34 13-19

=

21.49-44 8-13 22.44-40 20-24 23.29x20 15x24 24.43-39 17-21 25. 6x17 21x12 26.39-33 1- 7 27.50-45 12-17 28.37-32 7-11 29.41-37 17-21 30.33-28 21-27

=

31.32x21 26x17 32.28-23 18x29 33.34x23 19x28 34.30x 8 3x12 35.40-34 9-13 36.45-40 17-22 37.34-29 11-17 38.40-34 17-21 39.34-30 21-27 40.30-24 13-19

=

41.24x13 14-20 42.25x14 10x 8 43.29-24 8-13 44.35-30 12-18 45.24-20 13-19 46.20-15 19-23

47.37-32 28x37 48.42x31 23-29 49.30-25 29-34 50.25-20 34-40

=

51.20-14 40-44 52.15-10 27-32 53.38x27 44-50 54.31-26 22x31 55.26x37 50-39 Draw.


146

Cases of time trouble

1

G. Leclair – A. Andreiko

Andreiko was a much stronger player than Leclair, a player from the USA. He must have nearly fallen asleep due to a lack of concentration, since Andreiko plyed the terrible 18... 3-9? Not until Lecalir’s reply 19.44-40! He realised having made a huge mistake. Black will always lose a piece, since 19... 17-21 is met by 20.30-24! 19x39 21.29-24 21x32 22.37x10 W+. 22-28 and 23-28 lose a piece. Andreiko thought for a lon time. He deliberately waited to make a move, while his clock kept on running. He only made a move (22-28) after having left a couple of minutes on the clock. QUESTION: What would you do being white? Would you try to take advantage of black’s time trouble or would you try to convert the gained piece into a win by using all your time calculating?

H. Dijkstra - J. Elzinga White had to play his 50th move of the game. It was a game with 1 hour and 30 minutes for 50 moves and 20 moves for the rest of the game. Since white had left little time he played 50.43-38? quickly.

A) Which would have been the right move? Black replied 50... 12-17 and then asked his opponent: Do we have the 50 moves already? I believe we have to play one more move, right?” White became insecure if he really had played 50 moves and quickly played 51.38-32? B) How did black win now?

C) How should white have reacted?

Marino Barkel shows the right fighting spirit ...


147

How much time would you take?

1

Black to move

A) Describe the position and try to judge it. B) How much time do you want to take in this position and why? C) Which of the candidate moves are you going to play?

2

How much time would you want to use in this position?

3

White to move. Judge the position, find white’s candidate moves and consider how much time you would use for finding the right move.

4

Black just played 39... 13-18. How much time would you use with white to move?

5

How much time would you use with white to make your move? Explain why.


148

6

Georgiev was to move with white. What do you think? Did he take a lot of time here or did he play quickly?

7

Black was to move. How much time would you take being black?

8

How much tine do you take and which move do you play?

9

Black is to move. Black had 22 minutes left on the clock for 15 more moves. How much time would you use?

A) 1 minute B) 2 minutes C) 4 minutes D) 7 minutes

10

White to move. How much time would you use?

A) 30 seconds B) 3 minutes C) 5 minutes D) 8 minutes


149

Solutions

Find the best move 1) White has a Roozenburg attack. He doesn’t have many moves to play, since 33-28 would be punished: 1.33-28? 15-20! 2.24x4 12-17 3.28x19 13x22 4.4x16 17-21 5.16x27 22x31 There is only one candidate move left and it turns out to be a winning move, since after the waiting move 1.40-35! black hasn’t got a good move left anymore.

1... 7-11 2.27-22 W+

1... 9-14 2.27-22 W+

1 ... 12-17 2.37-31 W+

1 ... 10-14 2.24-19 13x24 3.29x20 15x24 4.34-39 23x34 5.39x10 W+

2) A. Domchev – B. Wollaert (Korbach 2012) The game was 1...8-13? And white surprised his opponent with an impossible move! 2.32-27!! 2-7 (2...17-21 3.28x30 21x43 4.30-24 43-49 5.35-30 49-43 6.30-25 9-13 7.31-27 43x21 8.48-43 21x49 9.40-35 49x40 10.35x44 etc. W+) 3.27x18 12x43 4.37-32 26x28 5.33x2 24x33 6.2x49 ] Black could have forced winning a piece however. 1...6-11! If white plays 48-42 the gap on <43> is a severe weakness. If he plays 48-43 however, the gap at <42> is a weakness, since white can’t play at his left wing anymore.

1. 2.48-42 8-13 3.31-27 22x31 4.36x27 17-21 5.28-23 [ 5.28-22 13-18 6.22x13 9x18 B+] 5...12-17 6.34-30 13-18 7.30x19 20-25 8.23x12 14x43 9.38x49 17x8 B+1

2. 2.48-43 16-21 3.34-30 12-18 4.30x19 14x34 5.40x29 [5.39x30 is punished by a kingshot!] 20-24 6.29x20 15x24 with the strong threat of 24-29 +. White has no defence left.

3) White has a good Ghestem-lock. He has to try to freeze black out. In order to limit black’s space to play white should start with 1.38-33. At 1.34-30 black gains space playing 24-29! (black can also play 4-10) after which white can’t attack the outpost (39-33? 19-24 B+) and after 2.39-34 29x40 3.35x44 black takes more space again playing 3... 23-29 (4.28-23 doesn’t yield a positive result after 17x28 23x14 28-33 etc.). After 1.38-33! black faces huge problems: 1...4-10 is punished by a kingshot: 2.35-30! 24x35 3.34-29 23x34 4.39x30 35x24 5.33-29 24x33 6.28x39 17x28 7.32x5 21x41 8.36x47 W+ ;

1...4-9 is met by 2.36-31! 9-14 ( Black's best defence is 2...24-29 3.33x24 19x30 4.35x24 8-12 5.28x8 17x28 6.8x6 9-14 7.32x23 21x41 8.31-27 ++/-) 3.43-38 14-20 4.34-30 20-25 5.39-34 and black is frozen out. 1...8-12 2.34-30 4-10 [ 2...23-29 3.28-23! 29x49 4.23x14 17x28 5.30x6 results in a lost endgame for black. ] 3.39-34 10-14 4.43-39 12-18 5.30-25 and black is frozen out. 4) T. Berends – A. Scholma White has an attack with outposts on <23 & 24>. How to continue the attack? Candidate moves are 23-19, 32-28 and 30-25. In the game white wanted to take more space and played 1.23-19? This looks nice at first glance, since 20-25 (19-13), 9-13 (30-25) and 18-22 (19-14 20-25 14-10-4) all lose. But in such case you have to be alert! Isn’t this a trap? White overlooked the tactical point of the position: 1.23-19 26-31! 2.37x26 17-22 3.26x28 20-25 4.32x21 25x43 B+. So, 1.23-19 isn’t a candidate move anymore. 1.32-28 9-14 2.30-25 (2.24-19 20-24 3.29x9 18x29 4.33x24 3x43 B+) 2...27-31 isn’t very attractive, since the attack is blocked: white can't play 24-19 because of 20-24! 3.37-32 8-13 and white has to give a piece in order to break the block, making a draw. 4.23-19 14x34 5.25x14= The best way to continue the attack turns out to be 1.30-25! 8-13 2.25x14 9x20 3.23-19! 3-8 4.32-28 27-31 5.28-23 31-36 [ 5...17-22? 6.35-30! 20-25 7.47-41 25x34 8.29x40 18x20 9.41-36 13x24 10.36x7 ; 5...18-22 6.35-30 20-25 7.19-14 25x34 8.29x40 W+ ] It looks as if the attack is on a dead end, but white sacrifices a piece in order to make a breakthrough. 6.19-14! 20x9 7.24-20 15x24 8.29x20 18x29 9.33x24 etc. +/-

5) N. Kloppenburg – R. Schrooten Black has to look for tactics first. Black could have forced a win: 1...12-17! Threatening to win a piece by 28-32. 2.31-26 28-32 3.27-21 23-28! 4.21x23 28x48 5.38x27 B+ 6) J. Zweerink – D. Staal Candidate moves are 1.29-24 or moves that make the exchange 23x34 30x39. Changing shouldn’t be done by playing 1.38-33?? 23x34 2.30x39 since the gap at <38> allows black to take a simple kingshot with 14-20 & 13-19. In the game white played 1.37-32 23x34 2.30x39 allowing black to develop pieces <15 & 5> by 15-20-24 and after 14-19 piece <5> will also become active. In order to profit form the inactive piece on <5> white should play 1.29-24 14-19* 2.38-33!


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This situation with a fork-lock at the right wing gives both tactical and strategic options for white. Piece 5 can’t come into play and white want to conquer <28>, after which white can take advantage of the weakness on <8>. This gives white opportunities to break through, eliminating piece <19>. 2...5-10 is met by 3.27-21! 16x27 4.37-32 27x20 5.25x5 ++/-. After 2... 6-11 white shouldn’t hurry and play 3.37-32, since black uses the gap at <38>: 23-28! 4.32x14 15-20 5.24x15 13-19 6.14x23 18x49 =. 2...6-11 should be answered by 3.43-38 11-17 4.25-20! And white will always win helped by tactics: 1) 17-22 27-21 16x27 20-24 19x10 24-20 15x24 30x19 W+ 2) 17-21 5.27-22 18x27 6.30-25! 19x30 7.25x34 15x24 8.33-29 24x33 9.38x7 W+ 3) 23-29 30-25 19x30 25x23 15x24 23-19 W+1 4) 5-10 20-14 17-21 14x5 21x41/43 and 30-25 is decisive. We continue our analysis with: 2... 12-17 3.43-39 6-11 3...5-10 4.37-32 10-14 5.33-28 17-21 6.42-38 6-11 7.25-20 14x43 8.38x49 19x30 9.28x8 W+ 4.37-32! 5-10 4... 17-22 is met by the breakthrough 25-20-14 & 24-20 30x8 W+ 4... 18-22 5.27x9 23-29 6.24x13 29x47 leads to a bad endgame for black. 5.33-28 10-14 6.42-38 17-21 7.25-20! W+ 7) K. ter Braake – J. Wiering White has to choose between 37-32 and 38-32. 1.37-32? leaves white’s left wing unprotected. 6-11 2.39-33 11-17 3.47-41 17-22 4.41-36 22x31 5.36x27 18-22 6.27x18 13x22 black breaking through to king. White has to play 1.38-32! in order to defend his left wing against a breakthrough. 8) Wenlong Gao – M. Luiten White uses piece <36> to profit from the gaps in black’s position. 1.39-34! 11-16 Igf black closes <14> white still has a shot: 1...10-14 2.47-41 36x47 3.37-31 47x50 4.48-42 50x22 5.27x16 W+ 2.47-41! 36x47 3.38-33 47x29 4.27-21 16x38 5.37-31 23x32 6.34x5 W+

Which candidate clue is relevant?

1A) J. Terpstra – H. Kroesbergen 1.48-42? is a positional mistake. White plays the golden piece <48>, breaking the 37 / 42/

48 tail. This formation is important for having control over the left flank. After 48-42? white can’t change 37-31 anymore and loses control over the left flank. B) White should have played the positional correct 47-42! (Clue: positional desirability) for example: 8-12 2.37-31 26x37 3.42x31 3-8 4.31-26 (Or 4.31-27 22x31 5.36x27 and black gets counter play by 14-19 6.40-35 19x30 7.35x24 12-18 8.48-42 18-22 9.27x18 13x22 10.44-39 10-14 11.45-40 14-19 12.24x13 8x19 =) =. C) Black should follow his strategy, blocking white’s right wing attack while attacking the outpost on <24>. In the game black played 9-14 allowing white to make a break through shot (so tactics is involved too!): 4.34-30! 25x23 5.28x8 2x13 (5...20x29 6.33x24 2x13 7.32-27 21x41 8.24-19 13x24 9.42-37 41x32 10.38x7) 6.24-19 13x24 7.32-27 21x41 8.42-37 41x32 9.38x7. 3...12-18! White can’t defend his piece by playing 4.28-23 since 10-14 5.23x12 17x8 6.45-40 14-19 7.40-35 19x30 8.35x24 9-14 is winning a piece for black. 4.45-40 10-14 5.49-44 4-10 6.28-23 22-27 7.23x12 17x8 8.33-28 14-19 A) 9.28-23 19x28 (9...19x30? 10.37-31 26x19 11.29-24 20x29 12.34x5) 10.32x23 10-14 11.37-32 14-19 12.23x14 13-19 13.24x4 20x9 14.4x31 26x48 B+ B) 9.40-35 19x30 10.35x24 13-18! (10... 10-14 can be met by 11.34-30! 25x23 12.28x10 15x4 13.24x15 =) 11.44-40 (After 11.28-23 9-13 12.23x12 8x17 13.44-40 10-14 white has no sensible move left.) 11...26-31! 12.37x17 27-31 13.36x27 18-22 14.27x18 8-12 15.17x8 2x35 -/++ 2) M. Koopmanschap – B. Provoost Black’s last move 24-30 is attacking a piece, so white should consider making a shot, since there also is a 32 x 3 track to king. So white uses the opponents move and tactics as clues. White’s calculation should be as follows: 1.40-35? 30x39 2.27-22 18x27 3.28-22 27x18 If white takes an immediate kingshot with 4.38-33 39x28 5.32x3 the king is caught, so white considers giving an extra piece: 4.35-30 25x34 5.38-33 39x28 6.32x3 but black replies 21-27! 7.3x21 16x27 8.45-40 13-19 9.40-34 19-24 black wins by threefold opposition. The candidate moves are reduced to 34-29 & 38-33. 1.34-29 30-35! 2.40-34 (white can’t play 28-23 ...) 13-19! Is very bad for white.


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So, white should simply defend the piece by playing 1.38-33 30x39 2.33x44. 3) K. Thijssen – F. Andriessen After 1... 20-24? 2.34-29! 10-15 3.29x20 15x24 4.37-31! Black can’t go to <22> to prevent him from being locked. In the game 4... 7-12 5.31-26 was played and the right wing lock caused trouble for black. Black should have played 1... 10-15 still having control over <24>. But not occupying the square. Now after 2.37-31 he can play 17-22! preventing being locked with an equal position. 4) M. Barkel - A. Baliakin This is a sharp position, with a best move situation. You have to use the thinking process to find the best move. So let’s examine which are candidate moves. Tactics can rule out the 30-24 move: 1) 1.30-24 19x30 2.35x24 20x29 3.34x23 18x29 4.33x24 17-22 5.27x7 8-12 6.7x18 13x35 B+ 2) 1.28-23 18x29 2.34x23 19x28 3.33x11 25x34 4.40x29 6x17 5.29-24 20x29 6.27-22 17x28 7.32x34 leads to a worse position for white. 3) The game was 1.36-31? 17-22! 2.28x17 20-24 3.33-28 18-23 4.41-36 12-18 5.17-11 6x17 6.38-33? (White could have escaped by taking a Kung Fu shot: 6.27-22 18x27 7.31x11 16x7 8.37-31 26x48 9.39-33 48x39 10.34x43 25x34 11.40x18 13x22 12.28x26=) 14-20 7.42-38 17-22 8.28x17 21x12 and black won the game. 4) It needs strong calculation to find the best move: 1.33-29! 6-11 [ 1...18-22 2.27x7 8-12 3.7x18 13x24 is met by 4.32-27! 21x32 5.37x28 16-21 (5...9-13 6.41-37 3-8 7.28-23 19x28 8.30x10 15x4 9.38-32 W+1) 6.28-23 19x28 7.30x10 15x4 8.35-30 and white gains a piece. 2.39-33 20-24 3.29x20 15x24 4.28-23!! 19x48 5.30x10 48x30 6.35x24 9-14 7.10x19 25-30 8.24x35 13x24 9.40-34 After this tactical intermezzo black’s position is a mess, especially the dangling piece on ,11> is terrible. White is helped by tactics too. 8-13 9... 18-23 10.38-33 8-13 is punished by 11.27-22! 17x30 12.32-27 21x32 13.37x6 W+ 10.38-33 13-19 11.33-28 18-23 12.45-40 with a positional win for white. 5) K.H. Leijenaar – Vogelenzang This is a best chance situation, because after 1.37-31?! black can keep the game equal playing 27-32! 2.38x27 21x32 =. The more logical reply 1... 23-28 is punished by a deep forcing however: 1... 23-28? 2.33x22! 27x18 3.31-26 3-8 4.26x17 7-12 5.36-31 12x21 6.31-26 21-27 7.26-21 27-31 8.43-39 16x27 9.38-32

27x38 10.39-33 38x29 11.30-24 19x30 12.25x3 31-37 13.40-34 9-13 14.3-26 37-41 15.48-42 W+ 6) Tactics rule this position with white having a right wing attack and black’s left wing being locked. White has to take care fotr the 20 x 47 track to king. As a matter of fact, black is threatening to make a shot introduced by 27-31 & 17-22. Several moves are tactically punished: 1) 1.35-30? 1...27-31 2.36x27 17-22 3.28x17 12x32 4.23x3 13-18 5.38x27 18-23 6.29x18 20x47 7.3x20 15x35 B+ 2) 1.43-39? Creating a gap at <43>, is also tactically punished: 14-19 2.23x14 10x30 3.25x34 (3.35x24 17-21 4.25x14 27-31 5.36x27 21x32 B+) 3...17-21! 4.28-23 20-24 5.29x20 18x40 6.35x44 15x24 B+1 ; 3) 1.46-41 17-21! (Even stronger than the shot with 27-32) 2.35-30 14-19!! 3.23x14 (3.25x14 15-20 4.24x4 19x10 5.4x15 5-10 6.15x4 13-19 7.4x31 26x46 8.23x14 46x9 B+) 3...10x19 4.25x23 15-20 5.24x15 5-10 6.15x4 13-19 7.4x31 26x46 8.23x14 46x9 B+ 4) The best move, avoiding shots, is 1.42-37! And after 14-19 2.23x14 10x30 white has to capture backwards: 3.25x34=. 7) E. Prosman - E. Maijenburg (blindfold game) White built the power block in order to put pressure on <24>. Therefore 34-29 is a move that fits in white’s strategy. The other candidate move 37-31 26x37 42x31 doesn’t give any advantage. The 34-29 continuation isn’t analytically winning but that doesn’t matter. White should follow his strategy. This line still gives the best chance for black to go wrong and lose: 1.34-29 23x34 2.40x20 15x24 3.27-22 18x27 4.32x12 8x17 5.45-40 Threatening to make a breakthrough with 28-23 etc. 2-8 6.40-34 Black didn’t see a way to defend piece <24>, so he resigned. Black could have defended his position with a shot: 6... 13-18! 7.34-29 11-16 8.29x20 17-22 9.28x17 18-22 10.17x28 9-13 11.20x18 19-24 12.30x19 8-13 13.19x8 3x41 =. 8) T. Sijbrands – David This is a position in which white built a fork on his right wing in order to put pressure on <24>, so 1.40-34 is a logical move. Next moves were 44-40, 50-45 & 34-29. White follows his strategy and is building up a solid centre position. 9) T. Sijbrands – Kameraat


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White built a solid construction for surrounding the black centre. In order to perform this strategy white has to play 33-29 some time. This is the right moment for this move: 33-29! (following your strategy) 10) G. Valneris – A. Tolchikov Black has a weakness in his position, the gap on <13>. Therefore he should defend his position with 4-9 or 2-8 in order to close the gap. 1... 6-11? Allowed white to profit from this weakness by playing 2.32-28! Threatening 28-23 19x28 31-27. 2.... 19-24 3.31-27! 22x31 4.36x27 14-19 5.28-22 17x28 6.33x13 19x8 7.40-35 and white is winning a piece at the next move with 34-30. 11) B. Smeenk - J. Beeke A) White wants to put pressure on <24> with the power block. B) 1...2-7? 2.39-34 4-10 3.34-29 10-15 4.29x20 15x24 5.43-39! 18-23 6.39-34 White uses the power block for the second time. Black has no good defence left. C) 5.34-29 (5.47-41 10-15 6.34-29 17-22 7.29x20 22x31 8.37x26 15x24 9.40-34 12-17 10.34-29 16-21 11.29x20 21-27 12.32x23 19x46) 5...16-21! 6.27x16 17-22 7.29x20 22-27 8.32x21 12-17 9.21x23 19x48 10.16-11 6x17 11.20-15 with an endgame that isn’t clear. D) 4...17-22 5.34-29 22x31 6.37x26 (6.29x20 31-36) 6...14-20! 7.25x23 18-22 8.30x19 13x24 9.29x20 22-28 10.33x22 12-18 11.23x12 8x39 = E) 4.34-29 16-21! 5.26x17 12x21 6.29x20 21-27 7.32x21 11-17 8.21x23 19x46 (9.20-15 14-20! 10.25x5 13-19 11.5x28 46x5 -/++) F) 3.39-34 16-21! 4.27x16 17-21 5.16x27 22-28 6.33x22 24-29 7.34x23 19x39 -/+ 12A) The most relevant feature of this position is black having a dangling piece on <20>. This piece is inactive. Moreover it makes the 13/19/24 formation inactive. White has no weaknesses. He controls the right flank and has more space to play. B) A. Schwarzman – M. Borghetti 1.27-22! White takes more space. 11-16 2.22-17! 7-12 3.17x8 13x2 Black has left only one active piece. 4.32-27 2-7 5.37-31 7-12 6.31-26 12-17 7.44-40 Black is frozen out. He had to sacrifice a

piece and lost the endgame after 25-30 8.34x14 19x10 9.27-22 17x28 10.33x22 10-15 11.22-17 etc. 13) T. Goedemoed – P. Bouma blitz The opponent’s move 20-25 alarmed white not to be tricked! “20-25 is not a standard move, going to the edge, so does black want to trap me?” White wanted to play 46-41, but he checked the move for tactics. In a blitz game it is important to see the tactical ideas quickly! 1.46-41 (creating a 8 x 46 track to king!) would have been punished by the kingshot 1... 25-30! 2.34x25 15-20 3.25x14 13-19 4.14x23 22-28 5.33x13 8x46 B+. A logical move is 1.42-37 connecting all pieces.

14) G. Draaisma - D. Edelenbos Using step 1 of the thinking process should eliminate 38-32 as a serious move. 38-32? creates a huge weakness at <38>, so it must be checked on shots for black immediately! 1.38-32?? 18-22! 2.27x18 13x22 3.28x17 19-23 4.29x18 24-30 5.35x24 20x27! 5...20x49 would allow the stick move 6.18-13 49x12 7.13x4 ~. Now white must lose a piece without having any compensation for it. He resigned. 15) K. Thijssen - T. Teterina A classical position with weaknesses for black. Black has an edge piece on <25> combined with a weakness on <9>. White can use this weakness tactically by playing 27-22 now or later. In the game white immediately played 1.27-22? 18x27 2.31x22 12-18 3.36-31 18x36 4.34-30 25x34 5.40x9 26-31 6.37x26 10-14 7.9x29 36-41 and white got no more than a draw. White should have played a waiting move however: 1.48-42! Black has only one sensible reply, after which the forcing 27-22 is winning. Closing <42> turns out to prevent black from breaking through: 1...15-20* 2.27-22! 18x27 3.31x22 12-18* 4.36-31 18x36 5.34-30 25x34 6.40x9 26-31 7.37x26 36-41 8.33-29! 24x22 9.32-27 22x31 10.26x46 W+ 16) White has a centre attack, but the pieces behind the outpost on <23> are chain-locked. White has to take care therefore, especially for shots. So white has to defend this position, in order to not being trapped. In the game Sene – Mamina N'Diaye 23.40-35? was played. After 23... 20-24! 24.29x9 18x40 25.35x44 4x13! White had to lose a piece. 23.36-31? would have allowed black to make a forcing: 8-13! (threatening 4-9 & 20-24 +)


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24.40-35 20-24! 25.29x9 18x40 26.35x44 25x34 27.39x30 16-21 28.9x18 12x41 29.46x37 21-27 30.31x22 17x48 B+ The best move is the neutral waiting move 23.46-41. 17) F. Luteyn - W. Gao Thailand 2012 White has a right wing attack with several inactive pieces. Black is better, so white has to defend. Candidate moves are 42-37, 42-38

and even 39-33 is a possibility.

1.31-26? 22x31 2.26x37 is met by a kingshot: 25-30 3.34x25 14-19 4.25x23 12-17 5.23x21 16x47 -/++. The game was 1.42-38? 12-17 2.39-33 (2.29-23 20x29 B+) 14-19 3.35-30 19-23 4.40-35 17-21 5.31-26 22x31 6.26x37 21-27! 7.32x21 16x27 8.38-32 27x38 9.33x42 23-28 10.42-38 28-33 11.38-32 33-39 12.34x43 25x23 B+ After 1.39-33 14-19 2.35-30 19-23 3.42-37 3-9! White has to sacrifice a piece with 4.33-28 22x33 5.29x38 20x29 6.31-26 -/++ White can use tactics to defend: 1.42-37! 12-17 1...14-19 is met by 2.29-23! 19x30 3.35x24 20x29 4.40-35 29x40 5.35x44 18x29 6.27x7 W+. 2.39-33 14-19 3.35-30 19-23 and now the pint of white’s play is revealed, white takes a kingshot to the occupied square 3! 4.33-28! 22x33 5.29x38 20x29 6.30-24 29x20 7.27-22 18x36 8.34-30 25x34 9.40x9 3x14 10.37-31 36x27 11.32x3 The kings is caught: 20-25 12.3x20 15x24 but 13.38-33 leads to a draw. 18) P. Boonstra - H. Koning Black’s right wing is locked. Playing 41-37 or 34-30 would allow black to escape from the lock: 1.34-30? 25x34 2.39x30 17-22 3.26x17 24-29 4.33x24 22x42 5.48x37 11x22 = 1.41-37 17-22 2.28x17 2.26x17 25-30 3.34x25 24-29 4.33x24 22x31 5.36x27 11x31 2...21x12 =. 1.28-22 17x28 2.33x22 doesn’t yield a positive result either, since black escapes from the lock by playing 11-17 3.22x11 16x7 4.26x17 7-12 =. White should follow the strategy of keeping black locked. Candidate moves are 1.36-31 and 1.45-40. 1.36-31 allows black to activate all pieces: 13-18! 2.38-32 8-12 3.41-36 18-23 4.31-27 12-18 5.43-38 24-30! 6.35x22 15-20 7.28x19 17x37 8.26x17 11x31 9.36x27 37-41 etc. Best move is 1.45-40! connecting the pieces in the centre and the right wing. Black can’t continue with 13-18 now, because of 28-23!

W+. It is important that black can’t play 8-12 and 13-18, preventing him from connecting his pieces. White creates a dangling piece on <40> with 45-40! But this isn’t bad, since white doesn’t nee to play on his right wing anymore. He has enough waiting moves at his left wing, going to take <27> while keeping black locked. An example of what might follow: 1.45-40. 3-9 1...15-20 2.41-37 13-18 3.28-23 18x29 4.34x14 20x9 5.40-34 9-13 6.34-30 25x34 7.39x19 13x24 8.43-39 8-12 9.39-34 21-27 10.37-32 3-9 11.32x21 16x27 12.34-29 W+ 2.36-31 9-14 3.41-36 24-30 3...13-18 4.34-29 14-20 5.28-22!! 18x27 6.31x22 17x28 7.26x17 11x22 8.39-34 28x30 9.48-42 24x33 10.35x2; 3...14-20 4.34-29 W+ 4.35x24 19x30 5.38-32 30-35 6.31-27 35x44 7.39x50 +/- 19) A. Getmanski – J.P. Drost 1.30-25! 19x30 2.35x24 3-8? Black wants to change piece <24> but overlooks white’s intention: 3.25-20! 13-19 4.24x13 8x19 5.37-32 15x24 6.32-28 22x33 7.38x20 white breaking through.

Choose your move!

1) W. Sipma – A. Safonov In this building up phase white used tactics. He played a snare, provoking his opponent to take a kingshot, which is punished by a brilliant counter-shot. Wouter Sipma knew this idea from a blitz-game against Alexander Georgiev, who surprised Wouter with this snare. Wouter had to look for a couple of minutes to see the trap. Now he is awarded for remembering this trick, since Safonov must have thought his opponent made a blooper, since white played too quickly. The opening moves were: 1.32-28 20-25 2.31-27 15-20 3.27-22 18x27 4.28-23 19x28 5.33x31 14-19 6.37-32 10-14 7.41-37 5-10 8.39-33 12-18 9.44-39 7-12 10.33-28 1-7 11.39-33 17-22 12.28x17 12x21 And now white played the snare: 13.50-44?! 25-30? 14.35x15 14-20 15.15x24 19x50 16.31-26!! 50x17 17.49-44 17x50 18.26x17 11x22 19.38-33 50x28 20.32x1 and white won. 2) F. Luteyn – M. Koopmanschap White used tactics to follow his strategy: putting pressure on <24> with the help of a sacrifice. He played:


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1.27-22! 18x27 2.32-28 23x32 3.37x28 12-18 4.34-29 7-12 5.29x20 15x24 6.28-23 19x39 7.30x10 39-44 8.40x49 9-14 9.10x19 13x24 White is putting pressure on <24> again: 10.43-39 18-23 11.49-44 8-13 12.44-40 13-19 13.38-33 27-32 14.39-34 32-38 15.34-29 23x34 16.40x20 38x29 17.20-15 and white won. 3) J. van Kesteren – O. Dijkstra White should follow his strategy: Controlling both wings! Thisw is a best-move-situation, since white can force a win. He freezes black out by taking <25> under control: 1.34-30! 4-9 After 1...18-23 2.30-25 black has no good move left! 2.30-25 9-14 3.48-43! In the game 3.39-34?? 24-29! 4.34x21 11-17 5.21x12 13-18 6.12x23 19x50 B+ followed. 3...18-23 After 3...17-22 4.26-21 black is out of moves. 4.43-38 and black is (tactically) frozen out, since 13-18 is punished by 35-30 & 27-21 W+. 4) T. Sijbrands – C. de Jong In this building up phase white played the positional desirable move 38-33. He wants to develop piece 47 to <33>, so this is a logical way of building up the position. If white plays 40-34 first, after 10-15 38-33 black can change 24-29, so it is sharper to play 38-33 immediately. 5) M. Nogovitsina - K. Overes Tactics rule this psoition! There is a route to king with 34 x 5 ... White should have spotted the kingshot beginning with 32-28!! 6) A. Georgiev – Macadou N’Diaye (position form analysis) Black’s position is being surrounded and he has to defend. He can’t play 1... 18-22 2.29x18 and white makes a kingshot with 27-22 / 28-22 at the next move. 1... 15-20 is punished by 2.30-25 9-14 3.27-22 (or 3.28-22 first and then 4.27-22) W+ 1... 9-14 is met by 2.30-25! and the 27-22 threat is lethal. Changing back with 1... 17-22 2.28x17 21x12 also loses: 3.42-38! 1-7 (12-17 is punished by a kingshot: 27-21 16x27 32x12 18x7 29x18 13x22 37-31 26x37 48-42 37x48 30-25 48x30 35x4 +) and white plays two waiting moves: 4.47-41 7-11 5.41-36! After which 12-17 is still punished by the same kingshot and 11-17 is met with the breakthrough-shot 37-31 26x28 27-22 18x27 29x7 + (15-20 is still met by 30-25 9-14 27-22+). For this reason black has to play a waiting move: 1... 1-6! White has to make a decision then. 2.47-41 allows 9-14 since 27-22 isn’t

possible anymore. Therefore the main line goes like this: 2.48-43 17-22 3.28x17 21x12 4.43-38 6-11 5.38-33 12-17 6.33-28 after which black is still under huge pressure. Only sacrificing a piece with 26-31! gives chances to escape from losing:

6... 17-21? 7.30-2511-17 8.28-22! 17x28 9.34-30 23x34 10.32x3 21x41 11.47x36 W+ 6... 15-20 shouldn’t be met by 7.30-25 because of 18-22!! 8.25x3 22x24 9.3x21 26x17 =, but by the brilliant sacrifice 7.29-24!! 20x40 8.35x44 W+. The best defence is 6... 26-31! 7.27x36 (at 37x26 18-22 = follows) 17-21 and white gets a good endgame with 30-24 19x39 28x8, but black can still fight on with 9-13 8x19 39-43 etc.

7) M. Borghetti – M. Kroesbergen Black’s position is a mess. He has very little space and a dangling piece on <9>. White can sue piece <36> to take advantage from this. 1.39-34! Creates a threat: 47-41 34-30 30x39 25x3. Black can’t parry this threat and lost. 8) A. Schwarzman – A. Shaibakov White has a right wing attack. 1.46-41 isn’t a candidate move because of 26-31 37x26 13-19 24x22 17x46 B+. The normal move 1.33-28 allows black to change 25-30 24x35 26-31 37x26 17-21 26x17 11x24 =. After 1.44-40 10-14 white can’t go to the centre anymore: both 32-28 and 33-28 fail. White played the strong 1.36-31! Using black’s lack of active formations. Now white can go to <28> later, since the 26-31 shot isn’t available anymore. Piece <46> ids also activated by this move, so it’s positionally desirable to play 1.36-31. Black can’t go to <22>: 1.36-31 17-22 is met by 2.29-23! 20x29 3.33x24 18x20 4.27x7 W+, so the move is backed by tactics. The game was 1.36-31 10-14 2.44-40 2-7 3.33-28 17-22 4.28x17 12x21? Black should have defended 4... 11x22 5.39-33. Now 5... 6-11 is losing due to 6.32-28 11-17 7.37-32 26x37 8.42x31 with a deadly chain-lock. But


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black can sacrifice a piece playing 5... 25-30!! 6.24x35 13-19 with enough compensation for the lost piece. Of course this defence is hard to find, especially under time pressure. Therefore this was a best-chance-situation, which payed off in the game quickly: 5.39-33 11-17 6.46-41 7-11 7.41-36 Black has no space to play left. 17-22 is met by 29-23! W+. Black sacrificed a piece with 25-30 but in this case he doesn’t have compensation, and lost soon.

Comparing candidate moves 1A) In this sharp positionwith mutual outposts white has two candidate moves, 1.35-30 & 1.26-21. A move like 1.49-44 isn’t serious in such position, since it spoils the 38/43/49 tail and weakens base-square <49>. Black can immediately take advantage of this by the kingshot with 27-32 & 18-23. 1.38-32 fails due to 27x38 2.43x23 22-27 3.31x22 17x30 4.35x24 18-23 5.29x18 20x38 6.42x33 12x23 B+1. B) 1.35-30 can be met by the surprising (impossible move) 18-23!! 2.29x18 12x23 3.33-29 8-12 4.29x18 12x23 and the offered kingshot turns out to be met by a counter-shot: 5.38-33 20x38 6.43x1 11-17 7.1x29 28-32 8.37x28 22x33 B+. White can escape from this shot by playing 5.26-21!! 27x16 6.49-44 20x29 7.30-24 29x20 8.34-30 25x34 9.40x27 and white will win back the lost piece. 1.26-21! however gives white an advantage. Black can’t take backwards, since white makes a king at <4>: 1... 27x16 2.34-30 25x23 3.24-19 13x24 4.31-27 22x31 5.33x4 W+ 1.26-21 17x26 2.38-32 27x38 3.43x23 gives white a strong attack. Black’s pieces on <9 & 10> are dangling. 2A) Black has a solid centre attack with almost all pieces connected. Tactics will become important in this sharp position. 25-30 will give black a free move, so this is a move one should consider in looking for tactics. White has a fork on his left wing, restricting black’s space to play on this flank. The piece on <29> is in an awkward position, completely blocked and surrounded by black. B) White has to take care for all kinds of shots, so it is necessary to take your time! This is a crucial position for the outcome of the game, so white should take enough time to calculate!

It would be good if white left enough time to be able to calculate for 15 minutes or so. C) White can’t play several moves. You have to check this using the first step, looking for candidate moves. Moves that tactically fail need to be eliminated at once, before one is going to calculate lines with these moves! It will save you time and ... unnecessary losses. 2) 1.27-21? is punished by 25-30! 2.34x14 23x34 3.14x32 11-16 4.39x30 16x47 B+ 1.26-21? is punished by 25-30! 2.34x14 23x34 3.14x32 11-17 4.39x30 17x50 B+ 1.42-37 fails due to 19-24 and white has to make the awkward temp 27-21 to be able to make an exchange: 24x33 37-32 28x37 39x19 13x24 31x42 and with 24-30 (11-16? 44-39 & 34-30=) 35x24 20x40 44x35 11-16 black wins a piece. 1.42-38 19-24 doesn’t give white a good temp for making an exchange with 38-32 either, while 2.38-33 12-17 3.33x22 17x28 loses a piece for white. 1.43-38 is met by the brilliant move 11-16!! threatening 28-33 + 2.38-33 (2.27-21 16x27 3.31x33 25-30! 4.34x14 23x32 5.14x23 18x47 B+) 2...28-32 3.27x38 25-30 4.34x14 23x32 5.14x23 18x47 B+ 1.44-40 isn’t a success either, black wins by playing 28-32 & 25-30. Is there still a good move for white? Yes, this is why you have to look at all moves exploring if it is a candidate moves. As we warned you in ACID part 3 never forget to look at surprising moves! White has a hidden defence, using a gambit! 1.35-30!! 20-24 1...19-24 2.30x19 13x33 3.27-22 18x27 4.31x22 28x17 5.39x19 = 2.29x20 15x35 3.42-38! Thanks to white’s control over the left flank white will get his lost piece back! 3... 19-24 4.27-22 28x17 5.34-30 25x34 6.39x28 = 3) Black has to defend his position and make a draw: 1...14-19! In the game black played 1...13-18? After which white could have won using the gambit 2.24-19! 14x23 3.35-30 W+ 2.35-30 22-27 3.32x21 19-23 4.29x9 20x40 = 4) R. Boomstra - C. van Dusseldorp A) White has an attacking position with outposts at <27 & 28>. He has weaknesses on his baseline. White has enough formations in the Drenth-zone to play against the attack.


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Moves like 1.49-44? breaking the 38/43/49 tail or 1.47-41? are terrible, so they can be eliminated immediately. 1.38-32? 27x38 2.43x23 22-27 3.31x22 17x19 leads to a better position for black. 31-26, 46-41 and 30-24 are the candidate moves. B) 1.46-41 isn’t a logical move, since it weakens white’s left wing. It becomes less flexible and offers white no benefits. For example after playing 31-26 37-31 and 42-37 white can change back 37-32x42, but not if 46-41 is already played. The game could be 1.46-41 18-23 2.29x18 12x23 3.31-26 11-16! Black doesn’t allow white to play 33-29 and change 38-32x33. 4.30-24 4.33-29 28-33 5.39x19 13x33 6.38x29 27-32 7.37x28 22x35 B+1 4...7-12 5.33-29 15-20 6.29x7 20x40 7.39-34 1x12 8.34x45 13-18 with a better position for black. White can only hope for a draw. 1.31-26 threatening 38-32 + is more logical. The game could be 1.31-26 18-23 2.29x18 12x23 3.30-24 7-12 4.33-29 1-7 5.29x18 12x23 6.34-30?! 25x34 7.39x30 White plays an ‘impossible exchange’ but black can’t take the king with 23-29 8.24x33 38x48 because of 9.47-41!! 48x25 10.49-43 25x48 11.37-31 48x37 12.41x1 W+. 7... 8-12 (7-12? isn’t right) and after 8.38-32 27x38 9.42x33 28x48 10.30-25 48x31 11.36x29 the position is equal. White can also play 1.30-24 9-14 Or 1...18-23 2.29x18 12x23 3.33-29 8-12 4.29x18 12x23 5.38-32 27x38 6.42x33 etc. 2.24-20 15x24 3.29x9 13x4 4.33-29 8-13 =. So, white can choose from 1.31-26 or 1.30-24. 5A) K. Thijssen – N. Waterink The position is classical with a non-active piece on <5> for black. White leads 6 temps in development. = + 6. Both players have many formations. White’s 36/31/27 tail gives him the chance to launch a classical attack with 27-22x22. At the right wing pieces 25/30/35/40/45 give shape to a solid construction. It can be reinforced by transporting a piece to <34> creating the power block. White is more active, while black has a weakness, the non-active piece on <5>, so white is better. B) White can play 27-22 launching a classical attack or play 43-39 followed by 39-34 creating the power block. The first plan is more logical,

since the power block is aimed against the piece on <24> and then piece <5> is not so weak, but an extra defender of <24>: C) 1.43-39 10-15 2.39-34 17-21 (or 5-10) doesn’t yield a positive result for white, since there is no real pressure on <24>. The strategy with the power block doesn’t work here. 1.27-22! 18x27 2.31x22 is very strong. The outpost can’t be attacked with 12-18 because of 2... 12-18? 3.43-39 18x27 4.32x12 23x34 4.40x20 8x17 5.20-15 W+. 2... 10-15 as played in the game, is met by 3.33-29 23x34 4.40x20 15x24 5.22-18 13x33 6.38x20 with an invasion of black’s right wing. The end of the game was: 6... 19-23 7.20-15 17-21 8.43-38 14-19 9.25-20 8-13 10.30-25 W+ Black’s best move is 2... 23-29 3.42-37 but after the exchange 29-34 4.40x20 19-23 5.28x19 17x39 6.43x34 13x15 7.34-29 white has a superior position, leading 10 temps in development ( = + 10). It is an easy decision for white. He should play 1.27-22 18x27 2.31x22. 6A) Black has a right wing attack that isn’t supported by a strong centre. Black doesn’t control <23>. Black has an inactive piece on <6>. White blocks the attack. Pieces <26/31/36/38> keep black’s pieces behind the outpost under control. He has control over the right wing. B) White can successfully play against the right wing attack, since he has an initiative at the right wing. B) Some white moves fail:

1.49-44?? 22-28 2.31x33 13-19 3.24x13 12-18 4.13x22 17x50 B+

1.49-43 isn’t attractive because of 13-19 2.24x13 22-28 3.31x33 12-18 4.13x22 17x37 5.26-21=

1.38-33 27-32

1.42-37 has no clear function.

1.40-34! fits perfectly in white’s strategy. It is better than 40-35, since piece <35> isn’t active. Piece 40 is guided towards the centre, reinforcing white’s control on the right wing.

The game was 1.40-34! 11-16 2.34-29 14-19 3.42-37 19x30 4.25x34 13-19 5.34-30 6-11 6.29-24 19-23 7.30-25 23-28 8.37-32 28x37 9.31x42 22-28 10.25-20 12-18 11.20-14 17-22 12.24-19 11-17 13.14-9 15-20 14.9-4 20-25 15.19-13 18x9 16.4x13 W+ 7A) White’s left wing is fork-locked, which is compensated by a strong centre. White has


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more formations, but he should take care to keep enough space to play. B) Black can’t play 36... 21-27? 37.32x21 16x18 because of 38.28-23 W+. Black must choose from 36... 24-30, 36... 9-13 and 36... 9-14. It needs strong calculation to find the best move, spotting relevant tactical resources. 1) 37...24-30? (locking black at his other wing too, but giving op space) 38.31-27 8-13 39.36-31 12-18 40.33-29 40.48-42 7-12 41.33-29 9-14 42.38-33 12-17 43.42-38 W+

2) 37... 9-13? was played in the game, and white won using his formations: 38.31-27 12-18 39.48-42 7-12 40.36-31 12-17 41.33-29 24x33 42.38x29 19-24 43.29x20 25x14 44.42-38 14-19 45.38-33 19-23 46.28x19 17x28 47.32x3 21x41 48.19x8 26x37 49.8-2 41-46 50.3-26 37-41 51.2-24 41-47 52.24-15 47x29 53.15x47 46-5 54.39-33 5-23 55.34-29 23x45 56.44-40 45x38 57.47x29 W+

3) 37...9-14! 38.31-27 12-17! Black is using tactics. 39.48-42 is punished by a kingshot now. 39.48-43 14-20 40.36-31 8-12 41.22-18 12x23 42.27-22 24-30 43.33-29 21-27 44.32x1 23x41 45.29-24 26x37 46.24x13 with a better endgame for black. 8A) White has many moves that can be played: 30-24, 33-29, 50-44, 50-45, 49-44, 33-28x28, 33-28x27 37-31x32 and 36-31.

B) You have to choose the move that fits best in your strategy. It’s not about calculation now, but about logical thinking. Since black just changed piece <27> the most logical plan is to go there again, playing 36-31 and 31-27, with a nicely developed left wing. White will get a balanced position for a classical game, trailing in development ( = - 8). 19.36-31 17-22 is met by 20.31-27 22x31 21.41-36. In the game white played 19.33-28? 23x32 20.37x28 taking the centre, while it is not backed by other white pieces. After 20... 7-12 white changed 21.28-23 19x28 22.30-24 20x29 23.36-31 26x37 24.41x34 But black can no take the centre while leading in development (= --4). 24... 12-18 25.50-44 13-19 26.44-39 8-13 27.34-30 19-23 28.39-33 1-7 29.46-41 7-12 30.41-37 17-22 31.37-32 11-17 32.33-28 22x33 33.38x29 23x34 34.30x39 15-20

35.43-38 20-24 36.49-44 14-19 37.39-33 18-23 38.32-27 13-18 39.47-41 9-13 40.44-39 17-22 41.48-43 22x31 42.33-28 23x32 43.38x36 18-22 44.39-33 19-23 45.43-38 22-27 46.41-37 12-18 47.37-31 3-9 48.31x22 18x27 49.42-37 13-18 and white resigned.

Time managment

K. Thijssen – T. Harmsma

1.33-29 20-25 2.32-28 15-20

Black allows white to take a 2x2-exchange after which black has an edge piece on <25>. 3.28-23 19x28 4.29-24 20x29 5.34x32 14-19

6.39-33 10-14 7.44-39 17-21 8.32-28 5-10 9.37-32 11-17 10.31-26 7-11

= 10 minutes

These opening moves should be played fast. Now the first moment to think about the right plan has come. 11.41-37 11.36-31 would be met by 18-22 12.41-36 21-27 13.32x21 16x27 with a sound attack for black. White performs a better plan.

11...19-23 12.28x19 14x23 13.36-31! Black can't play 21-27x27 now (35-30 W+). The exchange black makes gives white a nice strategy.

13... 25-30 14.35x24 23-28 15.33x22! 18x36 16.39-33 10-14

17.50-44 1-7 18.44-39 21-27 19.32x21 16x27

Black takes a right wing attack, but it doesn't have good perspectives, since black is blocked by his own piece on <36>.

20.40-34 13-18


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= 15 minutes (for move 11-20) You should have spent no more than half an hour in total until now.

21.45-40 8-13 22.40-35 3-8 23.34-30

This building up phase should go pretty fast. White's plan is to take an initiative at the right flank, so he moves his pieces in this direction.

23... 11-16 24.39-34 17-21

25.26x17 12x21 26.30-25 7-12 27.34-30 6-11 28.33-29 21-26 29.24-20 27-31 30.30-24 11-17

= 25 minutes If you succeed in playing the first 30 minutes in 10 + 15 + 25 = 50 minutes you have an ideal time management. Now you can use your time efficiently for calculating in the hardest part of the game, the (late) middle game.

31.38-33 17-22 32.20-15 13-19 33.24x13 8x19

Until now white was building a strong position. Now he needs to calculate how to proceed. So white takes some time here.

34.29-24 19x30 35.35x24 2-8 36.43-38 8-13 37.33-29 14-19 38.25-20

White can't be satisfied with 38.29-23 18x20 39.25x3 12-17 40.3x21 16x27 so he changes back, continuing his strategy.

38...19x30 39.20-14 9x20 40.15x35 13-19

= 30 minutes The last 10 moves before the time control. White should have kept enough time to calculate in this crucial phase of the game. In reality white was in time trouble and this caused him to miss the winning line. In our scenario white has 40 minutes left for proceeding to the 50

th move.

41.29-24 19x30 42.35x24 18-23

43.49-44 16-21 44.44-39 The cross 37 / 38 / 42 / 47 / 48 gives white a solid defence. The piece on <46> is engaged in white’s strategy too. At the right moment white can stop the black attack by playing 46-41.

44... 12-18 45.24-20 4-10 46.39-34 22-28 47.46-41?

White should have kept his base piece on <46>, since now black transports piece <18> to <27> bringing rescue operations in play with 28-32 31-37 21-26 26x46 etc. 47.48-43! 21-27 (47...18-22 48.43-39 22-27 49.20-15 10-14 50.34-30 White keeps <46. on his spot, in order to freeze out black.) 48.46-41! is now possible, since 21-27 is already played. 27-32 49.38x27 31x22 50.43-38 with a huge advantage.

47...18-22 48.48-43 22-27 49.20-15 10-14 50.43-39 14-19!


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= 39 minutes Now 15-10 is met by 51... 28-32 52.37x28 23x43 53.39x48 31-37 54.42x22 21-27 55.22x31 26x46 =, so white accepted a draw. If white had left enough time he probably would have found the winning line easily.

B. Bies – A. Schotanus 1.32-28 17-22 2.28x17 11x22 3.37-32 12-17 4.41-37 6-11 5.46-41 8-12 6.32-28 16-21

7.31-26 21-27 8.36-31 27x36 9.26-21 17x26 10.28x 6 19-23

= 10 minutes

The opening is theoretical and should be played fairly quickly.

11.34-30 14-19 12.30-25 10-14 13.40-34 12-17 14.44-40 7-11 15.34-29 23x34 16.39x30 19-23 17.33-29 23x34 18.40x29 2- 8 19.45-40 4-10 20.40-34 13-19

= 25 minutes The opening led to a complex type of game. Therefore white needs to take some time to find a good strategy and thinking of tactics. Moves 11-20 should cost some 25 minutes.

21.49-44 8-13 22.44-40 20-24 23.29x20 15x24 24.43-39 17-21 25. 6x17 21x12 26.39-33 1- 7 27.50-45 12-17 28.37-32 7-11

29.41-37 17-21 30.33-28

= 25 minutes

Having played the first 30 moves in an hour time is good. You have saved some time for the decisive phase of the game.

30.... 21-27 31.32x21 26x17 32.28-23 18x29 33.34x23 19x28 34.30x 8 3x12 35.40-34 9-13 36.45-40 17-2237.34-29 11-17 38.40-34 17-21 39.34-30 21-27

40.30-24


160

= 25 minutes This phase is quite strategic and white doesn’t nee very deep calculations yet. Next phase will be decisive. You need time to be able to calculate. In the next phase you shouldn’t spend all your time already, since then you have only a minute for every move in the endgame and this isn’t enough time for making calculations without stress.

40... 13-19 41.24x13 14-20 42.25x14 10x 8 43.29-24 8-13 44.35-30 12-18 45.24-20 13-19

White could have won the game by playing 46.48-43 19-23 47.43-39 and black is completely surrounded. Sacrifices won’t help him anymore. Because of time trouble white missed this easy way to win.

46.20-15 19-23 47.37-32 28x37 48.42x31 23-29 49.30-25 29-34

50.25-20 34-40

= 30 minutes

White has left 25 minutes and 1 minute every move for the endgame. Unfortunately white went wrong in the decisive phase of the game and now the endgame isn’t winning.

51.20-14 40-44 52.15-10 27-32 53.38x27 44-50 54.31-26 22x31

55.26x37 50-39 Draw.

Cases of time trouble 1) Usually it is not wise to try to take advantage of the opponent’s time trouble. The lack of time should be a troublesome for the opponent, not for you. If you decide to play quicker the chance of making mistakes is huge. You should focus on playing the best moves and use your time for calculation. In the game white became nervous and played too fast. Black escaped with a draw easily. 2A) 50.26-21 would have been winning: 50... 13-19 51.24x13 18x9 52.27x7 16x36 53.29-23 28x19 54.7-1 W+ B).38-32? 16-21 3.32x12 21x41 4.12x21 41-47 B+ C) White should have trusted his own notation. The opponent could have forgotten to note down a move or worse could try to confuse his opponent. White should have taken some time for calculation and then play 51.37-32 drawing the game.

How much time would you take? 1A) Black has a strong centre position with all pieces connected and with many formations. White has an edge piece at <26> and few active formations. Black can try to play a left wing attack. He has strong pieces at <23, 24 & 25>. Piece <25> gives wing control. Edge


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piece <26> is weak, but piece <25> is strong. It also can advance to ,30> helping the planned wing attack. Black also leads in development by 4 temps ( = -4). So black has the odds. B) Black built a strong position and now it is time to make a crucial decision. Black has to look which moves are candidate moves and after that calculating the right move. Black can look at 17-22x22, 23-29, 24-30 and 25-30. All these moves need to be judged properly, so it will take some time to do this correctly. It would be wise to use about 15 – 20 minutes here. C) 1...24-30? looks nice at first sight, since white can’t play 2.33-29 23x34 2.28-22? 17x28 3.32x14 because of 34-39! 4.44x33 13-19 etc. B+. But black has to spot that white can win by playing 2.33-29 23x34 3.28-23!! 19x28 4.32x23 18x29 5.27-22 17x28 6.26-21 16x27 and white wins a piece playing 35-30 at the next move. So, 24-30 is no candidate move anymore. 1...24-29 2.33x24 19x30 3.28x19 13x24 splits the black position, so it is no candidate move ; After 1...17-22 2.28x17 11x22 white can defend playing 3.33-28 22x33 4.43-39 Therefore it is logical to look if going to <22> can be prepared by other moves, in order to minimize white's space. Black has to look at 23-29 and 25-30. 1...23-29 2.42-38 25-30 can be met by 3.27-21 16x27 4.31x22 18x27 5.32x21. Compare this with the lines after 25-30. 1...25-30! 2.43-39 23-29! It turns out that it is better to introduce 23-29 with the 25-30 move, since now black can use the 17-22x21x22 exchange, since white can't attack 32-28? A crucial difference with 1... 23-29 in favour of 1... 25-30! 3.42-38 17-22! 4.28x17 12x21! 5.26x17 11x22 6.45-40 19-23 7.40-35 6-11 with a winning position for white. White has only left one piece to play with. The ending could be: 8.44-40 11-17 9.40-34 29x40 10.35x44 17-21 11.44-40 13-19 12.40-34 30-35 13.34-30 35-40 14.30-25 8-13 B+

White has no better response to 1... 25-30:

2.44-39 is met by 24-29 & 17-21 B+

2.42-38 is met by 17-22! 3.28x17 12x21 4.26x17 11x22 reducing white’s space to play enormously. After 5.43-39 23-29 we get the same line as before. 5.45-40 23-29 6.40-35 19-23

gives white the same kind of problems, he is frozen out slowly.

2.43-38 is met by 30-35! Now 3.44-39 is punished by the breakthrough shot 35-40 24-30 23-29 19x30 17-21 11x44 while 3.27-22 18x27 4.31x22 23-29! (threatening 19-23 +) 5.44-39 16-21 gives black a winning position. So, white should play 3.45-40 after which black can go to <22> in spite of white’s 33/38/42-tail: 3... 17-22! 4.28x17 11x22 5.44-39 (5.33-28 22x33 6.38x20 is punished by 19-24 20x29 23x45 B+). 5... 35x44 6.39x50 24-29! 7.33x24 19x30 with a superior position for black!

2) This is a theoretical position. If you play an opening like this it is necessary to have some knowledge about this opening. It will save you a lot of time. If you don’t have any knowledge of this opening (Springer contra attack – see chapter about the opening) it will cost you much more time to find a good move. White has a choice between 30-24 and 39-33. You can also play the old-fashioned 38-33, but against strong opponents this isn’t the wisest of choices. If you have prepared the opening you can make a decision quickly. Also if you have knowledge of this opening you can make the move you want within a couple of minutes. 3) T. M’bongo – A. Georgiev White has a dangling piece on <40>, while his opponent controls both wings. One should recognize that both 1.42-38 and 1.36-31 lead to a lost position. After 1.42-38? 13-19 white will be frozen out. Playing 38-33 makes no sense, since white can’t attack 34-29 anyway, for black makes a breakthrough with 19-23 +. 1.42-38 13-19 2.38-32 17-21 leaves white with too little space to play: A) 3.36-31 3-8 4.31-27 8-13 B+ B) 3.28-23 19x28 4.32x23 21-27 5.23-18 3-8 B+ C) 3.37-31 26x37 4.32x41 3-8 5.41-37 8-13

1.36-31 loses also: 16-21 2.42-38 13-19 3.38-32 17-22 4.28x17 21x12 5.32-28 3-9 6.31-27 9-13 Since the normal moves lose, white has to look at the remaining candidate move 28-23. It turns out that white can defend himself in this case. After 1...17-22 white can make a draw quickly by making a breakthrough: 2.34-29 24x33 3.42-38 33x31 4.36x9 3x14 5.23-18 etc. =.


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Other lines also aren’t very dangerous for white: 1...24-29 2.23-18 13x22 3.34x23 17-21 4.23-19 3-9 5.42-38 22-27 6.37-32 26-31 7.32-28 31-37 8.19-13 9x18 9.28-22 27-32 10.38x27 21x32 11.22x13 =. So, white needs some calculation in this position, but it isn’t necessary to calculate very deeply. Judging 1.42-38 and 1.36-31 correctly will lead to the conclusion one should break out with 28-23 automatically. Between 5 and 10 minutes must be enough to find this move. 4) A. Mogilyanski – A. Gantwarg White surrounded the black attacking position. A candidate clue should be black’s last move 39... 13-18. The division of pieces isn’t good for black. Black’s position is bending towards his right wing of the board. White should look at all moves, also surprising moves to profit from this. In the game white played 40.34-29? Although later he did win the game, white has a better option. He should be smart enough to spot a sacrifice: 40.24-19!! 14x23 41.34-30. He doesn’t need to calculate all lines, which would be nearly impossible, but try to judge the position by calculation some logical lines. Finding a defence after the gambit is a task you should leave to black. White should take some 10 minutes finding and calculating the surprising gambit. We will give some crucial lines anyway to give you an idea of the possibilities of the position after the gambit.

40.24-19! 14x23 41.34-30 28-33 After 41...27-32 42.46-41 21-27 43.43-39 16-21 44.49-44 white has a winning position, for example: 32-38 45.42x33 27-32 46.41-37! (46.36-31 would be losing after 15-20, 23-29, 32-37 18x9 B+) 32x41 47.36x47 21-27 48.48-43 (avoiding shots!) 27-32 49.44-40 32-37 50.40-35 and black is tactically frozen out, since 28-32 is punished by 26-21, 25-20 30x8 W+.

42.30-24 22-28 43.46-41 Next analysis based on an newspaper article of Ton Sijbrands is nice for analysis after the game, but of course you can’t and needn’t calculate all of this. It is more important to judge the position correctly: black has problems making a draw. We still give this analysis to show you the complexity of the game.

A) 43...18-22 44.41-37 33-39 (44...12-18 45.37-31) 45.43x34 15-20 46.24x15 23-29 47.34x32 27x47 48.25-20 22-27 49.37-32 27x38 50.20-14 +/- B) 43...27-32 B1) 44.24-20 15x24 45.43-38 32x43 46.49x20 28-33 47.42-38 33x42 48.48x37 23-29 49.20-14 29-34 +/- B2) 44.42-37! B2a) 44...21-27 45.25-20 18-22 46.20-14 33-39 47.43x34 23-29 48.24x33 28x30 49.37x28 22x33 +/- B2b) 44...33-38 45.25-20 21-27 46.20-14 17-22 B2b1) 47.14-9!? 27-31 48.36x27 22x42 49.48x37 38-42 50.37x48 32-38 51.43x32 28x46 = B2b2) 47.37-31? 38-42 48.48x37 16-21 49.26x8 23-29 50.24x33 28x48 51.37x17 48x20 B+ B2b3) 47.26-21! 27-31 (47...38-42 48.24-19 42x31 49.14-10 23x5 50.43-38 32x43 51.21x23 18x29 52.36x7) 48.37x26 16x27 49.14-9 W+ 5) A. Georgiev – S. Kalpoe The position has not beenm built up completely yet, so there is no reason for deep calculation, White will just follow his planned strategy and build the position he likes, playing 38-33 / 42-38 / 49-43 with the idea to change to <29> reducing black’s pace to play. Black has a weakness: the gap on <9>. White will have taken about one minute or less for this move. The game went: 26.38-33 12-18 27.42-38 2-8 28.49-43 White is ready for 34-29x29. 28... 24-29 29.33x24 20x29 30.40-35 29x40 31.45x34 15-20 32.39-33 Threatening to play 33-29 etc. W+. 32... 20-24 33.27-22! 18x27 34.31x22 Black is lost. 21-26 is punished by the Dussaut sacrifice: 35.35-30 24x35 36.33-29 etc. W+ 6) A. Georgiev – M. Rentmeester White had made calculations in the phase before this already. At this moment white’s plan is clear. He plays 34-30x30 in order to


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take advantage of black’s future inactive piece at <9> or <15>. Classics is very good for white because of this. White also can still use the Olympic formation. Other plans aren’t attractive. White can wait one move playing 41-37, but that doesn’t make a difference. Playing 44-40? Is weak, sine after 10-15 41-37 6-11 white can’t do anything positive with black’s edge piece. Since white is just following a pre-conceived strategy, he plays 34-30x30 quickly. 7) D. Kasse – T. v.d. Hoek Black has a classical attack with an outpost on <29>. The position is very sharp, so black needs strong calculation. Black has to spot the tactical possibilities of his position. After 1...9-14! 2.35-30 8-12 3.39-33? black can make a brilliant shot: 3... 21-26 4.33x24 18-22 5.27x20 6-11 6.24x13 15x35 7.28x19 26-31 8.37x26 12-18 9.13x22 17x50 Black has to calculate the line until this point. It turns out that black will win in a 3 x 3 opposition in he main line: 10.19-14 35x44 11.14-10 11-17 11...44-49? 12.10-4 49x32 13.4-27 32x21 14.26x6 = 12.45-40 44x35 13.10-4 50-28 14.4-15 28-23 15.34-30 35x24 16.15x21 16x27 17.47-42 2-7 18.38-33 27-32 19.33-29 3-9 B+ 3.30-25 3-8 also looks good for black, since white has little space. 34-30 can be met by the Kung Fu shot 14-20x10 etc. To be able to spot the kingshot after 3.39-33 black has to take enough time, at least 12 – 15 minutes. 8) W. Martin – M. Langeveld White plays against a right wing attack. This is a best chance-situation. White should have spotted the 47-41 move before this position emerges. 1.48-42 20-24 2.37-32 11-16 3.32x21 16x27 4.42-37 23-28 gives white no advantage. 1.47-41 introduces the 37 x 6 / 8 track. In the game black played the logical 2-7? after which white can win a piece with the shot: 2.30-24! 20x29 3.25-20 14x25 4.35-30 25x34 5.43-39 34x32 6.37x8 13x2 7.31x33 W+1. Black should play 1... 20-24 but she has to see that 2.25-20 14x34 3.43-39 34x32 4.37x6 (4.37x8? 2-7 B+1) 12-18 7.41-37 12-18 is still a defence. White shouldn’t take too much time to play 1.47-41 leaving the problem to calculate the right defence to black. One shouldn’t use more than a couple of minutes here and go for his best chance with 1.47-41.

9) This is a crucial decision in a very sharp position. Fist black has to discover that there are two candidate moves:

Changing 14-20 25x14 19x10

The gambit 12-17 22x11 16x7 27x16 18-22

Black has to find out which of his candidate moves is best. Taking only a few minutes probably isn’t enough. Taking too little time could result in playing 35... 14-20? 36.25x14 19x10 too fast. 37.22-17? 13-19! 38.17x8 18-22 39.27x18 23x3 40.32-28 21-27 looks good for black, but white can also play 37.30-24! 29x20 first and then attack 38.22-17. Black can make a draw playing 38... 23-28 39.17x19 20-24 40.32x12 21x43 41.19x30 43-48, but the other candidate move is much better: 35...12-17!! 36.22x11 16x7 37.27x16 18-22 Black gets excellent chances to win the game, threatening with a breakthrough, for example: 38.46-41 22-28 39.41-36 13-18 (preparing 28-33) 40.31-27 28-33 41.30-24 29x20 42.38x29 23x34 43.42-38 19-23 44.38-33 20-24 45.31-27 14-19 and white is lost. In order to find the right move 7 minutes seems the right amount of time to take. The rest of the moves are much easier to find and can be played in 15 minutes. 10) White should build up his position without spending too much time. Centralising the position playing 39-33 and 44-39 is fine. 30 seconds is enough. Taking too much time will result in time problems later.

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The endgame is the most difficult part of our game. The introduction of kings makes things complicated. In spite of the reduced material the number of relevant possibilities increases. In this section we will elaborate on different aspects of the endgame. Endgames of a king and 3 pieces against a king and a piece will become more and more important when the level of games increases. This type of endgames is very hard to grasp. Even grandmasters often go wrong. Therefore it is useful to practice these endgames in order to learn general principles and get some experience with it. Because of the importance of the endgame for our game this section contains a huge amount of exercises.

S5. The endgame

King against 4 pieces King + 3 pieces vs King + 1

Black has more than 1 piece

Macro endgames

Endgames with 2 kings for the opponent

3 Kings versus 1 king 3 Kings versus 1 king + 1 piece Transition from late middle game to endgame Ambushing the opponent Tricky endgames Nut shells Solutions

S5. The endgame

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King against 4 pieces

1

H. Verheul – Z. Hanquing

This sharp endgame is from a game during the world championship junior girls 2012 (Hijken, the Netherlands). Black to move played 1...29-12? 1A) What would have been the winning move for white? Black could still have defended this position, although the defence is very complicated.

1...29-42!

B) How does black make a draw after 2.39-34? C) How does black force a draw if white plays 2.22-17?

2.22-18 42-37!

There are two (serious) possibilities to continue, but black always can force a draw.

3.18-13 37-48 4.39-33 48-42 5.33-28 42-37 6.28-22 37-31

7.22-18 31-27!

All white’s pieces are fixed! D) How does black make a draw after 8.16-11? E) How does black make a draw if white plays 8.25-20?

We go back to the second diagram and study the second possibility for white.

3.39-34 37-19! 4.25-20 19-8!

F) Which silent move fixes all pieces if white plays 5.20-15?

5.20-14 8-26

Planning to attack pieces from behind.

6.14-10 G) Try to find how black makes a draw with the help of a few forcing moves!

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2

I. Presburg

1.8-2 7-12 2.2-19 32-38 3.19-23 12-17 4.23-28 17-21

The white king kept on attacking pieces in order to create a vulnerable piece on <21>. Now the white king – as often is the case in this type of endgame – has to make a silent move. The king is not attacking nor threatening anything, but the opponent can’t make progress.

What is the right move for white to play now?

3

White forces a draw by two forcing moves and a silent move. How should he proceed?

4

G. Havaert

1.7-2 20-24 4A) Why doesn’t 2.2-16 32-37 3.16-38 yield a draw?

2.2-11! 24-29 3.11-39 There are more continuations that lead to a draw.

3...19-24 4.39-11! 29-34

B) How does white force a draw?

5

1.7-2! 30-35

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167

A) Show how white forces a draw after 1...30-34?

2.2-8! There are two lines: 1) 2...21-26 3.8-19! 35-40 4.19-35 40-45 5.35-44 22-27 6.44-49 27-31 7.49-32 B) Explain why this is a (strategic) draw. 2) 2...21-27 C) How does white force a draw now?

6

White can force a draw. He has to attack twice and after that play a silent move twice! Try to find the drawing line.

7

S. Klomp The intention of the author was to have white win the game, but it turns out that black has an unexpected defence...

1.4-27 This looks winning, since black has to sacrifice his piece and play with his king against a king + 3 pieces... A) How is 1.45-23? punished?

1... 26-31! 2.27x36 45-23 3.32-27 23-37!

4.44-40 B) How does black force a draw after 4.39-33? C) How does black force a draw after 4.39-34?

4...37-48 5.39-33 48-42 6.33-28 42-38 7.27-22 38-24!

White has to respond to the 24-19 threat.

8.28-23 24-35 9.40-34 35-44 10.22-18 44-49

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168

11.23-19 D) Show the last moves of the forcing!

8

Black can defend in spite of three pieces less... Show how black forces a draw after 1.8-3.

9

White forces a draw!

10

L. Sekongo – P. Oudshoorn

How should black to move have proceeded?

11

G. Burleson – R. Kemnaad

Which is the only good move for black to play?

12

White forces a draw!

S5. The endgame

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King + 3 vs King + 1

1

S. Lochtenberg – R. Keller

White was to move and played 1.9-4? (in reality it was the 67

th move of the game)

White still could have forced a draw, but this is quite hard to spot! A) How can white force the draw after 1.9-3! 21-26 2.3-20! 28-33 3.20-25! 7-11 4.25-9!! 33-39? B) After 1.9-4 black has only one winning move. Which move should he play and why?

2

I. Milkowski – I. De Jong

In order to be able to become dominant white has to conquer the 6/50 trictrac-line. It turns out that black is still able to defend, keeping a draw.

1.23-45 39-50 2.38-32 50-33 3.45-50 Black played 3...33-29? Now, after which white can win the endgame. He should have played 3.. 33-24! A) How can black force a draw after 3...33-24 4.32-28?

The game continued:

3...33-29? 4.32-28 29-18 5.28-22 18-45

White played

6.50-28? 45-50 7.26-21 Because of the awkward position of piece <21> white can’t win. After 7...50-45 8.22-17 45-18 the players agreed on a draw. B) Show how white should play in the last diagram.

Earlier in the game this position emerged on the board. We now understand that 1.32-27? 44-50 objectively is a draw. C) How should white have played in order to win?

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3

W. Sipma – A. Chizhov

White has defended a long endgame. White has to play the 70

th move, which turns out to

be a crucial moment in the game. White can still hold a draw, but needs to proceed very precisely. Players had 1 hour and 20 minutes plus one minute every move for the game. In this phase, players have to calculate with only few minutes left on the clock. This constant pressure makes the defence even harder. White should have played 1.31-9! A) How does white make a draw after 1...33-47? Our analysis continues 1...11-16 2.9-25! This move isn’t easy to find. 2.9-31? 33-29 3.31-26 29-47! Is losing. Black can advance with piece <16> or <32> at the next move. Now piece <32> can’t advance: 2...32-37? 3.25-14 33-28 4.43-39 =. B) How can white force a draw after 2...16-21? C) How can white make a draw after 2...23-28? We see that the point of white’s moves is that he prevents black pieces from advancing to a second king. Black’s king has to stay on the 15/47 diagonal.

2...33-29 3.25-3! If black plays something like 3...29-15 white repeats the moves with 4.3-12 15-29 (or 23-28 12-17 15-33 17-26!) 5.12-3! White needs to play precise: instead of 5.12-3 he shouldn’t play 5.12-26? 29-47! and white can’t stop piece <32> from advancing. We’ll return to this position later.

If black plays 3...29-47 4.3-26 black can’t make progress. D) How does white continue after 4...47-15? The game was: 1.31-26? 11-16? Black should have played the winning 1...33-47! E) How does black win after 1...33-47 2.26-48 11-17! 3.48-26?

2.26-12! 33-29 2...23-28 3.12-26 leads nowhere.

F) Does white have to play 3.12-3 or 3.12-26 in order to hold a draw?

4

R. Sloot – A. Schotanus

Black ‘s pieces can make a catching construction, but are vulnerable at the middle of the board. Therefore white can hold a draw.

1.10-4 A) Why is 1.10-5 losing?

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171

1...43-16 2.4-15 18-23 3.15-4 13-19 4.4-36

Black can't make progress immediately. B) How does white force a quick draw after 4...23-29?

4.16-11 5.36-27 11-6 6.27-49

C) How is 6.27-38? punished? D) How is 6.27-21? 17-22 7.21-8 punished? As a matter of fact, 6.27-21? 17-22! is winning for black: 7.21-49 23-29 8.26-21 22-28 and the black pieces can’t be stopped.

6...19-24 7.49-32 23-29 8.32-38 Blocking the black pieces, while threatening 38-21-8 =.

8...17-22 9.26-21! 22-28 10.38-49 29-34

E) Show the last moves with which white forces the draw.

5

This is an important endgame to know. White reached a winning position.

He should build a catching construction in order to chase black away from the main diagonal. A) Which moves is white going to play? Draw the catching construction in the diagram:

A. Georgiev – K. Thijssen

White has just played 42-38!, taking advantage of the passive position of the black king. Black (to move) could have prevented white from building the key position. White wants to play 43-49 with the threat of 15-10 & 20-14. Therefore 1...16-21 2.43-49! is losing Black has only one good move: 1...28-23! so that white can’t play 43-49 because of 23-29 38-32 29-23 etc. =. After 2.38-33! black has to be active again: 23-12! (23-41 is the only other move that doesn’t lose) B) How does black force a draw after 3. 20-14? The game was: 1...28-23 2.38-33 23-19? 3.33-29? C) How could black have escaped with a draw, attacking the white pieces helped by a sacrifice?

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172

D) How could white have won, building a catching construction is quickly as possible?

6

G. Boom – V. Doumesh

With only one king and the opponent holding the main diagonal, it usually is a draw.

1.24-20 37-42 2.1-29 42-37? A) How should black force a draw? Since black kept playing on the main diagonal, white can build a catching construction.

3.20-15 37-14 4.29-45 14-19 5.33-29 19-14

B) How does white force the win?

7

H. Twijnstra – T. Goedemoed Analysis (black to move)

Black (to move) should proceed very cautiously. He wants to get a second king, but he needs to protect his pieces first! A lot of patience is needed!

1...22-28 2.7-1 9-13!

If black is impatient and races to king with 2...28-32, white can force a draw. A) How does white force a draw after 2...28-32?

3.1-34 28-32 4.34-48

4...14-19! 4...32-38? allows white to escape with a draw: 5.48-31 13-19 6.31-26! (5.48-37 13-19 6.37-26 is also possible) Threatening 26-3 15-20 3-8 etc. = 6...19-23 7.26-48!! 23-28 B) How does the forcing continue? C) Why is 4...14-19 such a strong move? 5.48-26 allows black to advance his piece to king. D) How is 5.48-26 32-38 6.26-37 19-24 7.37-19 punished?

5.35-30 19-23! 6.30-25 13-18 7.48-26 23-28 8.26-48 32-38

9.48-26

One would think that it is time to go to second king now, but still patience is required!

E) How can white force a draw after 9...38-43?

9...28-32 10.26-48 18-22 11.48-39 22-27 12.39-48

F) How does black finish off the game?

S5. The endgame

173

8

I. Kuperman – N. Mistjanski

White has to take care black doesn’t get two kings. He must stop one of the black pieces. Analyse the position in order to find out if white has to play 2-16-49 or 2-24 (32-37) 24-47.

9

A. Scholma – P. van Harten

Try to judge this position! Can white defend it or is he lost? Analyse the position for 10 minutes and then try to make a judgement!

10

T. Sijbrands – S. Koopman How did white win quickly?

11

T. Sijbrands – E. van Hierden

1.30-25? 1-18!

White should not have allowed black to control the 4 / 36 diagonal.

2.28-41

2.30-25 18-36 will be a draw like in the game.

2...18-22 3.33-29 22-44

Threatening 16-21 =.

4.41-32 44-22 5.25-20 22-9 6.20-15 9-18 7.29-24 18-13

8.32-19 13-9

9.15-10

A) How should black force a draw now? B) Which move would you advise white to play (at the first move in the first diagram)?

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174

12

O. Dijkstra – O. Lognon

The white king blocks pieces 23/29. Piece <14> is the vulnerable piece for black, giving white the chance to hold a draw. But defending this endgame is very hard! Black to move has two options to chase away the white king and remove the block. We will first look at the plan 33-17 (threatening 17-12 +) 1-6 17-3, see next diagram:

1.6-50! 1.6-44? is losing due to 29-34 2.44-50 2.44-49 23-28! and black will become dominant and wins. 2...23-29 3.50-45 A) Why is this move obliged? B) How does black catch white’s king on the trictrac now?

1...29-34

The position after 1...3-26 2.50-44 26-42 3.44-50 29-34 4.50-44 42-24 emerged in the game.

White can defend with precise play: 5.44-17! 34-40 6.17-12! 24-29 7.12-26!

1) 7...40-45 8.26-37 14-19 9.37-26 (threatening 26-8 =) 29-40 10.25-20 = 2) 7...40-44 This is how O. Dijkstra - O. Lognon went. The game was 8.26-37? 14-19 9.37-26 44-49! and piece <8> is covered nicely (10.26-8 29-40 B+), so black is winning. White however missed the draw by forcing a repetition of moves. C) How could white have forced the draw?

2.50-44

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At 2...23-29 white can’t attack piece <14> immediately, but he can force a draw in another way. D) How does white have to force the draw?

2...3-8 3.44-6

E) Which strong move does black play if white goes to <50> playing 3.44-50?

3...8-24 After 3...8-26 4.6-1 23-29 5.1-7 black’s pieces are blocked again.

4.6-17! 4.6-11? 24-2 5.11-16 23-28 6.16-38 34-40! B+ We’re back at the game-position!

4...34-40 5.17-12 24-29 6.12-26 29-24 7.26-12 24-29 8.12-26!

We saw that 40-44 is still a draw. Therefore black can’t make any progress.

8...23-28 9.26-37 29-23 10.37-26 23-29 11.26-37 29-23 12.37-26 Draw.

13

Hoofdlijn magazine

This position once more shows the importance of protecting your pieces well. An analysis from Hoofdlijn claimed that white can win playing 1.28-22? But this move isn’t patient enough. Black can force a draw by attacking white’s pieces: 1...49-43! A) Show how black forces a draw after 2.22-17 43-25 3.17-12. B) How can black force a draw after 2.41-36 43-25 3.22-18.

C) Which is the right move for white (in the diagram position)?

14

H. Tangelder – Fazilov

Which move would you play (with white to move) and why?

15

Z. Palmans

It seems that black can always make a draw by attacking pieces and winning one of them. How can white win?

S5. The endgame

176

16

F. Hermelink

In order to win white needs a trick. How can he win?

17

H. Jansen – A. Presman

White forced a nice win, catching the black king in a couple of moves.

18

C. Blankenaar

How can white win if black goes wrong, playing 1...10-23?

19

Blonde

How can white win quickly?

20

K.W. Kruijswijk

White forces the win helped by tactics!

21

N. Michanski – A. Petuchov

White decides the game within a couple of moves!

S5. The endgame

177

22

L. Schut

How does white catch the black king?

23

G. de Bruijn

White wins helped by tactics!

24

C. Blankenaar

How can white catch the black king in a web?

25

Kovalev

Black will get two kings, but white catches them both!

26

L. Schut

Black will attack <44> but white still wins!

27

K.W. Kruijswijk

White to win! Hint: First, piece <35> must be prevented from going to <45>.

S5. The endgame

178

Black has more than one piece

1

E. van Dusseldorp – S. Pryor

How should white continue in order to win the game?

2

I. Weiss

White wins using tactics, catching the black king in a web.

3

C. Benenson

White wins using tactics!

4

I. Weiss

White can catch the black king in a web with his three kings. Hint: The first move is 1.39-11!

5

Galachov – A. Georgiev It is very hard to win if the pieces of the opponent are on both wings. Black can’t win analytically, but Georgiev took his best chance:

1...6-11 2.49-40 2.30-25 would be sufficient to draw: 2...11-17 3.49-35 39-43 4.25-20 42x15 5.36-31 White sacrifices and advances with piece <36> in order to make contact with the black pieces. 5...43-49 5...15-33 6.35-8 17-22 7.8-26 22-28 8.31-27 = A) How does white force a draw now?

2...11-17 3.40-35?

White should have played 3.40-45! 39-43 3...17-22 4.45-50 =

S5. The endgame

179

4.30-24! 42x20 5.36-31 White wants to create the 1/17 tag with his king at the 1/45 diagonal. 5...20-14 6.45-50 17-21 7.31-26 21-27 8.26-21 27-31 9.21-17 31-36 10.50-45 =

3...17-22!

B) Black is threatening to play which move? White has to sacrifice piece <30>:

4.30-24 42x20! The king should control <3>! C) How does white force a draw after 4...42x15?

5.35-13 22-28 6.36-31 39-43! Black can’t play 6...20-3? yet, since white simply draws with 7.13-19 28-33 19-24 =.

7.31-27 20-3

Black will get a second king and become dominant.

6

Borkov – A. Georgiev

White can still defend this endgame. He should find a way to stop piece <35>.

Can you find the right plan for white?

7

J. Goudt – A. Georgiev White is to move. How would you defend this endgame?

8

T. Tesselaar – H. v.d. Zee

White played 1.31-27? A) Why is this not a logical move?

1...35-44! B) White now wanted to force a draw playing 2.27-22 & 16-32 923-29) 32-38. Why does this plan fail? C) Which move would you advise white to play (instead of 1.31-27?)

S5. The endgame

180

2 kings + 2 vs king and pieces

1

A. Tolchikau – A. Ivanov 1A) Hoe can black to move win the game quickly?

1...49-38? 2.41-37 8-12 B) How would 3.37-26? be punished?

3.37-48 C) Which move do you advice black to play (without deep calculation)?

3. 38-33? D) How can white force a draw now?

2

A. Georgiev – A. Schwarzman

White is going for a second king, while trying to prevent black from getting two kings.

1.13-8? 2A) How can black force a draw now?

B) Try to explain why 1.13-9 is better. The game was:

1...27-32? 2.8-2? 32-38? C) How did white force the win?

3

A. Kosior – F. Luteyn

Black to move should consider white’s intentions. The only way white could possibly escape from losing is playing 24-19 & 19-13, getting a second king. How should black play to prevent this escape?

4

B. Neven – T. Le Quang

1.4-22? 32-21 2.22-44

A) How can black force a draw now? B) How should white play to win?

S5. The endgame

181

5

Scouppe + <26>

We see the Scouppe endgame with an extra piece for black on <26>. White first has to get this extra piece under control. A) 1.29-12? would allow black to force a draw. How?

1.29-34 46-19 2.34-48 19-28 3.1-6 28-23 4.48-39

After 4...23-19 5.39-17! white has the right catching construction. Black has to leave the main diagonal (19-5 38-32! W+) after which white takes over the control of the main diagonal and advances his piece to third king.

4...36-41 5.47x36 23-18 6.39-48 18-23 7.6-50 23-19 can be won by white in a couple of moves. 8.38-33 19-23 9.48-43! Now the black king can’t be on a wild square anymore because of the 36-31 43-32 shot. 9...23-5 10.43-49 and black has no safe square anymore.

4...23-5 5.39-17! 26-31

B) How does white reduce the endgame to a standard Scouppe?

6

R. Clerc - T. van de Meerendonk

Piece <47> has advanced to third king in this game. White still has work to do, catching the black king. Guess which was white 101

st move of this

game!

7

Opposition 6/1

A) Why would 50-22? spoil white’s winning endgame? B) How can the black king be caught in the 3/25/48/26 quadrant quickly?

S5. The endgame

182

Macro endgames

1

Kalmakov – Georgiev How did black win brilliantly after 1.34-39?

2

A. Getmanski – A. Georgiev

A) How should white play in order to keep the draw?

67.44-40? 25-39 Since white gave away the 6/50 diagonal, black has got a winning position.

68.40-49 29-34 69.49-38 23-29 70.21-16 39-50 71.38-47 50-6 72.47-42 34-39 73.42-48 29-34

74.48-26 39-44 75.26-48 B) How did black finish off the game?

3

R. Heusdens – P. Teer

Black can force a draw by playing 1...15-20! 2.25x14 50-28 3.32x23 21x41 4.31-27 41-47 5.38-32 47-36 = A) Why does the immediate king sacrifice 1...50-28 2.32x23 21x41 fail? The game was: 1...50-17?! White took his best chance by catching black’s king. The remaining position is still a draw, but there is only one escape route. Without knowledge of this position it is hard to find the draw.

2.27-22! 17x47 3.2-24 47x20 4.25x14 15-20 5.14x25 11-17 6.32-28 17-22 7.28x17 21x12 8.25-20 12-18 9.20-14 18-22

10.14-9 22-28 11.31-27

The crucial position. Black went wrong by playing 11...28-33? B) How could black have forced a draw? C) How does white win after 11...28-33?

S5. The endgame

183

4

Cerberus – TD King

A game between two computer programs showed some jewels of tactics…

1...44-50!

A) How does black punish 2.24-15?

2.41-37 50-39 3.24-15 B) Black caught the white king in a special way. Can you find the brilliant win?

5

N. Gulyaev – I. Kirzner How can black win quickly?

6

R. Heusdens – K. Thijssen

White finished the game with a brilliant shot! Show how!

7

K. Dijk - K. de Bruin How could black to move have finished the game with a nice shot?

8

H. v.d. Heuvel - C. van Leeuwen

How did white punish 1...26-17? in a beautiful way?

S5. The endgame

184

Endgames with 2 kings for the opponent (5 x 2)

O. Drenth – H. v.d. Zee

1A) Judge this endgame! B) Why shouldn’t white play 5-14?

R. Vipulis – G. Jansen If white sacrifices his piece black has a theoretically winning position. But the position is winning for black anyway. 2A) How did black both white kings after white played 1.14-25?

B) Which move forces a quick win after 1.14-46? C) How does black win after 1.14-3 15-42 2.3-14 42-48 3.14-46 48-25 4.46-23?

W. Wesselink – O. Dijkstra

3) Black is to move. How do you judge this position?

If white has only one piece behind the main diagonal he can still win. We will investigate at the key positions in this type of endgame.

4 Black to move

4A) How does white catch both kings after 1...46-23? B) How does white catch both kings after 1...46-14? C) If white is to move, he simple waits a temp. Which move do we mean?

S5. The endgame

185

5

Now one black king has left the main diagonal and is in the <2/16/49/35> quadrant. White wins like this:

1.22-27 46-5 2.6-1 2-35 5) How does white catch the both kings now?

6

1.22-27 46-14 2.27-36 35-2 3.36-27 2-35 4.6-1 14-46

5.1-45 46-5

6) How does white catch both kings now?

7

A. Georgiev – R. Boomstra

This endgame with two pieces behind the main diagonal is a draw analytically, but white can try some tricks. In this case black also had an extra piece on <36>. It’s a complicated matter. How did white win after black played 46-19?

Alexander Georgiev

Now we will look at the situation in which black’s kings control the trictrac-zone. How to win with 5 kings is already shown in ACID part 3. Now we discuss situation in which white has one or two pieces behind the trictrac-zone.

8

M. van IJzendoorn – F. Amirkhan

How does white win quickly?

S5. The endgame

186

Also with two pieces behind the trictrac white can build a winning catching construction (shown by W. Wesselink). 9A) Where do you put the white kings (see diagram)?

9

W. Wesselink

Diagram in which the 3 kings should be

put at the right spots!

With an extra piece on <16> white can only win if the piece on <27> is still at <36>. B) How can white win with an extra black piece on <16>? White’s piece should be on <32 & 36>. Where to put the three white kings, so that black has to sacrifice his piece (after which white wins with the Wesselink position)?

Put the three kings at the right spots!

10

R. Keller – C. Suyk

How did white win after the played 1...3-17?

S5. The endgame

187

3 Kings versus 1

1

2

3

4

All exercises: white forces the win!

5

6

7

8

S5. The endgame

188

9

10

11

12

13

W. van der Kooij – E. Torn

The game continued: 1...37-23 2.4-27 23x45 3.35-30 25x34 4.27-43

Black agreed on a draw in this position, but he could have won in the 3 against one endgame, even though one of the 3 pieces is only a man (and not a king)! How could black have won?

14

M. van Gortel – J. Schoenmakers

White forced a winning 3 against 1, using the scissors!

S5. The endgame

189

15

A. Shaibakov – W. Sipma

Black wants to use the 24/34 tag to make a draw.

1.7-1? (1.7-2? 49-35 =) is met by 44-49 2.1-6 49-32 and black can always change 24-29 with a draw. White could have forced a winning 3-against-1 endgame (although one of the pieces is not a king but a man).

1.26-21! 44-28

1...44-49 is met by 2.18-27! covering <32> so that black can't use the 24/34 tag. 2...49-44 3.7-1 44-28 4.27-38 W+

2.7-2!! 28-32 3.2x35 32x16

Show the rest of white’s winning strategy!

16

P. Steijlen - F. Andriessen It appears that black to move can force a draw:

1...8-19 2.28-22 19-13 3.22-17 13-8 4.17-11 8-2

White can’t prevent black from going to an endgame of a king against two kings and a piece. But white can still win this endgame! Show how!

Alexander Georgiev playing games simultaneously

S5. The endgame

190

3 Kings vs King + 1

1

This is a famous endgame composed by Leo Springer, inspired by an endgame of Cornelis Blankenaar.

1.46-41! 47-15 1...21-27 is met by ...... After 1...21-26 white plays ......... and the black king is always caught.

2.37-14! 15-47 2...15-42 is met by ................. 2...21-27 is met by .................

3.14-19! 47-20 3...21-26 is met by ..... 3...47-15 is met by .............

4.19-30!

4...21-26

4...20-42 is met by ................. 4...20-25 is met by ................. 4...20-15 is met by .................

5.30-43! 20-3 5...20-24 is met by .................

6.41-37! 3-17 6...3-12 is met by .................

7.37-46! 17-6

7...17-3 met by ............... 7...17-50 is met by ...............

8.43-32!

and black’s king is caught at the next move!

2

C. Blankenaar

S5. The endgame

191

Cornelis Blankenaar from the Netherlands was a brilliant endgame composer. He was a real master in compositions with 3 kings against a king and a piece. Try to find out how white wins, using tactics! In the end the black king is locked in the 4/15/47/36 quadrant. Compare exercise 2 from the 3 against 1 – section.

3

C. Blankenaar

Without the piece on <16> this position would be only a draw. With the help of tactics, using piece <16>, however, white is able to catch the black king, who can’t escape from the 3/25/48/26 quadrant. White uses two tactical means:

The scissors ()

Using <16> for a shot

1.14-41!

A) How does white win after 1...16-21 2.41-32! 26-48 3.3x26 48-30

1...26-48 2.3-25 48-26 3.5-19

B) White is threatening to play .............

3...26-31 4.41-36 31-42 5.36-47 42-31 6.25-3

A key position in this endgame. Black can’t play at the 4/36 diagonal. C) How is 6...31-4 punished? D) How does white meet 6...31-22 or 6...31-18? E) How about 6...31-27?

F) And finally: how to win after 6...31-48?

6...31-36 7.19-10

G) How to force the win after 7...36-31?

9...16-21 8.3x26 36-18

H) How does white win now?

We didn’t show all variations, but only the main idea to win. White needs to go to the key position shown in the second diagram. We give an example of another way that leads to this key position: 2...48-42 3.41-47 42-31 4.25-3 31-48 5.5-32! 48-26 (5...48-31 6.32-19 with the key position) 6.32-28 (white waits a move, after 6...26-48 7.3-25 white wins with the scissors) 26-31 7.32-19! with the key position!

4

T. Goedemoed

White to play and win!

S5. The endgame

192

5

C. Blankenaar

1.38-15! 28-32 A) How does white win after 1...41-46? 2.15-47 41-46 3.47-36! 46-37 B) Which move follows if black plays 3...32-37?

4.34-48 32-38 Otherwise black’s king is caught.

5.48x26 38-43 6.36-27 43-49 C) How is 6...43-48 met?

7.27-16 49-44

D) How should white continue?

6

Cosmos

1.14-3!

A) Which is the most important quadrant in this endgame?

B) How does white catch the king quickly after 1...16-21?

1...26-48 2.3-25

The black king can’t go to any wild square, because of a 2-11 shot. So black’s king should go to the edge.

2...48-26 3.2-7 26-3

C) 3...16-21 is met by .....

44.1-6

Now black has more choice, since he can also go to wild squares. D) After 4...3-8 white finishes the job quickly. How? E) 4...16-21 is met by ....

4...3-21

S5. The endgame

193

4...3-26 5.7-1 26-3 will lead to the same position as in the main line.

5.7-1 21-3 F) How is the black king caught after 5...21-49?

6.6-33 16-21 G) 6...3-26 is met by ....

7.1-40!

A brilliant, surprising move! There are three lines in which white wins nicely. Try to find the winning line after these 3 moves of black! H) 7...3-8 I) 7...21-26 J) 7...21-27

S5. The endgame

194

Transition from late middle game to endgame

1

A. Scholma – W. Sipma

White has to defend a worse classical position.

50.39-34 23-29 51.34x23 17-22 52.28x26 19x39 53.27-22

A) How does black win after 53.27-21? 16x27 54.32x21 39-44 55.21-17?

53...24-29 54.22-18 39-44 55.18-13 44-50 56.13-8?

A logical move, but white should have defended playing 56.26-21 16x27 57.32x21 29-34 58.35-30! and white can’t win.

56...50-45!! 57.8-2 B) Which great shot did black perform? C) How does black win after 57.32-28?

2

J. Weijman – K. Thijssen

White is in an ugly position. He can still defend however.

A) Can you find the move that can rescues white? In the game 56.30-25? was played. Now black has to choose:

24-30 taking the most pieces

24-29 going to king fastest The game was: 56...24-30? 57.35x24 19x28 58.26-21 17x26 59.16-11 28-32 60.27x38 12-17 61.11x22 18x27 62.25-20 23-28 63.20-15 28-32 64.38-33 32-37 65.15-10 37-41 66.33-28 41-47 67.10-5 47-29 68.5-10 29-15 69.10-23 27-31 70.23-40 and attacking piece <13> yields a draw.

Black should have gone to king as fast as possible: 56...24-29! 57.33x24 19x39 58.25-20 39-44 59.20-15 44-50 60.15-10 23-29

B) Why can’t white go to king? 61.27-22 61.27-21 29-34 62.35-30 34x25 63.10-4 25-30 black getting a second king and winning convincingly. 61...18x27 62.10-4 12-18 63.4-15 C) How does black win now?

3

S5. The endgame

195

J. Lemmen – D. Staal

White has a worse position, but can still defend.

1.27-22 16-21 2.22x11 21-27 3.32x21 26x6 4.34-29?

A) How should white have defended?

4...23x34 5.28-22 6-11 6.22-18 11-17 7.33-28 34-39 8.28-23 19x28 9.18-13

B) At which square does black have to make a king in order to win the game (tactically)?

4

M. Durdyev – W. Poot

1.40-35!

Black has to sacrifice a piece now. In the game black played 1...13-18 2.23x21 26x17 A) Analyse this endgame. How can white win?

1...24-29 2.23x34 13-18

B) How does white have to play in order to win?

5

J. Spoelstra – T. Smedinga

1...25-30 2.34x25 33-39 3.44x33 35x44 4.45-40 44x35 5.25-20 19-24 6.20x29 23x34 7.27-21 leads to no more than a draw. GMI H. v.d. Zee showed a nice winning line after the game. Black’s best chance is sacrificing a piece:

1...17-22!! 2.32-28

2.27-21 22-27 3.21-16 27x38 4.16-11 38-43 5.11-6 43-49 6.6-1 49-16 7.1-6 19-24 8.6x39 24-30 B+

2...23x21 3.26x39 19-24!

A) Why can’t white chance 34-29x28?

4.39-33 24-30 5.34-29 30-34 6.29-23 18x38 7.40x29 38-42

8.29-23 42-47

B) How does black win quickly after 9.23-19?

C) How does black win on the trictrac after 9.23-18? D) Do you see a defence for white?

S5. The endgame

196

6

T. Goedemoed - S. Doller (analysis)

Black to move

Black to move is frozen out. In such situation a sacrifice of one or more pieces often can still force a draw. Black could easily go wrong here, playing 1...18-23 2.29x18 19-24 3.18-13 24-29

A) How can white win surprisingly? B) Can you find a defence for black leading to a draw (from the first diagram)?

7

H. Wiersma – H. Jansen

White has a strong attacking position and is able to convert the advantage in winning the game.

1.25-20! 13-19 2.24x22 15x24 3.22-18 24-29 4.18-12 29-34

5.12-7 34-39 6.7-1

A) How is 6....39-43 met?

6...39-44 7.1-34!

B) Why is black obliged to sacrifice a piece now?

7...16-21 8.27x16 44-50 9.28-23 50-45

White also wins after 9...50-22 10.34-25 22-33 11.23-19 33-22 12.25-20 22-31 13.20-42 31-22 14.42-47 22-31 15.37-32 31-9 16.16-11 etc. C) How did white win quickly now?

8

G. van Aalten – F. Hermelink

1.34-30 3-19? A) How did white win now?

S5. The endgame

197

B) Show the way black should have made a draw.

9

K. Koopman – G.D. Nijholt

A) How did black force a draw after 1.22-18? A better chance for white is 1.32-27 B) How should black defend the position? Analyse the position:

Take about 15 minutes!

10

H. Jansen

1.39-34! 24-29 2.30-24 19x39 3.28x10

A) How does white win after 3...39-44 4.10-4 13-19? B) How does white force a win after 3...29-34?

C) How does white force a win after 3...16-21 4.27x16 39-44 5.10-4 13-19?

Black’s best defence is 3...13-18 4.10-4 29-33 5.4x6 33x42 6.6x50 42-47 =

11

Marhasin - Chabiboelin

How did black win in a astonishing way after 1...23-29! 2.28-23? 29x47 3.23x3?

Hans Jansen

S5. The endgame

198

Ambushing the opponent

1

O. Lognon - A. Ivanov

White can’t go to <5> and has to go to <4>, after which his king is caught and the remaining endgame is winning for black, although he needs to play it precisely.

1.10-4 41-46 2.4x18 46-28 3.22x33 47x12 4.25-20 12-3 5.20-15 3-14 6.35-30 11-17

7.30-24

Black has to create an ambush for the future white king. How should he play?

2

E. Leclerq – H. Lesage

Black was to move in this game from 1892. He can choose from 3 moves. Find out which is the only move that draws the game.

3

J. Bosselaar – M. Czeladzinski Black to move has to defend against the 21-17 threat.

1...37-41 2.47x36 22-27??

Black should have played 2...18-23 3.9x27 34-39 4.27-49 23-29 5.21-17 29-33 6.17-11 33-38 etc. =

3.9x31 34-39

How was black ambushed now?

4

S5. The endgame

199

J. van Leeuwen – D. de Jong

How did white lay an ambush winning the game?

5

A. Chizhov – R. Boomstra Wch rapid

Black to move thought he would escape in a 3-to-1 endgame, but was ambushed after 1...30-35?? A) How did white win? B) Why would 1...30-34 (or also 9-14 =) have been a draw?

6

White can force an ambush.

7

White forces a bomb shot after which black is ambushed!

8

Broekkamp

You would expect that white should race to king, but his first move is a move with his king! There are two lines in which black is ambushed.

S5. The endgame

200

9

10

11

12

13

14

15

16

S5. The endgame

201

17

18

19

20

21

22

23

24

S5. The endgame

202

Tricky endgames

M. Bonnard

1.8-3! 23-28

A) How does white meet 1...33-38?

B) How does white win after 1...33-39?

2.3-17

C) How is black ambushed after 2...28-32 3.17x39 32-37?

2...5-10 3.25-20 28-32

4.17x39

4...10-14

After 4...32-37 5.39-28 37-42 6.28x5 black is ambushed again.

5.20x9 32-37 6.9-4

D) How is 6...37-41 met?

E) Finish off the job after 37-42!

Y. Zubov

1.13-8 30-34 2.8-2 7-11 3.2x16 34-40 4.16-11 17-21 5.11-22! 40-45 6.49-44 6-11 A) How is 6...40-45 punished? 7.22x6 21-27 8.44-39 27-32 9.36-31 45-50 B) How does white win after 9...32-38? 10.31-26 50x33 11.6x39 32-37 C) How does white finish off this endgame?

S5. The endgame

203

White plays and wins

1

2

3

4

in all diagrams

5

6

7

8

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9

10

11

12

13

14

15

16

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205

17

18

19

20

21

22

23

24

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Nut shells

We show some compositions that are called nut shells. In this type of composition many pieces are on the board, also kings. We show them because it is a special kind of art. The solutions contain a lot of beauty!

1

J.F. Moser

2

J.J. van Tol & T. van Prooijen

3

R. Bergsma

4

F. Hermelink

5

K.W. Kruijswijk

6

J.J. van Tol & T. van Prooijen

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Solutions

King against 4 pieces 1A) 2.16-11 and since black can’t play 2…12-17 because of 3.39-34! W+ white gets a king quickly and wins. B) 2.39-34 42-31 3.22-17 31-18 4.34-30 18-13 = C) 2.22-17 42-26 3.17-11 26-31 (or 26-37) (threatening 31-22 =) 4.39-34 31-22 5.11-6 22-18 6.34-30 18-13 =

D) 8.16-11 27-16 9.11-6 16-7 = E) 8.25-20 27-38 9.20-15 38-29 (or 38-24-13) = F) 5.20-15 8-19! = G) 6...26-48 7.34-29 48-37! 8.10-5 37-42 9.29-23 42-31 10.18-12 31-18 = 2) 5.28-37! Keeps piece <26> on his spot. Piece <43> can’t advance because of 6.28-32 =. After 5...4-9 white can choose from several moves. We show the line the author gives: 6.37-23! 1) 6...26-31 7.23-12 (note that 23-18? would lose!) 21-27 (21-26 12-18 =) 8.12-26 31-36 9.26-31 = 2) 6...9-13 7.23-7 (threatening 7-16) 21-27 8.7-2 13-18 9.2-7 18-22 10.7-11 = 3) No solution! 4A) 2.2-16 32-37 3.16-38 is met by 19-23 & 23-29 catching the white king. B) 5.11-7 34-39 6.7-11 39-43 7.11-16 32-38 8.16-2 24-29 9.2-7 29-33 10.7-11 = 5A) 2.2-7 34-39 3.7-11 = B) Black won’t be able to take possession of the main diagonal, since his pieces <26, 31, 36> can’t make a catching construction. C) 3.2-24 (threatening 24-33=) 27-32 4.24-33 22-27 5.33-42 36-41 6.42-47 41-46 7.47-36 = 6) From an analysis of Gortmans 1930 7.3-9 18-23 8.9-14 23-29 9.14-3! (or 14-9 with the same idea ) 33-39 10.3-21! 34-40 11.21-38 29-34 12.38-49 40-45 13.49-40 = 7A) 1....45-23? 2.39-34! 23x49 3.27-16 49x27 4.16x32 W+

B) 4.39-33 37-42 5.33-28 42-38 6.27-22 38-24 (or 38-42 =) threatening 24-35 & 24-19 etc. = 7.36-27 (7.28-23 24-33 =) 24-35 8.27-49 35-19 9.49-32 19-35 repeating the moves with a draw. C) 4.39-34 37-48 5.44-39 5.34-29 48-42 6.29-23 42-38 7.27-22 38-33 = 5...48-31 6.27-21 31-26 7.21-16 26-17 = D) 11...49-32 12.19-13 32-43 13.34-29 43-38 14.29-23 38-32 = 8) 1.8-3 37-41 2.3x25 41-46 3.28-22 46-37! 4.22-18 37-31 5.18-12 31-42 6.24-19 42-33 = and 4.17-12 37-31 5.22-17 31-42 = 4.24-20 37-42 5.20-14 White must also protect piece <22>. 5...42-20 6.14-10 20-3 7.17-11 3-17 =

9) 1.9-3 21-26 Another variation would be 1...21-27 2.3-12 Also good is 2.3-9 27-32 3.9-3! for example: 39-44 4.3-21 32-37 5.21-12 29-33 6.12-26 37-41 7.26-42 33-39 8.42-48 = 2...29-33 3.12-8 39-43 4.8-19 33-39 5.19-13 27-32 6.13-19 32-38 7.19-24 = 2.3-12 29-33 3.12-17 25-30 3...26-31 4.17-26 31-36 5.26-42 = 4.17-8 30-35 5.8-24 = 10) L. Sekongo - P. Oudshoorn 1...12-18! The game was 1...26-31? 2.47-42 31-36 3.42-26! 12-18 4.26-37! 18-22 5.37-32! =. 11) G. Burleson – R. Kemnaad 1...25-30! 2.15-10 2.12-7 30-19 3.37-31 19-13 4.31-26 13-18 = 2.37-31 30-35 3.29-23 35-13 4.31-26 13-18 = 2.37-32 30-19 3.32-27 19-13 4.27-21 13-35 5.29-23 35-40 6.23-18 40-49 7.21-16 49-27 = 2...30-48 3.37-32 48-42 4.29-23 42-26 5.12-7 26-21 6.32-28 21-17 = 12) 1.26-12! 38-42 1...39-44 2.12-29 38-43 3.29-24 13-18 4.24-29 18-22 5.29-33 = 2.12-17 39-43 3.17-22 13-19 4.22-28 19-24 5.28-33 =

King + 3 vs king + 1

1) S. Lochtenberg – R. Keller A) White can’t attack immediately, since 5.9-22? is punished by 26-17 & 29-33. White has to sacrifice his piece first: 5.41-37! 26x42 6.9-22=

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B) 1.9-4? was met by 7-11!! Black has to protect his pieces before racing to king! The game continued 2.4-18 29-33 3.18-34 28-32 4.34-25 11-16 5.25-48 21-26 6.48-25 26-48 7.41-36 48-26 8.25-14 32-38 9.14-46 38-43 etc. and black became dominant and won.

2) I. Milikowski – I. De Jong A) 4.32-28 24-13! 5.28-22 16-21 6.26x17 13-8 7.17-11 8-2 8.11-6 2-16 =

B) 6.50-44 (white can also play 50-39 or 50-33) Preventing black from going to the 1/45 diagonal: 45-23 44-28 +; 45-7 22-18+) 45-50* 7.44-28 50-45 8.28-50 45-7 9.50-45 conquering the trictrac. And after 7-2 10.22-18 etc. white becomes dominant. W+ C) 1.38-33! 44-50 2.32-28 50-45 3.2-13 45-34 4.13-27 Black has to leave the trictrac now. After 34-25 5.33-29 (or 5.28-22/23) white’s pieces are protected well and he advances to second king, becoming dominant. 3) W. Sipma – A. Chizhov A) 2.9-22 11-16 3.22-28 = B) 3.43-39! 33x44 4.25-43 21-27 5.43-34 23-28 6.34-18 = C) 3.43-38! 33x47 4.25-39! (25-43? 32-37! 43-32 47-41-46 B+) 47-33 5.39-43 33-38 6.43-39 repeating the moves with a draw. D) White repeats the moves playing 5.26-12 47-29 (or 23-28 12-17 15-33 17-26 =) 6.12-3! 29-47 7.3-26! E) 3...32-38! 4.26x42 47x49 B+ F) The game was 3.12-26? 29-47! Now white can’t attack piece <23>: 4.26-12 32-38! B+ After 4.26-48 piece <16> advances: 4…16-21 and white can’t attack 5.48-26 as we already noticed. 4.26-3 is met by 4…32-37 and piece <37> can’t be stopped. Therefore white has to play 3.12-3! 29-47 (otherwise piece <23> is attacked, repeating the moves) 4.9-26! and it’s a draw, since black can’t make any progress! 4) R. Sloot – A. Schotanus A) 1.10-5? 43-16! 2.5-28 18-23! 3.28x21 16x27 B+ B) 4...23-29 5.36-41 19-24 6.41-28 = C) 6... 19-24 7.38x20 23-29 8.20x11 6x17 B+

D) 7...23-29 B+ E) 11.49-35 24-29 12.21-17 6x22 13.35-19 28-33 14.19-28 = 5) A. Georgiev – K. Thijssen A) White plays 29-34, 43-49 & 49-35:

Black has to leave the main diagonal, after which gets a second king and becomes dominant. White can make a catching construction even faster by playing 43-34 & 34-45!

B) 3...12-3! (black has to wait with sacrificing his piece, since 3...16-21? 4.43x16 12-3 is punished by 16-2-24 +) 4.14-10 16-21! 5.43x16 3-17 6.33-29 17-12 7.29-24 12-8 8.24-20 8-3 =. C) 3...19-8! 4.20-14 8-3 5.14-10 16-21 6.43x16 8-12 etc. = D) 3.43-39 16-21 4.39-50! and black has to leave the main diagonal, after which white gets a second king and becomes dominant. 6) G. Boom – V. Doumesh A) 2...42-26 3.20-15 26-17 4.44-39 17-3 and the vulnerable piece <39> is attacked B) 6.45-50 14-46 (if black leaves the main diagonal white becomes dominant) 7.44-39! And at the next move the black king is caught.

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7) H. Twijnstra – T. Goedemoed analysis A) 2...28-32? 3.1-18! (3.1-23? 15-10-5 B+) 3...15-4 4.35-30 32-37 5.30-24 Creating a tag (24/14). 5...37-41 6.18-40! 9-13 7.40-35 Threatening 24-19 = 13-18 8.35-40 = B) 8.48-25 14-19 9.25-30 19-23 10.30-34 15-29 11.34-45 38-43 12.35-30 = C) Black protects all his pieces. White can’t attack any piece now! D) 7...38-42! 8.19x30 42-48 9.30x8 15-24 10.8x30 48x25 B+ E) 9...38-43 10.26-37 28-33 10...18-23 11.37-48 43-49 12.48-34 15-29 13.34-39 29-33 14.39-34 33-29 15.34-39, repeating the moves with a draw. 11.25-20! 15x24 11...15x29 12.37-31! 18-23 31-37 = 12.37-42 24-29 13.42-31 18-23 14.31-37 =. F) 12...27-31 13.48x26 32-37 14.26x33 15x38 B+ 8) I. Kuperman – N. Mistjanski 1.2-24! 1.2-16? was played in the game with a draw after 32-37 2.16-49 37-41 3.22-18 41-47 4.18-13 47-24 5.13-9 24-2 6.9-4 2-16 = 1...32-37 2.24-47 39-44 3.25-20 Piece <22> stays on it spot to cover the 4/36 diagonal. Now it costs the black king too much time to reach <36> and advance his piece to king. 44-50 4.22-18 50-17 5.20-15 17-26 6.15-10 Or even 6.18-13 26-31 7.13-8 31-36 8.8-2 37-41 9.2-13 36x4 10.47x36 W+ 9) A. Scholma – P. van Harten This endgame is much more complicated than one may expect. 1.12-7? loses due to 48x26 2.7-2 19-23 3.2-19 26-17! 4.19x11 6x17 B+ 1.31-26! still gives white a chance to defend! 1...19-23 2.12-8 23-28 2...48-43 3.26-21 43x16 4.8-3 = 3.8-2 48-43 Stopping piece <26>. 3...28-33 4.2-8 33-39 5.8-17 39-43 6.26-21 14-20 7.21-16 43-49 8.17-33 20-25 9.16-11 6x17 10.33x11 = 3...28-32 would allow piece <26> to advance, creating the 6/17 tag. 4.2-24 43-16 If white defends correctly black can't go to second king without letting piece <26> advance. But if <26> can advances, white always makes a draw. 5.24-29 16-27 6.29-15

6.29-47? allows black to win: 14-19 7.47-15 27-16! 8.15-20 A more complicated way to win is needed after 8.15-47 19-23 9.47-15 28-32 10.15-10 23-28 11.10-14 6-11! 12.14-19 11-17! 13.19-14 16-27 14.14-19 27-18 15.19-14 18-29! 16.14-10 29-38! 17.10-14 38-49! Forcing white to give up the blocking of black’s pieces. 18.14-20 32-37 8...28-32 9.20-42 19-23 etc. B+ 6...14-19 7.15-47 19-23 8.47-15 27-16 9.15-10 16-49 10.10-15 49-16 10...28-32 11.26-21 49-44 12.15-10 23-28 13.21-17 44-40 14.10-14 = 11.15-10 16-27 12.10-4 27-16 13.4-10 etc. = So, the position is a draw, if white defends correctly, which isn’t easy at all! It is hard to judge this of course, but you’ll learn that the minority players in these types of endgames usually still have many defending opportunities! 10) T. Sijbrands – S. Koopman 1.6-11! 1.32-27? 41-46 2.27-21 46-37 leads no more than a draw. Also good is 1.32-28 41-46 1...14-20 2.28-22 41-46 3.22-17 etc. W+ 2.6-11 46x19 3.11-2 W+ 1...14-20 2.11-6 20-25 3.6-11 41-47 4.11-16 47x24 5.34-29 24x27 6.16x43 W+

11) T. Sijbrands – E. van Hierden A) Black shouldn’t attack immediately, since 9...9-4 loses due to 10.19-37 +. Black should sacrifice his piece first: 9...16-21! 10.26x17 9-4 11.10-5 4-15 =

B) White should take the 4/36 diagonal: 1.28-22 (or via 28-10-4 or 28-41-36) for example: 1...1-23 2.22-27 23-41 3.33-29 41-28 4.30-24 28-17 5.24-19 etc. W+ 12) O. Dijkstra – O. Lognon A) 3.50-44 is met by 34-39! B+ and 3.50-28 (or elsewhere on the trictrac) is met by 29-33! 4.23x30 14-20 B+. B) 3...3-17 4.45-50 17-6 50-45 6-50 B+ C) 8.25-20!! 29x15 9.26-3 15-20 10.3-12 20-29 11.12-3 14-19 12.3-8 29-24 13.8-12 24-29 14.12-8 29-24 15.8-12 etc. = D) 2...23-29 3.44-49! (3.44-28? 29-33 4.28x30 14-20 5.25x14 3x34 B+) 3...29-33 4.49-44! 33-38 5.44-28 = E) 8-2! 4.50-33 (because of tricks white can’t go elsewhere!) 34-40 5.33-20 2-30!! 6.25x45 14x25 B+

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13) Hoofdlijn magazine A) 3...25-20 4.33-28 20-14 5.45-23 14-5= B) 3...35-40! 4.45x23 4.45x29 25-9 5.18-12 9-22 =4...25-9 5.18-12 9-20! 6.33-28 20-3 7.12-7 3-17 = C) 1.41-36! 49-16 1...49-43 2.28-23 43-25 3.23-19 etc. W+ 2.28-22! 16-2 3.22-18 White's pieces are protected well and he will soon get a second king. 14) H. Tangelder - Fazilov 1.2-13! White eliminates the 17-22 move, black creating a tag. All other moves are only a draw. 49-40 2.23-19 40-44 3.13-36 15) Z. Palmans 1.7-1! 4-27 2.38-33 27-22 3.33-29 22-13 4.24-20 13-24 5.1-7! 24x15 6.7-16 15x33 7.16-38 33x42 8.47x38 6-11 9.38-32 11-17 10.32-27 W+

16) F. Hermelink 1.40-1! 1.40-34? 6-11 2.32-27 33-38 3.34-48 11-16 4.27-22 16-21 5.15-10 21-26 = 1.40-49? 6-1 2.35-30 1-23 3.32-27 23-19 4.30-25 33-39 5.27-21 19-35 = 1...33-39 1...6-11 2.1-6 11-16 3.6x44 16x40 4.35x44 + 2.32-28 6x33 3.1-34 39x30 4.35x24 33x20 5.15x24 W+

17) H. Jansen – A. Presman 1.8-24! 33-39 2.24-30 39-44 3.30-35 44-49 4.35-44! 50x31 5.36x27 49x21 16x27 W+ 18) C. Blankenaar 1...10-23? 2.11-7! 23x45 2...1x12 3.36-18 23x45 4.18x1 W+ 3.33-28 1x12 4.28-23 45x18 5.36x13 W+ 19) Blonde 1.33-38! 21-26 2.38-32! 48-25 3.49-43 25x48 4.32-37 48x31 5.36x27 W+ 20) K.W. Kruijswijk 1.25-3! 12-18 1...31-26 2.3x21 26x42 3.47x38 W+ 2.28-22 18x27 3.3-26 31-36 4.26-31 W+ 21) Michanski – Petuchov 1.32-27 50-28 2.29-42 Or other moves on the 15/47 diagonal, allowing white to attack 17 on the next move. 2.29-15 28-14 3.15-33 etc. W+ 2...28-14 3.42-33 W+

22) L. Schut 1.32-28 50x22 2.37-32 22-50 3.32-28 50x22 4.49-27 22x31 5.36x27 W+ 23) G. de Bruijn 1.9-4 41-47 1...41-46 2.33-28 46-41 3.4-36 41-47 4.32-27 47x31 5.36x16 W+ 2.32-27! 21x43 3.4-15 47x29 4.15x49 W+ 24) C. Blankenaar 1.19-37! 47x20 1...47x15 2.37-31 15-47 3.31-26 36-41 4.46x37 47-36 5.26-31 2.37-31 20-25 3.31-42 25-3 4.42-26 3-20 5.46-14 20x31 6.26x37 25) Kovalev 1.18-12 35-40 2.12-7 40-44 3.7-1 44-49 4.39-34 50x28 5.6x44 49x29 6.1x34

26) L. Schut 1.18-12 46-28 2.12-7 28x50 3.7-1 35x44 4.16-49 27) K.W. Kruijswijk 1.47-29 Piece 35 must be stopped. With a piece on <45> and black controlling the main diagonal, white can’t win. 1…10-15 2.29-24 35-40 3.11-6 15-10 4.6-1 40-45 5.50-44!! 45-50 5...10-41 6.20-14 41x10 7.24-19 10x50 8.1-6 W+ 6.24-47 50x15 7.1-29 15x33 8.47x4 W+

Black has more than one piece

1) E. van Dusseldorp – S. Pryor White shouldn’t race to king, since after 1.11-6? black forces a draw playing 47-33 45-50 35-40 44x24 47x15 =. He should proceed quietly with 1.32-27! taking care that black can’t go to <33> (1...47-33 2.45-50 33x6 3.44-39 W+) 47-20 3.11-6 20-9 (20-33 27-21-17 W+) 4.27-21 9-3 5.21-16 3-17 6.45-50 30-34 and now both 7.6-1 and 7.44-40 34x45 8.50x11 45-50 9.11-17 50x11 10.16x7 35-40 11.7-1 40-45 12.1-12 W+. 2) I. Weiss 1.25-9 35x2 1...35x8 2.34-7 4x13 3.7-16 8-2 4.39-11 W+ 1...35x24 2.39-6 4x13 3.34-18 13x22 4.6x15 26-31 5.15-42 31-36 6.42-37 W+ 2.39-43 4x13 3.43-16 2-8 4.34-39 8-2 5.39-11 and the black king is caught at the next move.

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3) C. Benenson 1.35-8! 2x13 1...12x3 2.14-9 5x14 3.46x5 3x14 4.5x48 2.10-15 5x19 2...5x37 3.46x26 3.15x47 W+ 4) 1.39-11! 49x35 2.3-21! 30-34 2...35-49 3.21-16 30-34 3...49-35 4.11-2 30-34 5.45x18 W+ 4.45x29 49-35 5.11-44 35x49 6.29-38 W+ 3.45x7 25-30 4.7-45 30-34 5.45x7 W+

5) Galasjov – A. Georgiev A) 6.31-27 49x21 7.35-44 = B) 39-44 & 22-27 B+ C) 4...42x15? 5.35-13! 22-28 6.36-31 1) 6...28-32 7.13-19 (7.31-26? 15-4) 7...32-38 8.31-27 39-44 9.19-13 2) 6...39-43 7.31-27 15-4 8.13-30 (8.13-19? 4x36 9.19x49 36-27 10.49x21 16x27) 8...4x36 9.30x48 =

6) Borkov – A. Georgiev The game was 1.42-37? 35-40 2.3-25 50-33 3.25-14 23-29 and white resigned. He should have played 1.3-14! 23-29 2.14-25! Piece <35> can’t advance now. 2...50-6 3.42-38 Still piece <35> can’t advance: 3...35-40 is met by 4.16-11! 6x47 5.25-34 Black also can’t win like this: 3...6-17 4.38-32 17-50 4...35-40 5.25-20 23-29 6.20-25 17-39 7.32-28 =. 65.25-43 50-6 66.43-48 6-1 67.48-39 35-40 68.39-50 40-45 69.32-27 7-12 70.27-22 =. 7) Sacrificing the piece with 1.47-42! 24x47 leads to a theoretical draw in this post-Scouppe-position. Piece 21 can’t be advanced any further than <22> in order to win. Black only can try some tricks now (see ACID part 3 on the endgame). In the game white blundered playing 1.23-14?? 24-42! B+. 66.47-42! 24x47 67.23-19 49-35 68.19-46 21-27 69.46-5! (69.46-14? 47-24! 70.14-5 27-31 71.5-14 31-36 B+) 69...47-24 (69...27-31 70.5-46 47-24 71.46-5 31-36 72.5-14 =) 70.5-14 24-33 71.14-46 27-31 46-14 etc. = T. Tesselaar – H. v.d. Zee A) White blocks his own king! B) 2.27-22 44x6 3.16-32 23-29 4.32-38 6-11 5.38x24 11-2 6.24-35 15-20 7.35-49 34-40 & 20-24 B+

C) 1.47-42! 1) At 1...35-44 white can attack 2.16-32 23-29 3.32-43! etc. = now. 2) 1...34-39 is met by 2.16-11 35-44 2...39-43 3.42-38 43x32 4.11-7! 23-28 5.7-11 35-24 6.11x20 15x24 7.31-26 = 3.11-7 23-28 4.42-38 (creating the 28/38 tag) and the game will be drawn, for example: 4...44-35 5.7-45 =

2 kings + 2 vs king and pieces 1) A. Tolchikov – A. Ivanov A) 1...49-40! 2.35x44 24-30 3.25x34 45x46 B+ B) 3.37-26 38-49 (or 45-34 first) 4.26x30 45-40 5.35x44 49x24 B+ C) Black should protect piece <12> by playing 12-17! White can’t attack the piece and it is transported to the safe edge square <26>. D) 4.48-26 33-17 [ 4...12-18 5.26-8 24-29 6.35-30 = ] 5.26-42 45-29 6.42-47 17-33 7.35-30 24x35 8.25-20 29x15 9.47x7 = 2) Georgiev – Schwarzman A) 1...41-46! 2.19-13 46-10! (or 27-31) 3.13-9 9-4 4.9-3 27-32 5.7-29 32-37 6.29-47 4-15 = B) 1.13-9! puts the second king in the right quadrant: <4 / 15/ 47 / 36>. Now black can’t use the forcing to make a draw. 1...41-46 2.19-13 now simply wins. The rest of the game could be 1...27-32 2.9-3 32-38 3.7-23 41-47 4.3-25 47-36 5.25-48 36-9 6.23-29 W+ C) 3.7-23 41-47 4.23-37 47-36 5.2-16 W+ 3) A. Kosior – F. Luteyn 1...42-48 The game was 1...49-21? 2.24-19 21-3 3.19-13 = 2.24-19 49-35 3.19-14 48-25 4.14-10 25-20 5.15x24 35x5 4) B. Neven – T. Le Quang A) 2...15-20! 3.24x15 21-26 = B) 1.4-18! 32-21 2.18-40

2...21-26? 3.40-49 W+

2...21-32 3.40-29 W+

2...15-20 3.24x15 21-26 4.40-29 W+

5) Scouppe + <26> A) 1.29-12 36-41! 2.47x36 46-19 (threatening 19-13 & 26-31) 3.1-6 19-24 4.38-32 26-31 5.36x27 24-19 6.6-28 19-13 =

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B) 6.17-39! 31-37 7.39-48 and since 37-41 is met by 38-32 5x37 48x31 36x27 47x36 W+ white wins the piece and wins like is shown in ACID part 3.

6) R. Clerc - T. van de Meerendonk (10)1.8-24! 26-31 1...18-1 2.14-23 1x20 3.15x24 1...18-45 2.24-29 45x10 3.5x28 2.24-42 Now white shouldn’t catch the black king, since 14-23? 12x20 15x24 4-10! is only a draw. White instead gains the piece and the rest of the game could be: 2...18-40 3.42x26 40-18 4.14-20 18-40 5.20-24 40-44 6.26-12 44-22 7.12-23 22-9 8.23-37 9-3 9.37-48 3-9 10.5-41 36x47 11.48-25 47x20 12.25x3 W+

7) Opposition 6/1 A) 1.50-22? 1-7! 2.6-1 3-26 = B) 1.50-45! 3-25 1...3-8; 1...3-9 2.45-7 1x12 3.37-31 36x27 4.43x14 W+ 2.43-21 25-3 3.21-26 3-25 4.45-34 25x31 5.26x37 W+

Endgames with 2 kings for the opponent 1) O. Drenth – H. v.d. Zee 1A) Black has two pieces behind the main diagonal that won’t be able to promote to king. With only one piece behind the main diagonal black is still able to win, but not with two pieces. So, the game is a draw. B) 1.5-14? 36-41! 2.46x6 44-50 3.6x44 50x10 B+ 2) R. Vipulis – G. Jansen 2A) 1.14-25 4-10! 2.5x21 16x43 3.25x48 15-42 B+ B) 1.14-46 15-20! 2.46-28 20-14 3.5x23 26-37 (or 4-18 23x1 16-7 B+) 4.28x46 27-31 5.36x27 16x5 B+ C) 1.14-3 15-42 2.3-14 42-48 3.14-46 48-25 4.46-23 25-14! 5.5x19 4-18 6.23x1 16-7 7.1x31 26x14 B+ 3) W. Wesselink – O. Dijkstra Black should play 16-7 and keep his both kings in the trictrac-zone. White has two pieces behind the trictrac and can’t win. The endgame is a draw. 4A) 1...46-23 2.15-10 5x19 3.47-41 23x46 4.48-37 46x11 5.6x5 W+

B) 1...46-14 2.47-20 14x25 3.15-10 5x11 4.6x39 25x43 5.48x39 W+ 4A) 1...46-23 2.15-10 5x19 3.47-41 23x46 4.48-37 46x11 5.6x5 W+ B) 1...46-14 2.47-20 14x25 3.15-10 5x11 4.6x39 25x43 5.48x39 W+ C) 1.17-22 W+ 5) 3.15-10 5x21 4.26x8 35x2 5.1-7 2x11 6.16x7 W+

6) 6.15-10 5x21 7.26x8 35x2 8.45-7 2x11 9.16x7 W+ 7) A. Georgiev - R. Boomstra 1...46-19 2.15-10 5x14 3.48-31 36x27 4.47-41 19x46 5.11-22 27x18 6.1x5 W+

8) M. van IJzendoorn – F. Amirkhan 1.46-5! (or another move with the king on <46>) and the kings are caught at the next move: 1...50-6 2.5-28 (or 5-23 etc.) 6x42 3.47x29 45x31 4.36x27 + 1...45-1 2.5-28 (or 5-23 etc.) 1x42 3.47x33 50x31 4.36x27 + 9) W. Wesselink

The white king can be at <10, 14 or 19> also.

1.5-10 1) 50-6 2.10-23 45x31 3.36x22 6x37 4.46x32 W+ 2) 45-1 2.10-23 etc. + B)

S5. The endgame

213

With an extra piece on <16> white can force this endgame. Black to move has to sacrifice his piece. White to move just waits with 4-9 or 4-13. E. van Dusseldorp 1.4-13

1...45-1 2.13-18 1x37 3.46x28 50x31 4.36x27 W+

1...45-34 2.13-22 50x6 3.27-22 6x37 4.46x45 W+

1...50-6 2.13-22 6x37 3.46x23 45x31 4.36x27 W+

10) R. Keller – C. Suyk 2.23-29! 22x50 3.19-2 35x13 4.2x35 50-28 5.35-44! 28x50 6.29-12 W+

Macro endgames 1) A. Kalmakov – A. Georgiev 56.34-39 49-35!! 57.39x6 57.39x17 13-18 58.31x13 35x21 B+ 57.39x11 2-7! etc. B+ 57...2-7! 58.31x22 7-11 59.6x17 13-18 60.22x13 35x21 B+ 2) A. Getmanski – A. Georgiev A) 1.44-50? 23-28 B+ and 1.44-6 18-22 B+ are losing. White can play 1.21-16 however, since catching the white king isn’t winning now: 29-33 44x30 (it doesn’t matter how white takes the pieces) 25x39 35-30 39x25 16-11 is a draw.

B) 24-29! 76.48x25 29-34 77.25x50 18-22 78.50x17 6x39 0-2 3) R. Heusdens – P. Teer A) 1...50-28? 2.32x23 21x41 3.23-19 26x37 4.38-32 37x28 5.25-20 15x13 6.2x46 B) 11...16-21! 12.27x16 28-32! 13.37x28 26-31 = C) 12.9-4!

12.33-39 13.37-31 26x37 14.27-21 16x27 15.4x34 W+

12...26-31 13.37x26 16-21 13...33-39 14.26-21! W+ 14.27x16 33-38 15.4-10! 38-43 16.10-32 W+

12...16-21 13.27x16 33-39 14.4-22 39-43 15.22-31 W+

We saw these lines in the composition of A. Molimard in the first part of ACID. 4) Cerberus – TD King A) 2.24-15 14-19! 3.15x4 50-22!! 4.27x18 19-23! 5.18x29 21-27 6.32x21 16x27 7.4x31 26x46 B+

B) 3...39-48!! 4.15x4 48x22 5.4x27 14-19! B+ 5) N. Gulyaev – I. Kirzner 1...3-8! 2.19x2 16-21 3.35-30 3.2-16 9-13 4.16x9 4x13 5.35-30 13-19 6.45-40 17-8 7.30-25 19-24 8.40-34 8-3 B+ 3...9-13 4.2x24 17-6 5.26x17 6x20 B+ 6) R. Heusdens – K. Thijssen 1.24-20 25x14 2.47-41 36x47 3.38-32 47x8 4.32x41! 46x23 5.2x28 7) K. Dijk - K. de Bruin 1...47-36 2.2x30 14-20 3.25x14 16-21 (immediately 23-28 is also good) 4.26x17 23-28 5.33x22 36x45 B+

8) H. v.d. Heuvel - C. van Leeuwen 1...26-17? 2.33-29! 17x50 3.29-24 35x44 4.24-20 15x24 5.45-40 44x35 6.38-33 50x37 7.46x29 W+

3 Kings against 1 king 1) 1.34-48 (threatening 38-27 +) 3-25 2.37-28 25-9 3.38-20 4.28-39 W+ 2) 1.41-47 15-4 2.32-38! (threatening 37-10 +) 4-36 3.38-15 36-13 4.37-31 13x36 5.15-4 W+ 3) 1.41-47 20-25 1...20-3 2.47-38 + 2.47-38 with the 38-21 threat, while 3-25 is met by 38-43 etc. W+ 4) 1.27-49 2-11 2.29-1 11-16 3.34-39 16-2 4.39-30 5.1-40 W+

5) 1.42-26 3-9 1...3-20 2.10-15 20-9 3.15-20 9x25 4.26-3 + 2.10-4 9-20 3.4-9 20x3 4.48-25 W+

6) 1.14-25 48-31

S5. The endgame

214

1...48-42 2.41-47 42-26 3.47-42 4.32-43 + 1...48-26 2.25-48 26-3 3.32-21 4.41-37 + 2.41-36 31-42 3.36-47 42-31 4.47-42 5.32-43 W+ 7) 1.14-3 with the Magic Triangle, threatening both 3-21 28-11 & 2-30 28-14 W+. 8) 1.1-18 26-8 1...26-3 2.48-26 3-14 3.18-9 4.44-17 + 1...26-21 2.44-49 21-17 3.49-21 4.18-31 + 2.44-49 with the Magic Triangle! W+ 9) 1.30-2 7-18 2.2-7 18x1 3.50-45 W+ 10) 1.50-45 7-2 2.44-39 2-16 3.45-29 16-2 4.39-30 2x35 5.29-40 6.49x40 W+ 11) 1.41-47 42-26 2.47-24 W+

12) 1.41-36 9-25 2.36-27 W+ 13) W. v.d. Kooij – E. Torn 4...34-40 5.43-49 15-33 1...15-29 and 2...29-12 is also possible 6.49x35 33-17 Threatening 17-8 45-7. 7.35-49 17-21 8.49-44 45-50 9.44-35 50-44 9...50-11 is also possible! 10.35x49 21-27 11.49x21 16x27 B+ 14) M. van Gortel – J. Schoenmakers 1.21-17! 44-50 2.17x6 50x17 3.14-3 17-26 4.6-1 26-48 5.36-31 48x26 6.1-12 26x8 7.3x12 W+

15) 4.35-49 16-11 5.18-1 11-16 5...11-28 6.49-44 28x50 7.1-6 + 6.34-29 16-2 7.49-35 2-16 8.1-7 16x2 9.29-24 2x30 10.35x24 W+ 16) P. Steijlen - F. Andriessen 5.50-45 White can also play 5.49-16 39-43 6.16x49 2x16 7.50-45 16-7 8.6-39 7-16 9.45-40 etc. W+ 5...2x16 6.6x44 16-2 7.44-39 2-16 8.45-40! 16-7 9.39-34 7-11 10.34-1! Threatening 49-44 & 1-6 + 10....11-2 11.40-34 2-16 12.34-29! 16-2 13.49-35 2-16 14.1-7 16x2 15.29-24 2x30 16.35x24 W+

3 Kings vs King + 1 1) L. Springer 1.46-41 47-15 1...21-27 2.36x4 47x36 3.37-31 + ; 1...21-26 2.37-32 47-15 (2...47-29 3.32-21 26x17 4.36-22 17x28 5.41x34; 2...47-33 3.32-21 26x17 4.41-28 33x22 5.36x18) 3.41-47

2.37-14 15-47 2...15-42 3.36-27 21x32 4.14x48 ; 2...21-27 3.36x4 15-33 4.14-20 33x15 5.41-47 + 3.14-19 47-20 3...21-26 4.36-4 47x36 5.19-13 36x9 6.4x13 + ; 3...47-15 4.41-47 + 4.19-30 21-26 4...20-42 5.36-31 42x26 6.30-48 + ; 4...20-25 5.41-32 25x27 6.36x22 + ; 4...20-15 5.41-10 15x4 6.30-13 + 5.30-43 20-3 5...20-24 6.43-21 26x17 7.36-22 17x28 8.41x30 + 6.41-37 3-17 6...3-12 7.43-21 26x17 8.36-22 17x28 9.37x7 + 7.37-46 17-6 7...17-3 8.43-25 + ; 7...17-50 8.43-21 26x17 9.46-28 50x22 10.36x18 + 8.43-32 2) C. Blankenaar 1.29-47 Black can't put his king at the 4/36 diagonal, because of 46-37 + 31-36 2.46-41 Now black can't play at the 4/36 diagonal because of 47-42 +. 4-15 3.49-32 15-4 3...15-24 4.47x15 36x47 5.32-38 W+ 4.41-37 4-15 4...36-41 5.47x36 4-15 6.32-27 etc. 5.32-27 36-41* 6.47x36 15-47 6...15-24 7.37-19 24x31 8.36x27 W+ 7.27-4 47-29 8.37-42 29x47 9.4-15 W+

3) C. Blankenaar A) 4.32-43 5.5-37 + B) 19-8 41-14 +

C) 19-10 3-20 + D) 3-21 & 19-32

E) 47-36 27-49 36-27 +

F) 19-30 47-20 + G) 7...36-31 8.3-26! Black can’t go to <22, 18, 13, 9> because of 26-21 & 10-32 + 8...31-27 9.10-4 27-49 10.4-27 + H) 9.26-31 18x36 10.10-4 W+ 4) T. Goedemoed 1.46-37! 26-31 1...3-20 2.27-31 20-15 3.48-43 15-4 4.43-27 4-15 5.27-4 15-47 6.4-15 47-36 7.15-4 36x22 8.4x27 W+ 2.37x26 3-14 3.27-9 14x3 4.48-25 W+ 5. C. Blankenaar

S5. The endgame

215

A) 2.15-10 28-33 3.10-28 46x40 4.45x38 W+ B) 4.36-41 + C) 7.45-23 48-30 8.27-43 9.23-37 + D) 8.26-12! 44-49 8...44-28 9.16-11 28x6 10.45-50 W+ 9.12-17 49-35 10.17-8 11.45-7 W+ 6) Cosmos A) The black king will be caught in the 3/25/48/26 quadrant. B) 1...16-21 2.1-12 26-48 3.12x26 48-39 4.2-30 39x25 5.26-48 W+ C) 4.7-12

D) 5.25-3! (8-19 3-8) W+

E) 5.7-12 3x17 6.6x22 W+ F) 6.25-43 49x32 7.6-11 16x7 8.1x37 W+

G) 7.33-42 8.1-34 W+

H) 8.33-44!! 8-3 9.40-23 3-8 10.44-35 W+

I) 8.33-28 3-21 (8...3-8 9.40-35) 9.40-49 W+ J) 8.40-35 3-26 (8...3-21 9.33-22 27x18 10.35-13 18x9 11.25x26) 9.35-30 26-3 10.33-20 W+

Transition form late middle game to endgame

1) A. Scholma – W. Sipma A) 55...44-50 56.17-12 50-45 57.12-8 14-19 58.25x23 45x3 B+

B) 57...20-24!! 58.2x30 16-21 59.26x17 14-20 60.25x14 29-33 61.38x29 45x9 B+ C) 57.32-28 29-33! 58.28x39 16-21 59.26x17 14-19 60.25x23 45x2 ; 57.32-27 29-33 58.38x29 45x3 B+ 2) J. Weijman – K. Thijssen A) 56.27-22!! 17x39 57.34x43 and later white can break through at the left wing.

B) The king will be caught. 61.10-4 is met by 13-19! 62.4x6 29-33 B+ 61.10-5 is met by 18-23 62.5x6 29-33 B+ C) 63...27-31! 64.15x6 18-23 65.26x37 23-28 66.6x33 50x41 67.16-11 41-23 68.35-30 13-19 B+

3) J. Lemmen – D. Staal A) White can often sacrifice a piece in order to attack <24> in such positions. 4.47-42! 23x32 5.34-29 36-41 6.29x9 41-47 7.9-3 47x15 8.3-17 and black can’t win, for example: 29-47 9.35-30 32-37 10.30-24! 47x15 11.3-8 19-23 12.3-12 23-28 13.12-17 28-32 14.17-21 15-38 15.25-20 38x15 16.21x43 =. B) 9...39-43! 10.13-8 43-48! 11.8-3 14-20! 12.3x26 28-32 13.25x14 24-30 14.35x24 32-37 15.26x42 48x10 B+

4) M. Durdyev – W. Poot A) 3.28-23 17-21 4.27-22 21-26 5.22-18 16-21 6.18-13 21-27 7.13-9 24-30 7...24-29 8.23x34 27-31 9.37-32 31-36 10.9-4 36-41 11.34-29 W+ 8.35x24 27-31 9.37-32 31-36 10.9-4 36-41 11.4-15 26-31 12.32-27 31x22 13.23-18 22x13 14.24-19 13x24 15.15x36 W+ B) 3.34-30! 16-21 4.27x16 18-22 5.28-23 22-27 6.23-19 27-31 7.37-32 31-36 8.19-14 36-41 9.14-10 26-31 10.10-4 31-36 10...41-46 11.4x36 46x14 leads to a lost endgame, for example: 12.30-25 14-23 13.36-13 White wants to chase away piece <17> in order to advance piece <16> to king. 23-37 14.13-9 37-23 15.9-3 17-22 16.16-11 with a simple win. 11.4-10 41-47 12.10-15 W+

5) J. Spoelstra – T. Smedinga A) 4.34-29? 24x33 5.39x28 25-30! B+

B) 9.23-19? 47-24! 10.19x30 25x34 B+ C) 9.23-18 47-24 10.18-12 24-2 11.44-39 25-30 12.39-33 30-34 13.33-28 35-40 14.28-23 40-44 15.23-19 2x35 16.45-40* 34x45 17.12-7 35-2 18.7-1 44-50 19.1-23 2-7! 20.23x1 50-39 B+ D) 9.45-40!! 47-24 10.40-34! (10.23-18? 25-30! B+) 24-13 11.44-39 and black can’t win.

6) T. Goedemoed – S. Doller (analysis) A) 4.28-22!! 17x28 5.13-8 30-35 6.8-3 35-40 7.37-32 28x37 8.39-33 (8.27-21 26x17 9.3x24 40-45 10.24-33 is also winning) 8...29x38 9.27-21 26x17 10.3x45 W+ B) Sacrificing 1...19-23? 2.28x19 17-22 isn’t good here (without a black piece on <16>) 3.27-21 26x17 4.19-14 wins easily for white. 1...30-35? 2.39-34 18-22 3.27x18 17-21 4.28-22 35-40 5.34x45 19-23 6.29-24 23x12 7.24-

S5. The endgame

216

19 12-17 8.22x11 21-27 9.11-7 27-31 10.37-32 31-36 11.7-1 36-41 12.1-18 41-47 13.32-28 47-20 14.18-36 etc. is also losing. White should immediately sacrifice a piece with 1...18-22! 2.27x18 17-21 3.18-12 3.18-13 19x8 4.28-22 8-12 5.29-23 12-17 6.22x11 21-27 7.11-7 27-31 8.37-32 31-36 9.7-1 36-41 10.23-18 30-34 11.39x30 41-47 12.18-13 26-31 = 3...21-27 4.12-7 19-24 4...27-32 5.39-33 32x34 6.7-1 W+ ; 4...27-31 is also a draw. 5.29x20 27-32 =

7) H. Wiersma – H. Jansen A) 6...39-43 7.37-31 26x37 8.27-21 16x27 9.28-22 27x18 10.1x31 W+ B) 7...44-49 8.34-48 49x21 9.37-31 26x37 10.48x17 W+ 7...44-50 8.34-48 50x42 9.48x37 W+ C) 10.34-29 45-50 11.29-45 and the king is caught with 16-11 & 45-50 W+. 8) G. van Aalten – F. Hermelink A) 1...13-19? 2.28-22 14-20 3.22-18! 12x23 4.30-25 W+ B) 1.34-30 14-19 2.28-22 12-18 3.22-17 26-31!! 4.27x36 18-22 5.17x28 13-18 = 9) K. Koopman – G.D. Nijholt A) 1.22-18 24-30 2.18x16 30-35= B) 1.32-27 12-18 Black can also make a direct sacrifice: 1 ...11-17! 2.22x11 23-28 3.11-6 19-23 4.40-35 28-32 = 2.22x13 19x8 3.27-22 8-12 4.21-16 11-17!! All other moves are losing. 5.22x11 23-28 6.11-6 12-17! Going to king won’t win. The game could continue: 7.40-35 28-33 8.38-32 33-39 9.6-1 29-33 10.1-29 33-38 11.32x34 24x33 =. 11) Marhasin - Chabiboelin 1...23-29! 2.28-23? 29x47 3.23x3 14-20! 4.3x11 6x17 5.30x8 17-22 6.26x28 47-33 7.25x14 33x21 8.32-28 21-8 9.28-23 8-2 10.36-31 16-21 11.23-18 2-8 B+

Ambushing the opponent 1) O. Lognon – A. Ivanov

7...17-22! 8.24-20 8.24-19 14x44 9.15-10 22-27 10.10-4 44-22 B+ 8...14x43 9.15-10 43-27 and white is ambushed. 2) E. Leclerq – H. Lesage The game was 71...34-40? 72.11-7 45-50 72...40-44 73.27-22 45x1 74.17-12 1x27 75.36x50 W+ 73.7-2 50x11 74.2x16 40-44 75.16-11 and black is ambushed. 71...34-39? 72.11-7 45x1 73.17-12 1x31 74.36x44 W+ Black should have played 71...45-50! 72.11-6 50x11 73.6x17 34-39 =. 3) J. Bosselaar – M. Czeladzinski 4.31-22 39-43 5.36-31 43-49 (5...43-48 6.22-17 & 7.17-3 +) 6.31-27 49-35 7.22-44 8.21-16 W+ 4) J. van Leeuwen – D. de Jong 1.9-4! Check that 1.9-3 doesn’t work! 1...33-39 1...33-38 2.4-15 38-43 3.15-38 43x32 4.31-27 32x21 5.26x17 + 2.4-22 39-43 3.26-21! etc. W+ 5) A. Chizhov – R. Boomstra A) 1 ...30-35?? 2.7-1 19-24 3.1x3 3.1x9 followd by 9-22-11 is also possible. 3...35-40 4.317 40-44 5.17-11 W+ B) After 1...30-34! 2.7-1 19-24 black escapes by going to <48>. 6) Poloenov – Heilig 1.10-5 27-32 2.33-28 25-30 3.34x25 19-24 4.28x30 32-38 5.5-28 38-42 6.25-20 W+

7) D. Douwes 1.31-26! 35x44 2.50x39 22x31 3.36x27 8-13 3...17-22 4.26-21 22x31 5.33-28 16x27 6.28x30 W+ 4.33-28 13-19 5.27-21 16x27 6.32x12 23x34 7.12x3 34-39 8.3-8 24-29 9.8-12 29-33 10.12-17 33-38 11.17x44 38-43 12.44-49 43-48 W+ 13.47-41 48-25 14.49-43 25x48 15.41-37 48x31 16.26x37 W+

8) Broekkamp 1.22-33!! 1) 1...34-40 2.16-11 40-45 3.11-7 45-50 4.33-6 26-31 5.7-1 31-37 6.1-12 50-44 7.6x50 37-42 8.12-1 W+ 2) 1...26-31 2.16-11 31-37 3.11-7 37-41 4.7-1 34-40 5.33-28 40-44 6.28x50 W+

S5. The endgame

217

9) A. van der Stoep 1.8-3 33-38 2.34-29 23x34 3.30x39 25-30 3...20-24 4.39-33 38x29 5.3-17 wins easily: 29-34 6.17-28 24-29 7.28-50 W+ 4.35x15 38-42 5.3-20 W+ 10) A. v.d. Stoep 1.31-26 9-13 2.26-21 13-18 3.21-17 14-19 4.17-11 18-22 5.11-7 22-27 6.7-2 27-31 7.2x24 32-38 8.42x33 31-37 9.24-15 37-42 9...37-41 10.15-10 W+ 10.15-20 W+ 11) T. Goedemoed 1.16-11 13-18 2.11-7 18-22 2...18-23 3.35-30 24x35 4.7-1 23-28 5.1-29 28-32 6.29-42 14-19 7.42-15 W+ 3.7-1 22-27 4.1-23 27-31 5.23x10 24-29 6.34x23 31-37 7.10-15 37-41 8.15-47 41-46 9.47-24 46x30 10.35x24 W+ 12) K. ter Braake 1.23-19 22-28 2.19x8 25-30 3.24x35 28-33 4.8-2 33-39 5.2-11 39-43 6.11-17 W+ 13) 1.8-2! 33-39 2.48x34 25-30 2...38-42 3.34-29 W+ 3.24x35 38-42 4.2-24 42-48 4...42-47 5.34-29 W+ 5.35-30 48-26 6.24-42 26x48 7.30-25 48x30 8.25x34 W+ 14) M. Sabater 1.9-3 27-32 2.3x26 32-38 3.26-48 23-28 4.13-8 28-32 5.8-2 32-37 6.48x31 38-43 7.31-27 43-48 8.27-13 48x8 9.2x13 W+ 15) 1.50-44 38-42 1...26-31 2.44-49 38-42 3.49-43 31-37 4.43-32 37x17 5.6x47 W+ 2.44-49 26-31 3.49-43 31-36 4.43-48 W+ 16) L. Schut 1.25-20 15x24 2.9-4 31-36 3.4-10 8-12 4.10x7 36-41 5.7-23 24-29 6.33x24 41-47 7.23-29 W+ 17) 1.43-38! 17-21 1...17-22 2.18-13 22x31 3.13-9 31-37 4.9-4 37-41 5.4-10 41-46 6.10-5 26-31 7.38-32 46x28 8.5x26 W+ 2.27x16 26-31 3.16-11 31-36 4.11-7 36-41 5.7-1 W+ 18) 1.43-38 17-21 2.27x16 26-31 3.16-11 31-36 4.11-7 36-41 5.7-2 W+ 19) 1.50-44 6-11 2.38-32 11-17 3.32-27 16-21 4.27x16 17-22 5.16-11 22-28 6.11-7 28-33 7.7-1 33-38 8.1-23 35-40 9.44x35 38-43 10.23-28 W+

20) 1.7-2 24-29 2.2-7 29-34 3.7x40 39-43 4.40-7 W+ 21) M. Wiering – P. Elzinga 1.37-31! 14-19 2.23x14 22-28 3.14-10 28-33 4.10-5 33-38 5.31-26 38-43 6.5-28 W+ 22) Cosmos 1.29-24 19x30 2.35x24 12-18 3.33-29 10-14 4.42-38 14-20 5.24-19 20-25 6.29-24 15-20 7.24x15 25-30 8.15-10 18-23 9.19x28 30-34 10.10-4 Black can also be ambushed by playing 10.10-5 34-39 11.28-23 39-44 12.23-19 W+ 10...34-40 11.28-23 40-44 12.23-18 W+ 23) 1.10-5 28-33 2.5-32 21-26 3.32-27 26-31 4.27x36 33-38 5.36-47 Or 5.35-30 first 5...38-43 6.35-30 43-48 7.40-34 W+ 24) 1.25-20 31-37 2.46x21 36-41 3.21-32 41-47 4.32-10 15x4 5.20-15 47x20 6.15x24 W+

Tricky endgames M. Bonnard A) 1...33-38 2.3-20 38-43 3.20-29 23x34 4.30x48 W+ B) 1...33-39 2.3-12 23-28 3.12-23 28x19 4.30-24 19x30 5.25x43 W+ C) 2...28-32 3.17x39 32-37 4.39-28 37-42 5.25-20 W+ D) 6...37-41 7.39-28 41-47 8.4-15 W+ E) 6...37-42 7.4-15 42-48 8.39-34 W+ Y. Zubov A) 6...45-50 7.22-27 50x31 8.36x16 W+ B) 9...32-38 10.39-33 38x29 11.31-27 etc. W+ C) 12.39-28 37-42 13.28-37 42x31 14.26x37 W+ 1) 1.39-33 14-20 2.33-29 20-25 3.29-24 25-30 4.47-38 30x19 5.38-32 19-24 6.32-49 2) Cosmos 1.34-25 28-32 2.37x39 38-42 3.25-20 W+ 3) G.L. de Bruijn 1.1-23 8-12 2.23x7 36-41 3.7-23 41-47 4.23-1 47x29 5.1x34 24-30 6.45-40 35x44 7.34-40 44x35 8.25x34 W+

S5. The endgame

218

4) 1.34-30 24x35 2.48-25 20-24 3.25-3 12-18 4.3-21 32-37 5.21-49 W+

5) E. Leclerc 1.30-24 26-31 1...15-20 2.24x15 26-31 3.7-2 31-37 4.2-24 37-41 5.24-19 W+ 2.24-20 15x24 3.23-19 24x13 4.7-2 W+

6) 1.49-38 33-39 2.38-49 30-35 3.42-38 39-43 4.49-40 W+ 7) 1.49-43 44x35 2.43-34 26-31 3.47-42 W+ 8) 1.8-3 38-43 2.3-21 43-49 3.21-16 49-44 4.45-40 44x35 5.37-19 W+ 9) F. Hermelink 1.48-42 12-18 2.6-1 18-23 3.1x29 36-41 4.29-20 5-10 5.15x4 41-46 6.4-27 21x32 7.42-37 32x41 8.20-47 W+

10) M. Sabater 1.13-8 23-29 2.8-2 7-11 3.2x16 29-34 4.14-10 34-40 5.10-5 40-45 6.5-23 17-22 6...45-50 7.23-28 50x22 8.16-27 22x31 9.36x27 W+ 7.23-40 45x34 8.16-7 34-39 9.7-11 W+ 11) D. v.d. Berg 1.43-39 35-40 1...21-27 2.7-2 27-32 3.2-19 32-38 4.19-37 35-40 5.39-34 40x29 6.36-31 W+ 2.39-34 40x29 3.7-2 21-27 4.2-16 27-31 5.36x27 29-33 6.27-21 26x17 7.16-43 17-22 8.43-16 22-28 9.16-43 W+ 12) Guichet 1.1-6 17-21 1...17-22 2.39-33 30x39 3.33x44 25-30 4.44-40 W+ 2.6x33 21-27 3.33-38 27-31 4.38-49 W+ 13) Gregoire 1.34-29 7-12 2.29-23 1-7 3.37-31 7-11 4.31-26 11-16 5.23-19 12-18 6.19-14 18-23 7.14-10 23-29 8.10-5 16-21 9.27x16 17-22 10.5-32 29-34 11.32-49 22-28 12.16-11 28-33 13.11-7 34-40 14.49x35 33-38 15.35-19 38-43 16.7-2 43-49 17.19-35 49-32 18.26-21 32x16 19.35-49 W+ 14) A.M. Olsen 1.18-12 21-26 2.41-36 27-32 3.12-7 1x12 4.6-1 12-17 5.1-6 17-21 6.6-11 21-27 7.11-16 26-31 8.16-21 27x16 9.36x38 15) O. Dijkstra 1.24-20 14x25 2.36-47 32-37

2...32-38 3.45-40 25-30 4.34x25 42-48 5.47x33 48-37 6.33-42 37x48 7.40-34 48x30 8.25x34 W+ 3.47x24 25-30 3...37-41 4.24-47 41-46 5.47-41 46x40 6.45x34 W+ 4.24x35 37-42 5.35-44 42-48 6.44-39 W+ 16) 1.13-9 47x36 2.39-33 36-41 3.33-28 41x3 4.22-17 3x21 5.16x36 W+ 17) 1.35-30! 1.17-12? 24-30! 2.35x22 7x27= 1...24x35 2.17-12 18-22 3.12x1 19-24 4.1-23 22-27 5.34-30 27-32 5...27-31 6.30x19 35-40 7.23x45 31-37 8.45-7 37-42 9.7-2 W+ 6.23x41 35-40 7.30x19 40-45 8.19-14 with a special kind of ambush: 45-50 9.14-10 W+ 18) Everat 1.12-8 35-40 1...11-17 2.8-2 35-40 3.2-35 W+ 2.50-44 40x49 3.8-3 49x21 4.26x6 W+ 19) M. Douwes 1.12-8 30-34 2.8-2 24-30 3.35x13 34-39 4.2-16 6-11 5.16x2 39-43 6.45-40 43-49 7.2-8 49x35 8.8-2 35x8 9.2x13 W+ 20) P. Schaaf 1.30-25 22-27 1...19-24 2.7-2 24-29 3.33x24 22-27 4.2-16 27-31 5.16-32 W+ 2.33-29 23x34 3.7-2 19-23 4.25-20 15x24 5.2x21 W+ 21) P. Darrigan 1.30-35 44-49 2.33-28 49x23 3.35-19 23x46 4.19x5 W+ 22) I. Weiss 1.31-26 21-27 2.26-21 27-31 3.13-9 16x27 4.9-3 31-37 5.28-22 27x18 6.3-9 18-23 7.9-14 W+ 23) M. Douwes 1.21-17 20-25 2.30-24 15-20 3.24x15 25-30 4.15-10 30-34 5.10-5 34-39 6.5-32 6-11 6...39-44 7.32-49 44-50 8.49-43 50x11 9.27-21 16x27 10.43x7 W+ 7.17x6 39-44 7...16-21 8.27x16 39-44 9.32-21 W+ 8.32-28 44-49 9.6-1 49x21 10.28-11 16x7 11.1x26 W+ 24) O. Dijkstra 1.1-6 32x23 2.34-29 23x34 3.6-28 37-42 4.28-39 34x43 5.45-40 35x44 6.50x26 W+

S5. The endgame

219

Nut shells

1) J.F. Moser 1.32-43 12x26 2.36-31 26x48 3.27-21 16x27 4.43x25 W+ 2) Van Tol & Prooijen 1.24-19 48x30 2.19-14 30x8 3.10-5 8-26 3...8-35 4.18-13 35x8 5.14-9 3x14 6.5x3 W+ 4.18-12 26x8 5.14-9 3x14 6.5x3 W+ 3) R. Bergsma 1.24-42 45x25 2.42-48 W+ 4) F. Hermelink 1.32-28 23x43 2.45-40 35x44 3.31-48 44-50 4.48x26 49x21 5.26x17 50x11 6.16x7 W+ 5) J.J. van Tol & - Van Prooijen 1.20-25 19x46 1...19x50 2.32-28 50x20 3.25x9 W+ 2.39-33 46x5 2...12x23 3.33-29 23x34 4.25x19 W+ 3.25-39 12x23 4.33-28 23x32 5.39x46 W+ 6) K.W. Kruijswijk 1.42-38 32x43 2.31-48 33-39 2...43-49 3.48-30 49x40 4.30x39 40-12 5.39-34 12x40 6.35x44 W+ 3.44x33 43-49 4.33-29 24x33 5.50-44 49x40 6.35x44 12-17 6...45-50 7.48-26 50x39 8.26x43 W+ 7.44-40 45x34 8.48x21 33-39 9.21-49 W+

Draughts painting in The Hermitage (Saint Petersburg)

S6. Finishing off the game

221

One of the hardest things to master in draughts is winning a winning position! Therefore the art of finishing off winning positions correctly needs special attention. Experience shows that often there is only one way to win a winning position, so any deviation from the correct line will result in a draw. Real strong players excel in finishing of positions with great precision. Players like Sijbrands, Chizhov and Georgiev are masters in this art of finishing off positions. A player like Sijbrands will never lose focus in a winning endgame. He takes the game seriously until the opponent resigns! Chizhov had always good positions in the beginning of his career, but had problems finishing them off. Later he became a real master in finishing off winning positions, resulting in no less than 10 world titles! Georgiev always plays with a lot of risk, striking whenever he gets the opportunity, but not only that. When confronted with a bad position he defends very accurately as well! The best way to make the exercises is trying to calculate the winning in without touching the pieces. The amount of time you can use is given at each exercise. If this is too hard for you, you can try to solve the exercise by using a board and pieces (analysing). I apologise for showing many position from my own practice. I might seem egocentric... I don’t pretend to be a crack in finishing off the game, on the contrary! It has gone wrong so many times (also in some of the shown examples). Therefore I am aware of the complexity of finishing off games correctly. I just use these positions because one can learn so much from them!


Centre play

Classics Positions with 15/36 Small positions

Playing with the king Endgame positions Solutions In this section plenty of positions are presented to practice the art of finishing off winning positions. Solving them is an excellent training for your calculation skills. The number of stars indicates the level of the exercise. means not very hard (but also

not so easy!) means pretty hard means difficult, if you solve this

you are a real crack!


222

Centre play

J. Bus

1) White can launch an attack. Black’s best defence contains a double sacrifice, but after that white wins with a shot using the majority capture rule.

Use 5 minutes. Try to calculate the

winning line without touching the pieces!

Y. Anikeev – R. Boomstra blitz

Black to move

2) How would you convert your advantage into a win, playing with black?

Use 5 minutes.

J.M. Ndjofang – A. Schotanus

3) White has a strong centre position with an active arrow-formation at the right wing. Try to calculate the winning variation. In the main line white uses a sacrifice!

Use 6 minutes.

4) White can win this position with precise play. In the endgame he wins sharply!

Use 8 minutes.


223

E. van Dusseldorp

5) White can win by forcing a right wing attack. He uses a sacrifice in the main line to convert his advantage into a win.

Use 12 minutes

6) White can win the endgame by using some tricks, especially a trick catching the opponent’s king in the trictrac-zone!

Use 10 minutes

T. Goedemoed – H. Spanjer

(analysis rapid game) 7) White wins in a long, forced line of 16 moves...

Use 10 minutes!

J. Groenendijk – R. Hakvoort

8) White has a strong centre and a left wing attack. Piece <50> is a strong defender. Black’s pieces are on the edge of the board. How can white convert his advantage into winning the game?

1.37-32 15-20

White has to make a choice now between 32-28 & 32-27. 8) Which one of these moves is best?


224

Classics

Punishing the graveyard position

1) An easy win for white.

Use only 2 minutes to find the winning line!

T. Goedemoed – P. Jongsma

2) After the introductory shot white needs a trick to win the endgame, catching black’s king.

Use 7 minutes

Podkowa

3) White can win using the podkowa, freezing the opponent out. Try to find the right line without touching the pieces!

Use 4 minutes

4) White can force a well-known winning position (Position Barteling).

Use 5 minutes


225

5) Helped by some tricks white can freeze out the opponent.

Use 7 minutes!

Wing control

6) How to finish the position in which white controls the wings?

Use 6 minutes!

W. van der Wijk – A. Chizhov

Black to move 7) Try to find the winning plan for black!

Use 10 minutes!

W. Wesselink – M. de Kruijff

8) This position was shown in ACID 3, but can you find the winning lines without checking it? White needs tactics to force the win!

Use 10 minutes!


226

9) The first moves aren’t that hard, but deep calculation is needed to see how the endgame wins!

Use 14 minutes!

L. Sekongo - J. de Vries

Black to move

10) In one of the lines a position from centre play emerges! Try to find the winning lines for black!

Use 12 minutes!

Wouter Sipma celebrating his victory, watched

by a young Roel Boomstra

Spectators kibitzing a blitz game Goedemoed – Kroesbergen


227

Right wing attack

1) Black will break through, but white takes care he won’t make it to king.

Use 4 minutes!

2) White forces a quick strategic win!

Use 3 minutes!

3) How would you finish this position off?

Use 4 minutes!

T. Goedemoed - P. Tuik

4) If white finds the right candidate move, the rest isn’t so hard!

Use 5 minutes!


228

5) White possesses all strategic squares, but it’s not over yet. Black will play a sacrifice at the next move, but white can still win the endgame with a surprising move.

Use 8 minutes!

N. Floor – L. Leimena

6) White uses tactics in order to win.

Use 7 minutes!

R. Twilhaar – D. Spieker

7) White has a strong right wing attack. The game was 1.28-23? A) How could black have made a draw after this move? White could have won by playing (analysis of M. Palmer) 1.24-20! 15x24 2.29x9 13x4 3.25-20 2-7 4.20-14 7-11 5.28-23 18x29 6.33x24 22-28 7.24-19 17-21 8.19-13 11-16 9.14-9 28-32 10.38x27 21x32 B) How can white finish off the game in a surprising way?

8) White wins in a long, forced line.

Use 10 minutes!


229

M. Nogovytsina – R. Heusdens

Black to move 9) Try to find the best way to convert the advantage into a win!

Use 10 minutes!

E. Vatoetin

10) White needs to play this position very accurately to win the endgame in a nice way.

Use 12 minutes!

J. de Haan - T. Goedemoed

Black to move

11) Black used a little trick in the endgame, making a shot with his king, to win the game.

Use 8 minutes!

T. Goedemoed - J. Algra 12) White can finish off the game with a shot with his king again!

Use 5 minutes


230

W. v.d. Wijk – E. Heunen

13) There are only a few pieces left, but white can still win.

Use 9 minutes

J. Ambags – R. Sloot (analysis)

14) No single inaccuracy is allowed to win this position! We showed this position already in ACID part 2, but it is good to think about it yourself now!

Use 10 minutes

O. Dijkstra

15) White plays against an attack. He forces a great win in this composition. First he beleaguers piece <28>, after which black wins back the piece. White then forces a breakthrough shot to <10> finishing the game with a king sacrifice and opposition.

Use 13 minutes

A. Mogiljanski – J. Bom

16) Find out if white has to play 20-14 or 20-15 in order to win.

Use 15 minutes


231

Positions with 15 / 36

1) White can force a quick win!

8 minutes

A. Baliakin – C. van Dusseldorp

2) White has to choose the right plan in order to win analytically!

Use 15 minutes.

T. Goedemoed – C. Thio

3) White has to select the right candidate move in order to reduce black’s space even more, winning convincingly.

Use 7 minutes.

E. Vatoetin

4) White uses tactics to force the win.

Use 6 minutes.


232

Small positions

R. Sall – G. te Raa

1) The game ended in a draw, although white is able to win. Can you calculate a winning line without touching the pieces?

Use 4 minutes

2) White forces a quick win.

Use 4 minutes

3) Black will go to king, but his king has no long life...

A. Chylewska - M. Kus

4) White needs one sharp in the winning line move to win the endgame quickly.

Use 4 minutes


233

A. van der Stoep

5) How does white force the win in this composition?

Use 8 minutes

F. Hermelink

6) White can force a simple win, ending with opposition.

Use 3 minutes

O. Dijkstra

7) White forces a 3 x 3 exchange leading to an endgame which wins by tactical means.

Use 7 minutes

L. Springer

8) Although black will get a king, white wins by locking the king.

Use 8 minutes


234

O. Dijkstra

9) White forces opposition.

Use 5 minutes

O. Dijkstra

10) In the endgame white needs a brilliant trick to win!

Use 12 minutes

A. Kuyken

11) White wins in a long line (19 moves deep).

Use 10 minutes

E. Mereno

12) White wins, laying an ambush in the main line.

Use 10 minutes


235

A. Kuyken 13) If you can solve this one you’re a real crack! White wins in no less than 26 move. In the end the black king is locked in the 2/35/49/26 quadrant.

Use 15 minutes

M. Raichenbach - Grandmougin

14) White could have won with logical moves.

Use 8 minutes

15) White needs a little trick in the endgame in order to win.

Use 7 minutes

T. Smedinga

16) In the end black is ambushed.

Use 7 minutes


236

Playing with the king

J. Noome

1) 3 minutes

Huegenin

2) 3 minutes

3) 5 minutes

Precise manoeuvring with the king is needed.

White plays and wins

4) 5 minutes

White sacrifices his king to get a new one.

5) 7 minutes

How does white win?

6) 5 minutes


237

J. de Vries - J. Wilbrink

7) 5 minutes

K. Chaletski

8) 5 minutes

9) 3 minutes

10) 3 minutes

J. van Leeuwen – C. Mulder

11) 7 minutes

Ogordnikov – Gendlerman

12) 5 minutes


238

Endgame positions

1) 3 minutes

2) 3 minutes

U. Kesker – A. Kulvet

5 minutes

N. Sadowska – S. Veltman

Black to move

4) 6 minutes

H. Ruesink – A. Ottink

5) After 1... 12-18? 2.23x12 23-28 white won!

5 minutes

P. v.d. Stap – P. Schep

6) 7 minutes


239

H. Stroetinga - J. Smits

7) 7 minutes

R. Heusdens – R. Clerc Black to move

8) 8 minutes

M. Rentmeester – M. v.d. Klis

9) 9 minutes

O. Budis – Y. Anikeev

Black to move

10) 12 minutes

11) 12 minutes

E. Prosman – J. Pawlicki blindfold game

12) 8 minutes


240

L. Schut

13) 14 minutes

L. Springer

14) 12 minutes

15) 10 minutes

Libonati

16) 8 minutes

17) 10 minutes

18) 9 minutes


241

Solutions

Centre play 1) J. Bus 1.33-29! 14-20 1...4-10 2.40-35 10-15 3.30-25 15-20 4.35-30 W+ 2.40-35 20-25 3.30-24 19x30 4.35x24 4-9 5.28-23 18-22 6.23-19 22-28 7.19x8 9-13 8.8x19 28-33 9.24-20! 25x34 10.38x40 W+ 2) 1...8-12! In the game black broke his own strong formation 14/19/23 with 1...14-20 2.45-40 8-12 3.17x8 3x12 4.31-27 and white escaped. 2.17x8 3x12 3.31-27 6-11 4.36-31 12-17 5.31-26 11-16 6.45-40 15-20 B+ 3) J.M. Ndjofang – A. Schotanus 1.30-24! 1.29-24?? 21-27! 2.24x31 26x48 B+ 1...19x30 2.35x24 26-31 2...9-13 3.41-37 18-22 4.28x17 21x12 5.32-27 14-19 6.25-20 19x30 7.29-24 30x19 8.20-14 W+ 3.28-22!! 18x38 4.42x33 21-27 5.33-28 9-13 6.29-23 W+ 4) 1.34-29 24-30 2.29-24! 30x19 3.33-29 19-24 4.29x20 13-19 5.20-15 19-23 6.28x19 18-22 7.27x18 21-27 8.32x21 16x27 9.19-13! 27-31 10.37-32 31-36 11.13-8 36-41 12.8-2 41-47 13.2-24 47x20 14.15x24 26-31 15.32-27 31x13 16.24-20 W+ 5) E. van Dusseldorp 1.34-30! 20-25 2.30-24 25-30 2...12-18 3.27-22 18x27 4.35-30 25x34 5.33-29 34x23 6.28x8 17-22 7.8-3 27-31 8.3-17 31x33 9.17x44 26-31 10.44-28 31-36 11.28-23 21-26 12.32-27 26-31 13.27-22 16-21 14.23-1 W+ 3.33-29 30x19 4.29-24 19x30 5.35x24 12-18 6.38-33 17-22 6...26-31 7.37x26 17-22 8.28x17 21x12 9.32-28 12-17 10.33-29 16-21 11.27x16 18-22 12.28-23 22-27 13.23-19 13-18 14.19-14 27-32 15.14-9 32-37 16.9-4 18-23 17.29x18 37-42 18.24-20 15x24 19.4-15 W+ 7.28x17 21x12 8.33-28 13-19 9.24x22 15-20 10.22-18 12x23 11.28x19 20-25 12.19-14 25-30 13.14-9 30-34 14.9-4 34-39 15.4-22 39-43 16.22-4 26-31 17.27x36 16-21 18.36-31 21-26 19.31-27 W+ 6) 1.28-23 24-29 2.23x34 13-18 3.44-39! 16-21 4.27x16 18-22 5.16-11 22-27 6.11-7 27-31 7.37-32 31-36 8.7-1 36-41 9.32-27! 41-46 9...41-47 10.39-33!! 47x45 11.27-22 W+

10.1-6 46-5 11.34-29 5-46 12.29-24 46-5 13.39-33 5-46 14.33-29 46-5 15.27-22 W+ 7) T. Goedemoed – H. Spanjer (analysis rapid game) 1.28-23 18x29 2.34x23 5-10 3.23-19 11-17 4.32-28! 17-22 5.28x17 21x12 6.19-13 10-14 7.31-27 14-19 8.13x24 12-17 9.40-35! 16-21 10.27x16 17-22 11.16-11 22-27 12.11-7 27-31 13.37-32 31-36 14.7-1 36-41 15.32-27 41-47 16.1-29 W+ 8) J. Groenendijk – R. Hakvoort 2.32-27! is the best move, preventing black form playing 12-18 and making an exchange. The game was 2.32-28? 12-18 3.21-16 20-24 4.50-44 8-12 5.17x8 6-11 6.16x7 19-23 7.28x19 24x11 = After 2.32-27! the game could continue: 2...20-24 2...19-23 3.50-44 20-24 4.33-28 23x32 5.27x38 12-18 6.21-16 30-35 7.38-33 24-30 8.33-28 8-13 9.16-11 18-22 10.34-29 22x24 11.11-7 24-29 12.7-2!! 30-34 13.2x42 34x43 14.42-48 43-49 15.17-11 49x40 16.48-26 6x17 17.26x45 W+ 2...8-13 3.17x8 13x2 4.27-22 30-35 5.22-17 20-24 6.50-44 2-7 7.21-16 and white will win. 3.27-22 30-35 4.50-44 8-13 5.17x8 13x2 6.22-17 2-7 7.21-16 35-40 8.34x45 19-23 9.44-40 24-29 10.33x24 23-28 11.24-19 28-32 12.19-14 32-37 13.14-10 37-41 14.10-5 41-47 15.5-28 47-33 16.16-11 33x35 17.11x2 35-49 18.28-44 49x35 19.45-40 35x11 20.2x16 25-30 21.16-43 30-35 22.43-49 6-11 23.49-44 11-16 24.44-49 W+

Classics 1) Punishing the graveyard position After 1.39-33 6-11 2.26-21 black has no good move left, since 13-18 and 8-12 are met by 25-20 W+ 2) T.Goedemoed – P. Jongsma 1.35-30 24x35 2.37-31 26x28 3.33x15 23-29 4.34x23 35-40 5.15-10 40-45 6.39-34! 6.10-5 also wins: 25-30 7.23-19 30-35 8.19-14 35-40 9.5-10 45-50 10.39-34 40x29 (10...50x11 11.34x45 W+) 11.10-5 50x6 12.27-22 6x10 13.5x34 W+ 6...45-50 7.10-5 50x6 8.34-30 25x34 9.27-22 6x19 10.5x40 W+ 3) Podkowa From G. Steenbergen – A. Slot 1.33-29 17-21 2.26x17 11x22 3.31-26 22x31 4.36x27 23-28 5.41-37 6-11 6.26-21 19-23 7.30-24 W+


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4) 1.39-33! 1.31-27 11-16 2.39-33 26-31 3.33x4 31x31 = 1...20-24 2.31-27 11-16 3.34-30 10-15 4.40-34 29x40 5.45x34 The position Barteling has emerged on the board. Black is frozen out easily. 15-20 6.34-29 23x34 7.30x39 18-23 8.39-34 13-18 9.34-30 23-29 10.28-22 18-23 11.33-28 W+ 5) 1.39-33! 13-18 1...17-21 2.26x17 12x21 3.37-31 21-26 4.33-29 24x22 5.27x9 26x28 6.9-3 W+ 2.43-38 17-21 3.26x17 12x21 4.37-31 21-26 4...8-12 5.31-26 12-17 6.45-40 17-22 7.28x17 21x12 8.26-21 12-17 9.21x12 18x7 10.27-21 16x27 11.32x21 7-12 12.38-32 W+ 5.28-22 26x30 6.22x2 W+

6) 1.39-34! 16-21 1...24-29 2.30-24! 19x39 3.28x10 15x4 4.27-21 16x27 5.32x43 W+ 2.27x16 24-29 3.26-21 17x26 4.16-11 29x40 5.35x44 15-20 6.11-7 26-31 7.7-1 31-36 8.38-33 20-24 9.32-27 9.1-7 24x35 10.7-1 is also possible. 9... 23x21 10.1x26 W+

7) W. v.d. Wijk – A. Chizhov Wch 2011 35...9-14! A) 36.31-26 7-12 37.30-25 12-18!! An idea worth remembering! 38.43-39 3-9! 39.40-34 24-30 40.35x24 20x40 41.45x34 15-20 B+ B) 36.30-25 7-12 37.27-22 37.33-29 24x42 38.43-38 42x22 39.27x9 17-22 40.32-27 22-28 41.9-4 28-33 with a winning endgame for black, partly due to the strong base piece at <1>. 37... 24-30!! 38.35x24 19x30 39.28x10 17x48 40.25x14 15x4 B+

8) W. Wesselink – M. de Kruijff 1.47-41! 6-11 1...3-8 2.41-36 8-12 3.22-17 9-14 4.17x8 13x2 5.27-22 18x27 6.28-22 27x18 7.37-31 26x28 8.33x13 19x8 9.34-30 25x34 10.39x10 W+ 2.41-36 3-8 3.36-31 8-12 3...9-14 4.34-30 25x34 5.39x30 20-25 6.44-39 25x34 7.39x30 23-29 8.43-39 8-12 9.28-23 19x17 10.30x10 13-19 11.33x22 17x28 12.32x23 21x34 13.35-30 34x25 14.10-4 25-30 15.4-22 12-17 16.22-44 30-34 17.23-19 17-21 18.44x6 21-27 19.31x22 34-39 20.22-18 39-43 21.6-44! 43-49 22.44-35 W+ 4.22-17 11x22 5.28x8 13x2 6.33-29 24x42 7.37x48 26x28 8.44-40 21x32 9.39-33 28x30 10.35x4 W+ 9) 1.33-28 17-22

1...18-23 2.39-33 W+ 2.28x17 21x12 3.39-33 18-23 3...19-23 4.33-28 14-19 and both 5.28-22 and 5.38-33 29x38 6.32x43 23x21 7.26x8 win. 4.27-22 12-18 5.22x13 19x8 6.32-27 8-13 6...8-12 7.26-21 12-18 8.21-17 14-19 9.25-20 24x15 10.33x22 W+ 7.26-21 13-19 8.21-17 14-20 9.25x14 19x10 10.17-12 23-28 11.33x22 24-30 12.12-7 30-34 12...10-14 13.7-2 30-34 14.40-35 34-39 15.22-17 16-21 16.27x16 39-44 17.16-11 44-49 18.2-24 W+ 13.40-35 34-39 14.27-21! 16x18 15.7-1 18-23 16.35-30 29-33 16... 39-44 17.38-33 29x38 18.1x32 W+ 17.1x48 33x42 18.48x5 W+ 10) L. Sekongo – J. de Vries 1...11-16! 1... 23-29? is too early: 2.31-27 22x31 3.36x27 18-23 (17-22 32-28-23 =) 4.33-28 11-16 5.27-22 17-21 6.22-18 23x12 7.28-23 etc. = 2.31-27

2.31-26 16-21 3.36-31 23-29 4.31-27 22x31 5.26x37 21-26 6.33-28 18-23 B+

2.32-27 17-21 3.38-32 23-29 4.31-26 22x31 5.36x27 29x38 6.26x17 38-42 7.32-28 24-29 8.27-21 16x27 9.17-11 29-33 10.28x39 42-47 11.11-7 27-32 12.30-24 47x15 13.7-2 19-23 14.39-34 18-22 15.2-19 22-28 16.19x5 32-37 etc. B+

2...22x31 3.36x27 17-22 4.27-21 16x27 5.32x21 22-27 6.21x32 18-22 Compare the position in the Centre play section! It continues 7.32-27 22x31 8.38-32 31-36 9.32-28 23x32 10.33-29 24x33 11.30-24 19x30 12.35x24 32-38 13.24-20 14-19 14.20-15 38-43 15.15-10 43-49 16.10-4 49-27 17.4x31 36x27 18.25-20 19-24 19.20x38 27-31 B+

Right wing attack

1) J.H. Brabers 1.38-32 15-20 2.24x15 25-30 3.15-10 30-34 4.32-28! 22x33 5.10-4 34-40 6.4-22 W+ 2) 1.32-27 22x31 2.36x27 10-14 3.24-20 15x24 4.29x9 13x4 5.33-28 4-9 6.25-20 W+ 3) 1.37-31! 7-12 1...18-22 2.29-23 7-12 3.33-29 12-17 4.23-18 etc. W+ 2.31-27 12-17 3.33-28 4) T. Goedemoed – P. Tuik 1.31-26!


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The game was drawn after 1.29-23? 9-14 =. 1... 12-18 1...9-13 2.29-23 2.33-28 22x33 3.29x38 is also winning. 2... 13-18 3.33-28 W+ 2.21-16 22-27 3.33-28 18-22 4.28x17 27-32 5.17-12 32-37 6.12-7 37-41 7.29-23 41-47 8.7-2 47x20 9.16-11 20-38 10.11-6 and white will become dominant. 5) T. Mbongo – J. Algra 1.24-19! 16-21 2.27x16 18-22 3.19-13 22x24 4.13-9 17-22 4...24-29 5.34-30 29x18 6.9-3 25x34 7.3x11 W+ 4...24-30 5.9-3 30x39 6.16-11 17x6 7.3x44 W+ 5.32-28!! 22x33 6.9-4 W+ 6) N. Floor – L. Leimena 1.23-19 17-21 2.27x16 26-31 3.16-11 31-37 4.11-6 37-41 4...37-42 5.19-13 18x9 6.34-30 25x32 7.6-1 20x29 8.1x48 9-14 9.48-39 W+ 5.28-22 18x27 6.34-30 25x14 7.6-1 20x29 8.1x9 W+ 7) R. Twilhaar – D. Spieker (analysis) A) 1.28-23 17-21 2.23x12 2-8 3.12x3 21-26 4.3x20 22-28 5.33x22 13-19 6.24x13 15x42 7.47x38 36x47 = B) 11.9-3 31-37 12.3-26! 37x46 13.26-37! 32x41 14.13-8 W+

8) 1.29-24 17-22 2.28x17 21x12 3.33-28 13-19 4.24x22 14-19 5.28-23 19x17 6.27-22 17x28 7.32x23 16-21 8.23-19 12-18 9.19-14 18-22 10.14-9 22-28 11.9-3 28-33 12.3-25 33-38 13.25-48 38-42 14.37-32 26x28 15.48x33 W+ 9) M. Nogovytsina – R. Heusdens The best plan for black is transporting the golden piece to <17>. 1...3-8! 1...13-18? (weakening his position) 2.37-31 3-8 as played in the game gives white the opportunity to make a draw: 3.33-29 24x44 4.38-32 28x30 5.35x2 44-50 6.2-11 = 2.37-31 8-12 3.31-26 12-17 4.42-37 24-30 5.35x24 19x30 6.34-29 30-35 7.29-23 28x19 8.37-32 35-40 9.32x12 40-44 10.39x50 13-18 11.12x23 19x48 B+ 10) E. Vatoetin 1.33-29! 11-17 2.34-30 14-19 3.37-32 17-21 4.27x16 26-31 5.32-27 31x33 6.29x38 18-22 7.16-11! A crucial move: black isn’t stopped going to king, but will be ambushed!

22-27 8.11-7 27-31 9.7-2 31-36 10.30-25 19x30 11.2x35 15-20 12.25x14 36-41 13.35-8 W+ 11) J. de Haan – T. Goedemoed 1...14-19! 2.34-29 25-30 3.29x20 15x24 4.44-39 19-23 5.37-32 27-31 6.33-28 23-29 7.28-22 31-36 8.22-17 36-41 9.17-11 41-46 10.32-27 29-33! 11.38x20 46-19 12.35x24 19x7 B+ 12) T. Goedemoed – J. Algra 1.28-22 18-23 2.24-19 23-29 3.19x10 29-34 4.10-5 34-39 5.37-31! 26x17 6.5-41 21x32 7.41x44 W+ 13) W. v.d. Wijk – E. Heunen 1.38-33 23-29 1...9-14 2.33-28 14-20 3.24x15 23-29 4.15-10 29-34 5.10-4 W+ 2.24-19 29x38 3.32x43 11-17 4.43-38 The game was 4.37-31? 18-23 5.19x28 17-21 with a draw 4...17-22 4...17-21 5.38-32 21-26 6.19-13 9-14 7.13x22 14-19 8.22-18 19-24 9.18-12 24-29 10.12-7 29-34 11.37-31 (11.7-1 26-31 12.37x26 34-39 will also win.) 11...26x28 12.27-22 28x17 13.7-1 17-22 14.1x40 22-28 15.40-49 28-33 16.49-43 W+ 5.27-21! 16x27 6.38-33! The ordinary 6.19-13 also wins. W+ 14) J. Ambags – R. Sloot (analysis) 1.41-37 After 1.41-36? 8-13 2.36-31 25-30 3.24x35 13-19 white can't win. 1...8-13 1...8-12 2.28-22 18-23 3.22-18 W+ 2.37-32 13-19 2...25-30 3.24x35 13-19 4.35-30 18-23 5.28-22 23-29 6.32-28 19-23 7.28x19 29-33 8.19-14 33-39 9.14-9 39-43 10.30-25 43-48 11.22-18! White protected all pieces and will win. 3.24x22 25-30 4.22-18 30-34 5.18-13 34-39 6.13-9 39-44 7.28-23! 44-50 7...44-49 8.9-4 and black's king is caught at the next move, for example 49-40 9.32-28 40x36 10.28-22 8.23-19! White protected his pieces well. He will become dominant and win. 15) 1.34-29! 7-12 2.48-43 16-21 2...3-9 3.38-32 Or also 3.40-35 16-21 4.35-30 3...27x38 4.43x23 13-19 5.42-38 19x28 6.38-32 9-13 7.32x23 13-19 8.25-20 W+ 3.38-32 27x38 4.43x23 21-27 This way black wins back the piece. 5.25-20! 14x25 6.40-35!


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6.40-34 3-9 7.42-38 27-31 8.37x26 9-14 9.26-21 14-20= 6...3-9 7.42-38! 7.47-41 27-31! 8.37x26 18-22 isn’t winning! 7...9-14 7...27-31 8.37x26 9-14 9.26-21 13-19 10.21-16 19x28 11.16-11 W+ 8.35-30! 25x34 9.29x40 18x29 10.40-34 29x40 11.49-44 40x49 12.47-41 49x32 13.37x10 27-32 14.10-5 32-38 15.5-32 38x27 16.41-37 W+ 16) A.Mogiljanski – J.Bom 1.20-15! The game was 1.20-14? 28-32 2.38-33 23-29 3.33x24 17-21 4.26x37 4-10 5.31x13 10x48 = 1...4-9 1...28-32 2.38-33 23-28 3.33-29 W+ 2.49-44 9-14 3.44-39 28-32 4.34-30 23-28 5.30-25 18-23 6.39-34 12-18 6...23-29 7.34x23 28x19 8.25-20 14x25 9.15-10 12-18 10.10-4 18-23 11.38-33 23-28 12.33-29 25-30 13.4-15 30-35 14.29-23 19-24 15.15x29 28x19 16.29-7 W+ 7.34-30 23-29 8.30-24 29x20 9.15x24 18-23 10.24-19 23-29 11.19x10 29-34 12.43-39 32x43 13.39x48 34-40 14.10-5 28-33 15.5-28 33-38 16.28-50 40-45 17.25-20 W+

Positions with 15 / 36

1) G. Heerema – M. van Ballegooijen 1.39-34! 18-23 1...17-22 2.27-21 16x27 3.25-20 14x25 4.38-32 27x29 5.34x3 25x34 6.3x8 W+ 1...15-20 2.34-29 17-22 3.37-32 22x31 4.26x37 18-22 5.29-23 19x39 6.30x28 W+ 2.25-20 14x25 3.27-22 17x39 4.34x43 25x34 5.40x7 W+

2) A. Baliakin – C. van Dusseldorp 1.36-31! 3-9 2.34-30? 2.28-23! 19x28 3.32x23 11-17 4.15-10 4x15 5.23-19 13x24 6.29x20 15x24 7.37-32 26x28 8.33x4 24-30 9.34x25 35-40 10.39-34 40x29 11.4-10 29-34 12.10-28 17-21 13.38-32 34-40 14.25-20 40-45 15.28-50 12-18 16.20-15 18-22 17.50x3 21-26 18.3-20 45-50 19.20-47 50-45 20.15-10 W+ 2...35x24 3.29x20 18-23 4.27-22 12-18? 4...11-17! 5.22x11 16x7 6.31-27 7-11 7.39-34 = 5.31-27 11-17 6.22x11 16x7 7.20-14! W+

3) T. Goedemoed – C. Thio White should have played 1.38-33 14-20 Or 1...7-12 2.33-29 14-20 3.28-23 19x28 4.32x23 with the same position.

2.33-29 7-12 3.28-23 19x28 4.32x23 18-22 4...20-25 5.39-34 leaves black with no good move. 5.30-25 22-27 6.25x14 26-31 7.37x26 27-32 8.23-19 and white wins, for example: 8... 13-18 9.14-9 32-37 10.9-4 37-41 11.4x31 36x27 12.47x36 27-32 13.19-14 etc. W+

4) E. Vatoetin 1.49-44! 10-14 1...22-27 2.32x21 16x27 3.37-32 27-31 4.32-27 31x22 5.33-29 24x33 6.39x17 12x21 7.47-41 36x47 8.25-20 15x24 9.38-33 47x29 10.34x5 W+ 2.33-29 24x33 3.39x17 12x21 4.37-31 36x27 5.38-33 27x29 6.34x3 W+

Small positions 1) R. Sall – G. te Raa 1.38-33! 13-18 2.30-25 18-22 3.25-20 19-23 4.20-14 23-28 5.33-29 27-31 The point is that 5...27-32 is met by 6.29-23! 28x10 7.37x17 W+. 6.37x26 28-32 7.14-10 32-38 8.10-4 + 2) 1.22-18 19-23 2.18-12 23x34 3.12x3 34-39 4.17-11 6x17 5.3x21 The endgame of Dutchman E. Van Emden (from the 18th century!) has emerged: 5... 39-44 6.21-17 W+ 3) 1.37-32 1.37-31? 18-22= 1...11-16 2.32-27 17-22 3.28x17 19-23 4.17-11 23x34 4... 16x7 5.33-28! 23x21 6.26x17 W+ 5.11-7 34-40 6.7-1 40-45 7.1x23! 45-50 8.23-28 and the black king is caught. W+

4) A. Chylewska - M. Kus 1.29-24 14-19 1... 22-28 2.21-17 etc. W+ 2.24x13 18x9 3.25-20 7-12 4.20-15! The game was drawn after 4.21-16 22-27 5.16-11 27-31 6.11-6 31-36 7.6-1 9-13 8.1x4 36-41 =. 4...9-14 5.21-16 22-27 6.16-11 27-31 7.11-6 31-36 8.6-1 12-17 9.1-23 W+

5) A. van der Stoep 1.33-28 26-31* 2.37x26 11-17 3.29-23! 17-22 4.28x8 19x37 5.38-32 37x28 6.8-2 7-12 7.2-16 28-33 8.26-21 12-18 9.16-11 33-38 10.11-7 18-22 11.7-11 W+ 6) F. Hermelink


245

1.42-38 18-22* 2.26-21 17x26 3.28x8 9-13 4.8x19 20-24 5.19x30 25x43 6.38x49 26-31 7.32-27 31x22 8.33-28 22x33 9.49-43 W+ 7) O. Dijkstra 1.24-19 10-14 2.19x10 4x15 3.23-18 15-20 4.18-13 9x18 5.29-23 18x29 6.38-32 27x38 7.42x15 17-22 8.15-10 22-28 9.10-5 28-33 10.5-37! 31x42 11.47x29 W+

8) L. Springer 1.22-18 26-31 1...21-27 2.32x21 16x27 3.41-36 27-32 4.42-37 32x41 5.36x47 11-17 6.18-13 17-22 7.13-9 22-28 8.9-4 W+ 2.41-36 11-17 3.36x27 17-22 4.18-13 22x31 5.13-9 31-36 6.9-4 36-41 7.4-36 41-46 8.42-37 21-26 9.36-4 16-21 10.4-31 W+

9) O. Dijkstra 1.39-33 21-27 1...15-20 2.37-32 20-24 3.44-40 etc. W+ 2.33-29 23x34 3.30x39 19-23 4.39-33 14-19 5.35-30 27-32 6.37x28 23x32 7.33-28 32x23 8.44-39 23-28 9.39-33 28x39 10.30-24 19x30 11.25x43 15-20 12.43-39 20-24 13.39-34 W+ 10) O. Dijkstra 1.22-18 13x22 2.28x8 3x12 3.23-19 12-18 4.33-28 31-37 5.42x31 26x37 6.28-23 18-22 7.19-13 20-24 8.29x20 15x24 9.13-8 22-27 10.8-2 27-32 10...27-31 11.2x30 31-36 12.30-48 37-41 13.48-39 41-46 14.39-28 W+ 11.2x30 32-38 12.47-41!! 37x46 13.30-19 W+ 11) A. Kuyken 1.40-35 2-8 2.34-29 17-22 3.28x17 7-12 4.29x20 12x32 5.35x24 25x14 6.33-28 32x23 7.24-19 23-28 7...14-20 8.19x28 20-24 9.28-22 8-13 10.39-34 13-19 11.22-18 24-30 12.34x25 19-24 13.25-20 24x15 14.18-13 W+ 8.19x10 28-32 9.10-5 32-38 10.5-37 8-12 11.39-33 38x29 12.37-14 29-33 13.14-3 12-18 14.3-9 18-23 15.9-14 23-29 16.14-20 29-34 17.20x38 34-40 18.38-33 40-45 19.33-50 W+ 12) E. Mereno 1.28-22 9-13 1...26-31 2.22x4 31x42 3.27-21 16x27 4.4x48 W+ 1...16-21 2.22x4 21x41 3.4-10 W+ 2.22-17 13-19 3.37-32 19-23 4.29-24 26-31 5.27x36 16-21 6.17x26 18-22 7.36-31 22-28 8.24-19 23x14 9.32x23 14-20 10.23-19 20-25 11.19-14 25-30 12.14-10 30-34 13.10-5 34-39 14.5-28 39-43 15.26-21 W+

13) A. Kuyken

1.24-19 14-20 2.19x28 20-24 3.29x20 15x24 4.31-26 24-29 5.34x23 18x29 6.28-23 29x18 7.32-28 11-17 8.37-31 18-22 9.28-23 7-11 10.31-27 22x31 11.36x27 11-16 Now a position from Grégoire 1948 has emerged. 12.23-19 12-18 13.19-14 18-23 14.14-10 23-29 15.10-5 16-21 16.27x16 17-22 17.5-32 29-34 18.32-49 22-28 19.16-11 28-33 20.11-7 34-40 21.49x35 33-38 22.35-19 38-43 23.7-2 43-49 24.19-35 49-32 25.26-21 32x16 26.35-49 W+ 14) M. Raichenbach – Grandmougin 1.29-24 19x30 2.35x24 3-9 3.24-20 7-11 3...12-18 4.21-17 18-23 5.48-43 etc. W+ 4.48-42! In the game 4.20-15? 9-14 = was played. 4... 11-16 5.20-15 16x27 6.15-10 9-14 7.10x19 12-18 8.19-14 18-23 9.14-10 23-29 10.10-4 29-33 11.4x31 33-39 12.31-22 39-43 13.42-38 43x32 14.22-33 32-37 15.33-47 W+ 15) G. Boom – L. Lylklema 1.34-29! The game was 1.47-41? 36x47 2.44-40 47x29 3.34x14 18-22?? 3...24-29 4.14-9 18-23 5.28x19 29-33 = 4.28x17 24-29 5.17-11 6x17 6.14-9 29-33 7.9-3 17-22 8.3-9 22-28 9.9-14 W+ 1...24-30 2.44-39 30-35 3.28-23 19x28 4.33x13 35-40 5.13-9 40-45 6.9-4 6-11 7.47-41 36x47 8.4-15 47x24 9.15x6 W+ 16) Tj. Smedinga 1.34-29 23x34 2.39x30 25x34 3.24-20 15x24 4.43-38 32x43 5.48x19 18-23 6.19x28 12-18 7.47-41 18-22 8.28-23 22-27 9.23-19 27-32 10.19-14 17-22 11.14-9 22-28 12.33x22 32-38 13.41-37 The moves can be exchanged: 13.9-4 38-43 14.41-37 W+ 13...38-43 14.9-4 W+

Playing with the king 1) J. Noome 1.15-33 7-12 2.33-20 2.33-42 is also good. 2...12-17 3.20-3 17-22 4.3-9 22-28 5.9-20 28-32 6.20-15 W+ 2) Huegenin 1.34-39 11-16 2.39-43 19-24 2...19-23 3.43-38 23-28 4.38-27 (or 4.38-49) 4...28-33 5.27-43 W+ 3.43-38 24-30 4.38-43 30-35 5.43-49 W+ 3) 1.14-19! 8-12 2.19-23! 12-17 3.23-37! Other moves don’t win!


246

3... 17-21 4.36-31 21-27 5.31x22 15-20 6.22-18 20-24 7.18-12 24-29 8.12-7 29-33 9.7-1 33-39 9...33-38 10.37-28 W+ 10.37-28 W+ 4) 1.7-2 27-31 2.2x30 31x42 3.30-24 42-47 4.39-34 47x20 5.25x14 26-31 6.14-9 4x13 7.15-10 31-37 8.10-4 13-19 9.4-10 + 5) 1.2-7 18-22 2.7-34 22-28 2...16-21 3.34-39 22-27 4.39-43 25-30 5.43x25 27-32 6.25-20 21-27 6...21-26 7.20-24 32-37 8.24-19 37-42 9.19-37 42x31 10.36x27 W+ 7.20-42 W+ 3.34-39 28-32 4.39-43 32-37 5.43-48 25-30 6.48x26 30-34 7.26-48 34-40 8.48-39 40-45 9.39-50 W+ 6) 1.4-9 12-17 1...30-35 2.39-34 12-17 3.9-3 17-22 4.3-9 22-28 5.9-14 28-33 6.34-29 33x24 7.14-23 W+ 2.9-25 30-35 3.39-34 17-21 3...17-22 4.25-9 22-28 5.9-14 28-33 6.34-29 33x24 7.14-23 W+ 4.25-9 21-26 5.9-18 15-20 6.18-29 20-25 7.29-18 W+ 7) J. de Vries - J. Wilbrink 1.7-2 The game was 1.7-1? 17-22 = 1...19-24 2.2-16 2.2-8 17-22 3.8-21 24-29 4.21-38 29-34 5.38-43 22-28 6.43-49 W+ 2...24-29 3.16-38 29-34 4.38-49 34-39 5.44x33 30-34 6.33-29 34x23 7.49-40 23-28 8.40-49 28-33 9.49-43 17-22 10.43-16 W+ 8) K. Chaletski 1.25-48 16-21 1...18-23 2.48-43 16-21 3.32-28 33x22 4.43x16 23-29 5.16-7 29-33 6.7-16 W+ 1...18-22 2.32-28 33-39 3.48x34 22x33 4.34-43 W+ 2.32-28 33x22 3.48-26 21-27 4.26-37 27-31 5.37x26 22-28 6.26-3 W+ 9) Willems – Doerga 1.9-3 12-18 2.3-25 Or first 2.3-9 18-23 and then 3.9-25 etc. W+ 2...30-35 3.25-9 35x44 4.9x40 W+ 10) 1.10-5 33-39 2.5-28 39-43 3.28-32 38x27 4.49x38 W+ 11) J. van Leeuwen – C. Mulder 1.13-9 30-35 2.9-4 35-40 3.4-22 6-11 3...40-44 4.33-29 W+ 4.22x6 40-44 5.6-22 W+

12) 1.27-21! 1.8-2? 16-21! 2.27x16 33-39 = 1...16x27 2.8-2 33-39 2...27-32 3.2-11 33-38 4.11-16 ; 2...27-31 3.2-30 33-38 4.30-48 31-36 5.41-37 W+ 3.2-16 27-31 4.16-49 W+

Endgame positions 1) 1.24-19 22-27 2.19-13 21-26 3.13-8 27-31 4.8-2 31x33 5.2-24 W+ 2) 1.41-36 17-21 2.37-31 21-27 3.23-19 27-32 4.31-27 32x21 5.19-13 22-28 6.13-8 28-33 7.8-2 33-39 8.2-16 21-26 9.16-49 W+ 3) 1.37-31! 19-23 2.31-27 23-29 3.27-22 28x17 4.20-14 17-22 5.14-9 22-28 6.9-3 28-32 7.3-26 32-38 8.26-48 38-43 9.39-34 29x40 10.48x45 W+

4) 1...20-24 2.43-38 23-29 3.33-28 24-30 4.38-32 30-34 5.28-22 34-40 6.22-18 1x37 7.6-1 37-23! 8.1-6 23-1 9.6-22 40-44 10.22x50 1-6 B+ 5) 1.20-14! 28-33 2.14-9! 4x13 3.12-7 etc. W+ 6) 1.25-20 2-8 2.37-31! 2.37-32 10-15 3.20-14 16-21 4.17x26 8-13 5.26-21 13-19 6.14x23 15-20 is no more than a draw! 2...10-15 3.20-14 16-21 4.17x26 8-13 5.26-21 15-20 6.14x25 13-19 7.25-20 19-23 8.20-14 23-29 9.14-10 29-34 10.10-5 White can lay the same kind of ambush by going to <3 or 4>. 34-39 11.5-28 39-43 12.28-6 and black is ambushed. 7) H. Stroetinga – J. Smits 1.20-14 6-11 1...41-46 2.14-9 46-41 3.9-4 is an easy win. 2.3-26! 41-46 2...11-16 3.26-37 41x43 4.49x38 16-21 5.14-10 21-27 6.10-5 +. 3.26-37 46x43 4.49x38 W+ 8) R. Heusdens – R. Clerc 1...23-28! 1...36-41? 2.29x18 41-47 3.18-12 7x18 4.26-21 47-33 5.34-30! and black can't win! 2.34-30 2.29-23 19-24 3.23x32 36-41 4.32-27 41-46 5.27-22 46-23 6.26-21 7-11 B+ 2...28-33 3.29x38 36-41 4.26-21 41-47 5.38-32 47-29 Also good is 5...19-24 6.30x19 47-41 7.32-27 41x14 8.27-22 14-9 9.22-17 9-3 B+ 6.40-35 29-23 7.32-27 23-18 B+


247

9) M. Rentmeester – M. v.d. Klis 1.24-20! White shouldn’t go to king immediately: 1.7-1 49-35 2.24-20 35-30 = 1.7-2 49-38 2.24-19 38-32 3.19-13 32-28 = 1...49-38 2.20-15 38-33 3.7-2 33-6 4.2-35 W+ 10) O. Budis – Y. Anikeev 1...41-47! 1...41-14? 2.30-25 like in the game is no more than a draw. 2.38-32 47-29 3.30-25 3.32-28 29-12 B+ 3.32-27 29-20 4.30-25 20-29 5.27-21 16x18 6.17-11 8-12 7.11-6 18-23 B+ 3...29-23 4.32-27 4.25-20 23x41 5.22-18 16-21 6.17x26 41-36 7.20-15 36x4 8.26-21 8-12 B+ 4...23-29 5.25-20 29x15 6.22-18 15-29 7.17-12 8x17 8.18-13 29-18 9.13x11 16x7 B+ 11) 1.24-19! 18-23 2.28-22 23x14 3.22-18! 14-19 4.18-12 19-23 5.12-8 23-28 6.8-2 9-14 7.2-16 14-19 8.16-27 Or another waiting move like 8.16-49. 8...15-20 9.27-38 20-25 9...19-24 10.38-47 28-32 11.47-41 32-38 12.41-47 W+ 10.38-15 25-30 11.39-33!! 28x39 12.15-10 19-24 13.10-15 W+ 12) E. Prosman – J. Pawlicki 1.2-11! The game was 1.2-16? 38-42 2.41-37 42x31 3.16-32 14-20? (3...15-20! 4.24x15 31-36 5.32x5 9-14 6.5x17 36-41=) 4.25x3 22-27 5.32x16 31-37 6.3-26 W+ 1...22-27 2.11-16 27-32 3.41-36 32-37 4.16x43 15-20 4...37-42 5.43-48 42-47 6.48-37 47x20 7.37x10 15x4 8.25x3 W+ 5.24x15 37-42 6.43-48 42-47 7.48-30 W+ 13) L. Schut 1.11-6 12-18 1...13-19 2.34-29 24x33 3.6-1 12-17 4.1-6 17-21 5.6x39 21x32 6.39-43 32-37 7.43-48 25-30 8.48x26 30-34 9.26-17 etc. W+ 2.34-29 24x33 3.6-1 18-22 4.27x9 33-38 5.1-34 38-42 5...25-30 6.34x25 38-42 7.25-48 42-47 8.9-4 47-29 9.48-42 29x47 10.4-15 W+ 6.34-29 42-48 6...42-47 7.29-15 25-30 8.9-4 30-34 9.4-13 + 7.9-3! and it is over, since 36-31 29-12 is threatening, while the king can’t fly to <43, 39 or 30> because of 29-20 W+

14) L. Springer 1.27-22! 28-32 2.6-1 29-34 3.1x37 34x45 4.17-11 45-50 4...9-14 5.37x10 45-50 6.10-28 50-45 7.28-50 45-29 8.11-7 29x1 9.50-45 W+ 5.11-6 50x17 6.37-26 17-3 7.6-1 W+ 15) K.W. Kruijswijk 1.18-12 19-23 1...20-24 2.12-8 24-30 3.44-39 35x33 4.8-2 30x39 5.2x43 W+ 1...19-24 2.12-7 24-30 3.44-39 35x33 4.34-29 33x24 5.7-1 W+ 2.12-8 20-24 3.8-3 23-28 4.44-39! 35x33 5.34-29 25-30 6.29x38 24-29 7.3-20 29-33 8.38x29 28-32 9.29-24 30x19 10.20-42 19-23 11.42-15 23-28 12.15-42 W+ 16) 1.2-19 23-29 2.19x10 29-33 3.50-44 33-38 3...26-31 4.10-4 31-37 5.4-15 33-39 6.44x33 37-42 7.15-29 W+ 4.44-39 38-42 5.10-15 W+ 17) 1.29-24 19x30 2.35x24 12-18 3.33-29 10- 14 4.42-38 14-20 5.24-19 20-25 6.29-24 15-20 7.24x15 25-30 8.15-10 18-23 9.19x28 30-34 10.10-4 Black can also be ambushed by playing 10.10-5 34-39 11.28-23 39-44 12.23-19 W+ 10...34-40 11.28-23 40-44 12.23-18 W+ 18) D. Mulder – J. Smits 1.36-31! 8-12 2.31-27 12-18 3.24-20 14-19 4.20-15 19-24 5.15-10 24-29 6.27-21! 29-33 7.10-4 18-23 8.4-10 23-29 9.10-15 29-34 10.15x38 W+

S7. Compositions

248

Painting by Henk de Witt

Draughts can be approached in different way. The game played competitively is considered to be a mind sport. One can also study the game, analysing games or endgames, the scientific approach. Composing positions (so-called problems) is the artistic approach of draughts. Compositions can show the opulent beauty of the game of draughts. Some people have a good time solving compositions. Merely showing the solution of composed positions can also be a nice experience. In this concluding section of the Course, I show 72 compositions. Positions are selected that resemble a game situation. Compositions with unreal positions (but often with very complicated and nice shots) are excluded. Some compositions are straight-away shots, sometimes the shot needs to be forced. These positions are marked with an F. The best compositions have a sharp ending. I hope you enjoy these compositions and don’t be reluctant to show your favourites to others!

A Dutch magazine about draughts compositions is De Problemist. The magazine also has on online version: http://www.dekvd.net/ Online movies about draughts compositions (and much more) are shown on my YouTube channel: http://www.youtube.com/user/Akashian123

http://www.dekvd.net/

http://www.youtube.com/user/Akashian123

S7. Compositions

249

1

2

3 F

4 F

F. Hermelink 1) 1.40-34 29x40 2.49-43 40x49 3.38-33 ad lib. 4.27-21 ad lib. 5.39-34 23x41 6.34x1 26x37 7.1x4 35x24 8.4x15 W+

2) 1.27-21 29x49 2.32-27 23x32 3.47-41 36x47 4.16-11 47x50 5.11x2 49x38 6.2-8 13x2 7.22x4 50x11 8.45-40 35x44 9.21-16 32x21 10.16x7 2x11 11.26x17 11x22 12.4x2 W+ 3) 1.38-33 28x37 2.46-41 37x46 3.43-38 9-13 4.38-32 46x28 5.33x22 18x27 6.29x20 15x24 7.36-31 27x36 8.47-41 36x47 9.39-33 47x29 10.34x5 W+ 4) 1.36-31 14-19 1...6-11 2.22-17 12x32 3.37x19 26x46 4.38-33 14x23 5.33-28 23x32 6.43-38 32x43 7.29-23 46x30 8.35x24 20x29 9.34x5 43x34 10.40x29 W+ 2.22-17 12x32 3.37x28 26x46 4.38-32 19x30 5.28x19 13x44 6.40x49 46x40 7.35x24 20x29 8.45x5 W+

Frans Hermelink

S7. Compositions

250

5 F

6 F

7 F

8 F

5) 1.33-28 24-30 1...23-29 2.34x23 18x29 3.39-34 8-13 4.34x23 13-18 5.28-22 18x29 6.32-28 29-33 7.28x39 7-11 8.40-35 12-17 9.25-20 17x28 10.20x29 9-13 11.44-40 13-18 12.39-33 28x39 13.29-23 18x29 14.40-34 29x40 15.35x33 W+ 2.28x19 18-22 3.27x18 12x14 4.40-35 26-31 5.35x24 31-37 6.32-28 37x46 7.34-30 46x23 8.44-40 23x45 9.24-19 14x23 10.39-34 45x29 11.30-24 29x20 12.25x1 23-28 13.1-29 28-32 14.29-42 W+ 6) 1.36-31 21-26 2.27-21 16x49 3.40-34 23x41 4.34x3 26x37 5.30x8 2x13 6.22-17 11x22 6...49x40 7.45x34 11x22 8.48-42 37x48 9.3-25 48x30 10.25x46 W+ 7.48-42 37x48 8.3-25 49x40 9.45x34 48x30 10.25x46 35-40 11.46-28 40-45 12.28-50 W+ 7) 1.48-42 31x22 2.36-31 15-20 2...8-13 3.33-29 23x45 4.31-26 22x33 5.38x9 W+ 3.31-27 22x31 4.35-30 24x35 5.44-39 35x44 6.42-37 31x42 7.28-22 17x37 8.38-32 37x28 9.33x15 44x33 10.47x16 W+

8) 1.28-22 17x28 2.48-42 24-29 2...35-40 3.44x35 24-29 4.38-33 29x36 5.34-29 23x34 6.32x3 W+ 2...24-30 3.34x25 1-7 4.44-40 35x44 5.43-39 44x33 6.38x18 13x31 7.32x3 31-36 8.3-20 36x38 9.20x47 W+ 3.27-21 29x49 4.45-40 35x44 5.43-39 44x33 6.38x16 49x27 7.21x12 W+

S7. Compositions

251

9

10 F

11 F

12

9) 1.35-30 24x35 2.27-21 16x49 3.39-33 23x41 4.33x4 26x37 5.34-30 35x24 6.22-18 13x22 7.4x20x9x22x41x24 14x25 8.48-42 37x48 9.40-35 49x40 10.45x34 48x30 11.35x2 W+ 10) 1.47-41 18-22 2.32-27 22x31 3.33-28 23x32 4.34-29 24x33 5.41-36 35x24 6.36x20 19-24 7.20x29 13-18 8.29-23 18x29 9.44-39 W+

11) 1.28-22 21-27 1...21-26 2.30-25 26x17 3.25x5 W+ 2.32x21 16x47 3.22-17 11x22 4.44-40 35x33 5.38x9 47x49 6.9-4 24x35 7.4x44 49x40 8.45x34 W+ 12) 1.29-23 28x19 2.33-29 16x27 3.29-24 20x29 4.47-41 36x47 5.37-32 47x33 6.39x8 27x49 7.40-34 49x24 8.34x1 3x12 9.1x3 19-23 10.3-12 23-28 11.12-29 28-32 12.29-42 W+

S7. Compositions

252

13

14 F

15 F

16 F

13) 1.34-29 23x34 2.28-23 19x50 2...19x26 3.44-39 21x32 4.39x6 W+ 3.43-39 50x26 4.45-40 21x43 5.48x6 26x48 6.40-34 48x30 7.35x22 W+ 14) 1.36-31!! 21-27 1...3-8 2.31-27 22x31 3.44-39 35x44 4.28-23 19x28 5.33x2 44x24 6.26x17 12x21 7.37x17 W+ 1...7-11 2.31-27 22x31 3.29-24 19x30 4.40-34 30x39 5.48-43 39x48 6.28-22 17x39 7.26x19 14x23 8.37x26 48x28 9.44x15 W+ 1...19-24 2.29x20 14x25 3.31-27 22x31 4.28-22 17x39 5.26x19 31-36 6.44x33 35x447.50x39 W+ 2.32x21 16x36 3.29-24 19x30 4.40-34 30x39 5.26-21 17x26 6.28x19 14x23 7.38-32 39x28 8.37-31 36x38 9.42x15 W+ 15) 1.25-20 15x24 2.29x20 3-9 2...6-11 3.33-28 22x33 4.39x28 3-9 5.48-43 5-10 6.20-15 10-14 7.43-39 8-12 8.34-30 23-29 9.39-33 29x38 10.32x43 18-23 11.27-22 23x32 12.46-41 17x28 13.30-24 19x30 14.31-27 32x21 15.26x10 W+ 3.48-43 5-10 4.20-15 9-14 5.34-30 6-11 6.33-28 22x33 7.39x28 23-29 8.27-21 16x49 9.26-21 17x37 10.46-41 37x46 11.40-34 49x24 12.34x3 46x23 13.3x9 4x13 14.15x4 11-16 15.4x27 19-24 16.27-38 24-30 17.38-43 30-35 18.43-49 16-21 19.49x16 35-40 20.16-11 40-45 21.11-50 W+ 16) 1.45-40 30-35 2.48-43 13-19 3.42-37 17-22 4.29-24 19x30 5.37-31 26x37 6.33-28 22x42 7.43-38 42x33 8.39x10 30x50 9.25x1 35x44 10.1x41 50-45 11.49x40 45x5 12.41-46 W+

S7. Compositions

253

17

18

19

20

These four compositions share the same theme: piercing the black position twice. 17) A. Puertolas 1.35-30 24x35 2.25-20 28x37 3.47-42 37x48 4.21-17 48x14 5.17x28 14x40 6.45x1 W+

18) L.J. Koops 1.42-38 22x33 2.25-20 28x46 3.35-30 24x44 4.50x19 46x39 5.43x5 4-10 6.5x8 2x13 7.48-43 W+

19) F. Hermelink 1.31-27 22x33 2.16-11 28x46 3.47-41 46x6 4.35-30 24x44 5.50x17 6x30 6.25x1 W+

20) F. v.d. Ploeg 1.43-39 40x49 2.35-30 49x47 3.30x28 47x26 4.39-34 26x30 5.25x1 2-7 6.1x10 5x14 7.50-44 W+

S7. Compositions

254

21

22

23 F

24

D. Vuurboom

21) 1.15-10 4x15 2.29-23 18x40 3.27x18 13x22 4.24x4 15x24 5.35x44 24x35 6.4x27 16-21 7.27x7 2x11 8.37-32 17-22 9.31-26 11-17 10.32-27 22x31 11.36x27 6-11 12.27-21 17-22 13.21-17 22-28 14.17x6 28-33 15.6-1 33-38 16.1-23 35-40 17.44x35 38-43 18.23-28 W+ 22) 1.37-31 29x49 2.30-24 49x21 3.26x8 18x36 4.8-2 19x30 5.2x41 36x47 6.35x24 47x20 7.25x3 W+ 23) 1.25-20 26x28 2.20x27 28-32 3.27-21 32x34 4.21x3 29x38 5.40x20 15x24 6.3-26 38-43 7.26-48 43-49 8.48-30 24x35 9.50-44 49x40 10.45x34 W+ 24) 1.28-23 35x33 2.38x29 24x33 3.42-38 18x29 4.27-22 17x28 5.26-21 16x27 6.31x22 33x31 7.22x4 12-17 8.4x11 6x17 9.36x27 W+ (coup Napoleon)

Derk Vuurboom

S7. Compositions

255

25

26

27 F

28 F

25) 1.47-41 36x47 2.37-31 47x29x40x49 2...47x24x35x49 3.31-26 27x38 4.26x19 13x24 5.34-30 24x35 etc. W+ 3.31-26 27x38 4.26x19 13x35 5.39-33 38x29 6.50-44 49x40 7.45x5 35-40 8.5-28 40-45 9.28-50 W+ 26) 1.27-21 16x36 1...23x43 2.33-29 16x36 3.47-42 36x47 W+ 2.47-42 23x43 3.33-29 36x47 4.32-27 43x21 5.26x10 47x24 6.25x3 5x14 7.3x16 6-11 8.16x7 2x11 9.49-43 11-17 10.43-38 17-22 11.38-32 W+ 27) 1.33-29 12-18 2.38-33 20-25 3.32-28 23x32 4.29-23 18x38 5.39-33 38x29 6.34x12 25x45 7.44-40 17x8 8.50-44 45x34 9.44-39 34x43 10.49x9 8-13 11.9x18 2-8 12.46-41 26-31 13.36x27 21x32 14.48-42 16-21 15.41-36 32-37 16.42x31 21-26 17.31-27 26-31 18.18-12 8x17 19.27-21 17x26 20.36x27 W+ 28) 1.45-40 18-23 1 ...19-23 2.34-30 25x45 3.44-40 45x34 4.33-28 23x43 5.48x8 W+ 2.37-31 27x36 3.47-42 36x47 4.33-29 24x33 5.38x9 47x50 6.49-44 50x30 7.35x15 4x13 8.15x4 25-30 9.4x2 30-35 10.2x30 35x44 11.30-39 44x33 12.48-43 W+

S7. Compositions

256

29

30 F

31

32 F

J. van den Boogaard 29) 1.21-17 12x21 2.39-34 30x50 3.28-23 50x46 4.23x1 35x44 5.29-24 20x29 6.1x5 W+

30) 1.16-11 17-22 2.49-43 6x17 3.42-38 22-27 4.39-33 28x39 5.46-41 37x46 6.26x19 46x14 7.25-20 14x25 8.24-20 25x14 9.47-41 14x46 10.38-32 46x38 11.34x5 4-10 12.5x8 2x13 13.48-43 W+

31) 1.37-32 28x37 2.48-43 37x48 3.39-33 48x28 4.47-41 26x37 5.41x12 17x8 6.36-31 27x36 7.46-41 36x47 8.30-24 47x33 9.24x2 33x15 10.2x20 15x40 11.45x34 W+ 32) 1.35-30 11-17 2.30-24 20x29 3.25-20 14x25 4.27-22 18x38 5.36-31 23x32 6.37x28 26x46 7.48-43 38x40 8.45x5 46x23 9.5x2 W+

S7. Compositions

257

33 F

34

35 F

36 F

33) A. Renooij 1.39-33 23-28* 2.36-31 28x50 3.37-32 50x6 4.27-22 6x27 5.40-34 27x30 6.25x3 16x27 7.3x4 W+ 34) D. van den Berg 1.27-21 36x27 2.34-29 24x31 3.47-41 25x43 4.28-22 27x38 5.22x4 16x27 6.41-37 31x42 7.4x29 38-43 8.29-40 35x44 9.50x48 W+ 35) D. van den Berg 1.49-44! 18-22 1...7-11 2.16x7 12x1 3.37-31 26x37 4.33-28 23x43 5.34x12 43x34 6.40x18 W+ 1...14-20 2.37-32 20-25 3.32-28 23x43 4.34x14 43x34 5.40x20 15x24 6.14-10 W+ 2.34-30 24x35 3.33x24 19x30 4.37-31 26x37 5.47-42 37x48 6.38-33 48x34 7.40x20 15x24 8.33-29 24x33 9.44-40 35x44 10.50x8 7-12 11.8x17 30-34 12.45-40 34x45 13.16-11 45-50 14.11-6 50x11 15.6x17 W+ 36) J.J. van Tol 1.31-27 7-11 1...8-12 2.37-31 7-11 3.26-21 17x39 4.44x24 19x30 5.28x6 W+ 2.26-21 17x26 3.27-22 18x27 4.32x21 23x41 5.21-17 11x22 6.42-37 41x32 7.38x20 25x14 8.36-31 26x37 9.47-42 37x39 10.44x2 3-8 11.2x10 5x14 12.50-44 W+

S7. Compositions

258

37

38

39 F

40 F

37) J.H. Scheijen 1.22-18 13x11 2.33-29 24x33 3.39x28 30x50 4.27-22 23x32 5.31-27 50x17 6.21x3 32x21 7.26x17 11x22 8.25-20 14x25 9.3x2 W+

38) B. Kloos 1.37-31 26x48 2.27-22 17x46 3.49-43 16x27 4.33-28 23x32 5.47-41 46x37 6.39-34 48x30 7.25x3 32x43 8.3x5 W+

39) O. Dijkstra 1.22-18 23-29 2.18-13 9x18 3.47-41 36x47 4.46-41 47x36 5.21-17 12x21 6.16x27 36x22 7.39-34 22x30 8.25x1 2-7 9.1x9 3x14 10.38-33 14-19 11.33-29 W+

40) O. Dijkstra 1.31-26 8-13 1...8-12 2.38-32 19-23 3.40-34 23-29 4.34x23 28x19 5.32-28 12-17 6.39-34 W+ 1...6-11 2.37-31 8-12 3.31-27 22x31 4.26x37 12-17 5.33x22 17x28 6.38-33 W+ 2.33-29 24x31 3.36x9 3x14 4.39-33 28x39 5.40-34 39x30 6.35x13 14-20 7.13-9 20-24 8.9-4 6-11 9.4-18 11-17 10.18-1 17-22 11.26-21 16x27 12.1-6 W+

S7. Compositions

259

41

42 F

43 F

44

41) J. Hauschild 1.27-21 16x49 2.34-30 23x32 3.47-41 36x47 4.30-25 47x45 5.25x3 49x40 6.3x1 40-49 7.39-34 45x23 8.1x40 49-32 9.48-43 32x49 10.40-44 49x40 11.35x44 W+ 42) M. Sabater 1.28-22 27-31 2.34-30 18x27 3.29-24 20x29 4.30-24 29x20 5.38-33 27x40 6.42-38 31x42 7.39-34 40x29 8.33x4 42x33 9.4x2 33-38 10.2x42 26-31 11.42x8 3x12 12.47-42 W+

43) D. van den Berg 1.37-31 23x34 2.39x30 25x34 3.33-28 22x33 4.38x40 18-22 5.42-38 12-18 6.32-27 21x32 7.38x27 3-8 8.27-21 8-12 9.31-27 22x31 10.26x37 17x26 11.37-31 26x37 12.48-42 37x39 13.40-34 39x30 14.35x22 W+ 44) A. Solnikow 1.24-19 13x33 2.34-30 25x43 3.44-40 22x31 4.50-44 45x34 5.44-39 33x44 6.26-21 16x38 7.42x13 31x42 8.47x16 W+

S7. Compositions

260

45

46

47

48

45) J. Viergever 1.47-41 36x47 2.46-41 47x36 3.31-26 36x22 4.45-40 16x27 5.40-34 29x40 6.49-43 40x49 7.39-34 22x31 8.34x3 49x32 9.26x30 35x24 10.3x22 W+

46) L. de Rooij 1.50-44 40x49 2.39-34 49x18 3.34-30 23x32 4.30-24 19x30 5.25x1 32-37 6.41x32 2-7 7.1x9 4x13 8.32-28 13-19 9.28-23 19x28 10.42-38 W+

47) L. de Rooij 1.38-33 28x19 2.29-23 36x38 3.23x3 15x24 4.3x4 26-31 5.4x36 38-43 6.36-47 43-48 7.47-42 W+

48) L. de Rooij 1.44-40 16x36 2.47-42 36x38 3.43x14 45x43 4.49x20 13-19 5.14x23 25x14 6.23-18 14-19 7.18-12 19-23 8.12-7 23-28 9.7-1 28-32 10.1-23 32-38 11.23-29 38-43 12.29-40 35x44 13.50x48 W+

Leen de Rooij

S7. Compositions

261

49

50

51

52

P. Meurs 49) 1.35-30 26x46 2.42-37 24x35 3.27-22 18x27 4.32x21 46x29 5.33x4 23x32 6.4x38 16x27 7.38x14 35-40 8.14-28 40-45 9.28-50 8-12 10.48-43 W+ 50) 1.32-28 21x34 2.31-27 29x38 3.27-22 18x27 4.37-31 26x37 5.47-41 37x46 6.48-43 46x23 7.43x14 19x10 8.44-40 35x44 9.49x9 4x13 10.15x4 16-21 11.4x16 6-11 12.16x7 2x11 13.25-20 24x15 14.36-31 W+ 51) 1.30-24 19x30 1...20x29 2.32-27 13-18 3.27-21 16x36 4.37-31 36x27 5.38-33 29x38 6.43x1 W+ 2.39-33 30x48 3.47-41 28x39 4.50-44 39x50 5.49-44 50x27 6.32x1 48x31 7.1x36 8-13 8.36x20 25x14 9.40-34 W+ 52) 1.37-31 27x36 2.47-41 36x47 3.34-29 23x32 4.42-37 47x20 5.37x10 15x4 6.25x3 18-23 7.3-20 23-28 8.26-21 28-32 9.20-42 1-7 10.21-17 4-9 11.42-15 9-14 12.15-42 14-19 13.42-15 19-23 14.17-12 7x18 15.15-4 W+

GMI Pim Meurs

S7. Compositions

262

53

54

55

56

53) R. van der Pal 1.29-24 20x29 2.27-21 16x49 3.39-33 49x24 4.33-28 23x41 5.34x3 26x37 6.3x47 19-24 7.47x20 15x24 8.48-43 24-29 9.43-39 W+

54) R. van der Pal 1.26-21 17x26 2.34-30 23x32 3.30-25 28x39 4.37x19 26x37 5.41x21 16x27 6.36-31 27x36 7.46-41 36x47 8.19-13 47x20 9.25x3 18x9 10.3x43 11-17 11.43-39 17-21 12.39-43 21-26 13.43-48 15-20 14.48-42 20-25 15.42-48 W+ 55) A. Kuyken 1.29-24 20x29 2.27-21 18x49 3.21x1 49x24 4.39-33 23x41 5.34x23 19x39 6.1-6 26x37 7.6x36 W+

56) A. Kuyken 1.29-23 18x49 2.16-11 28x48 3.11x24 49x32 4.37x8 48x26 5.41-37 26x20 6.25x3 27-32 7.3-14 32-38 8.8-2 36-41 9.47x36 15-20 10.14x25 38-42 11.2-24 42-48 12.24-29 48-37 13.36-31 37x26 14.25-48 W+

MN Rein van der Pal

S7. Compositions

263

57

58

59

60

A. Timmer 57) 1.29-24 18x47 2.31-26 47x20 3.26x19 14x23 4.25x5 23-28 5.5x21 16x27 6.40-34 22-28 7.34-29 15-20 8.35-30 27-32 9.30-24 32x41 10.36x47 28-32 11.24x15 32-38 12.47-42 38x47 13.29-24 47x20 14.15x24 W+ 58) 1.31-26 11-16 1...11-17 2.28-22 18x27 3.33-29 24x31 4.26x37 27x40 5.45x3 W+ 2.26x17 12x21 3.33-29 24x31 4.28-23 18x29 5.39-33 29x40 6.45x1 31-36 7.1-23 21-26 8.32-27 26-31 9.27-22 16-21 10.23-1 21-27 11.1-7 27x18 12.7x23 W+ 59) 1.40-34 24x35 2.34-29 23x34 3.39x30 35x24 4.47-41 36x47 5.28-22 47x29 6.27-21 16x40 7.45x3 18x27 8.3x6 W+ 60) 1.35-30 25x34 2.29x40 18x29 3.27x18 12x43 4.33x24 19x30 5.21x12 7x18 6.16x7 1x12 7.42-38 43x32 8.31-27 32x21 9.26x10 9-14 10.10x19 18-22 11.19-14 22-28 12.14-10 28-32 13.10-5 32-38 14.5-37 38-43 15.37-48 43-49 16.48x25 49-16 17.25-43 16x49 18.40-35 49x40 19.35x44 W+

Arjen Timmer

S7. Compositions

264

61

62

63

64

61) E. Repetto 1.37-32 9-14 2.47-42 36x47 3.33-28 22x33 4.38x20 47x35 5.24x2 35x46 6.2-24 W+

62) V. Bulat 1.28-23 19x28 2.42-38 15x24 3.47-41 36x47 4.26-21 47x45 5.21x23 18x29 6.44-40 45x34 7.39x6 29-33 8.35-30 9-13 9.30-24 13-18 10.6-1 33-39 11.1x34 39x19 12.43-39 W+ 63) A. Domchev 1.37-31 26x48 2.25-20 48x14 3.44-40 35x44 4.28-22 14x46 5.16-11 21x43 6.11x2 18x27 7.2x5 W+ 64) M. Douwes 1.32-28 23x32 2.38x27 22x42 3.41-37 42x31 4.36x27 21x32 5.29-23 18x38 6.39-33 38x29 7.34x21 25x45 8.21-17 11x22 9.44-40 45x34 10.43-39 34x43 11.49x9 4x13 12.15x4 16-21 13.4x16 6-11 14.16x7 2x11 15.26-21 W+

S7. Compositions

265

65

66

67 F

68 F

A. Scholma

65) 1.34-29 23x43 2.22-18 12x23 3.44-40 35x44 4.25-20 14x34 5.33-29 24x22 6.27x38 36x27 7.32x23 W+

66) 1.32-28 23x43 2.37-31 26x46 3.33-28 46x33 4.48x10 5x14 5.45-40 21x32 6.29-24 20x29 7.34x1 W+

67) 1.31-27 21-26 1...11-16 2.22x11 6x17 3.34-29 23x34 4.28-22 17x28 5.32x5 21x41 W+ 2.27-21 7-12 3.44-40 35x44 4.33-29 44x24 5.25-20 30x48 6.20x16 48x18 7.21x5 W+ 68) 1.34-30 20-25 1...7-11 2.16x7 12x1 3.39-34 20-25 4.28-22 W+ 2.37-31 25x43 3.33-29 24x22 4.16-11 26x28 5.11x2 22x31 6.2x25 23-29 7.25-43 29-33 8.50-44 15-20 9.35-30 18-22 9...28-32 10.43x25 33-38 11.25-20 38-43 12.44-40 W+ 10.44-40 20-24 11.30x19 28-32 12.43x13 33-38 13.13-2 38-43 14.19-13 43-49 15.2-8 49x35 16.8-2 35x8 17.2x13 W+

GMI Auke Scholma

S7. Compositions

266

69

70

71

72

69) T. Smedinga 1.33-28 27x38 2.37-32 38x27 3.36-31 27x36 4.29-24 23x32 5.24x22 17x28 6.39-33 28x39 7.34x43 25x34 8.43-39 34x43 9.49x18 14-19 10.35-30 19-23 11.18x29 8-12 12.29-23 12-17 13.23-18 17-21 14.18-13 21-27 15.13-9 27-32 16.9-4 32-38 17.4-15 38-43 18.46-41 36x47 19.30-24 47x20 20.15x49 W+

70) T. Smedinga 1.42-37 13x24 2.29x9 3x14 3.37-31 27x36 4.23-18 12x32 5.47-41 36x47 6.26-21 47x40 7.21x3 25x34 8.3x1 40-34 9.1x40 45x34 10.49-44 34-40 11.44-39 40-44 12.39-33 44-49 13.50-44 49x40 14.35x44 10-14 15.33-29 14-19 16.44-40 5-10 17.40-35 10-14 18.29-24 19x30 19.35x24 W+ 71) E. Zubov 1.47-41 36x47 2.27-21 47x49 3.21x3 49x36 4.3-14 23x41 5.14x1 36x18 6.1x15 35x24 7.15x9 4x13 8.16x7 13-18 9.7-2 18-22 10.2-19 10-15 11.19-13 22-28 12.13-24 28-32 13.24-42 W+ 72) T. Goedemoed – ‘The scrum’ 1.35-30 24x35 2.44-40 35x44 3.29-24 19x46 4.28x8 46x39 5.8-3 21x32 6.3x49 16-21 7.49x16 6-11 8.16x7 2x11 9.36-31 W+

Documents

Scrum T. Goedemoed 2012 - FMJDScrum – T. Goedemoed 2012 White plays and wins ! The Monkey shot (drawn by Sylvia Edelenbos) This is the seventh and conclusive part of A Course in