No commercial distribution without permission. Contact ...moyogo.com/PDF/R10.pdf'C *' is joseki to destroy Black territory. 'D' is a special strategy if the center is most important

No commercial distribution without permission. Contact [email protected] available at: http://waterfire.us/joseki.htm.

Copyright 2006-2007 by Andre Ay.Copyright 1998-2005 by Gary Odom.Portions copyright 2000-2001 by Stefan Verstraeten.R10 Produced with Moyo Go Studio: www.moyogo.com

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Reductions against a stoneon the third line on the side:. shoulder hit on 'A *'- shoulder hit against aniken-biraki on 'A *'- boshi on 'C *'- keima on 'D *'- oogeima on 'E *'- ear move against anikken tobi on 'F'- attatchment at otherstones on 'G *' before adirect approach- tsuke on 'H *'

The choice of the reductionmove depends on the typeof Black moyo and thestrategic plan of White.

'A *' is joseki, 'B' is too low.

'A *' or sabaki 'B *'.

'A *' is usual, 'B' and 'C'are also possible, 'B' givesboth sides more strength.

'A *', 'B' or 'C'.

* GOOD VARIATION *

Later, Black 'A' or 'C' orWhite 'B'.

Black aims at A.

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'A' is correct, 'B' is notrecommended.

'A' is correct. 'B' is bad. 'C'makes more influence andis good if White 2 was astrategic mistake. 'D' isquestionable. 'E' weakensthe top side. 'F' is notrecommended.

White attacks both sides.

Later, White can play A.

'A' or 'B'.

White aims at A.

Aji for White.

Ater 'A' or 'B', White has aweak position.

'A' settles the position, 'B'starts a fight.

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'A' or 'B'.

'A *' is correct, 'B' ispossible. 'C' is too heavy.'D' is not recommended.

'A *', 'B', 'C' or 'D' are ok.

* GOOD VARIATION *

Later Black 'A' to connector 'B' for territory or 'C' forinfluence orWhite 'A' or White 'C' orWhite invades the top side.

'A' or 'B'.

A Black push at A is slowand may not be answered

immediately.

Tenuki is better thancontinuing.

Tenuki is better thancontinuing.

'A' is correct, 'B' is bad.

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'A' is submissive, 'B' hurtsthe top side.

Nothing but aji for White.

'A' or 'B'.

'A' connects, 'B' gives a bitterritory for more valuableinfluence, 'C' hurts the topside.

'A' is correct, 'B' and 'C' aretoo slow.

Black aims at A.

Black aims at A.

'A' or 'B' are possible. 'C'hurts the top side.

Black can connect on A.

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'A' to weaken the top side,'B' to fight.

'A *' and 'B *' are joseki.'A' leaves continuations toattack White, 'B' takesmore territory.'C' builds thickness in thecenter. 'D' attacks theWhite group and pushes itinto the Black moyo.

The shoulder hit is bad, ifthe triangled stone is onthe squared positioninstead.

'A *' or 'B' are ok.

'A *' is correct, 'B' and 'C'lead to overconcentration.

'A *' or 'B'.

* GOOD VARIATION *

Immediately or later, Blackattacks the White group on'A' or 'B'. 'C' is toodefensive, as Black isalready settled.

Black can attack on 'A' or'B'.

Black doesn't want to give

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White time for an invasionon the top side.

Overconcentration marked.

'A', 'B' or 'C'.

'A' is usual, 'B' leads to abig fight, 'C' is an attack, ifBlack is stronger.

White 2 was already bad.

'A *' is correct, 'B' makesWhite heavy.

'A *' and 'B' are ok, 'C' isnot recommended.

'A *' is correct, 'B' is tooeasy for Black.

Black would also play thisvariation, if the triangledstone was on the squaredposition instead, showingand using the mistake ofWhite 2.

'A *' is correct, 'B'unnecessarily helps White.

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* GOOD VARIATION *

Continuation for White.


Depends on the ladder

'A' is better than 'B'.

White later plays A.

Black overconcentrated.

'A' or 'B' punish White.

'A *', 'B *' and 'C *' arejoseki.If 'A *', choose the side,which gives more territoryand follow-ups into thecenter and where youropponent would like toplay. After 'B *' Whitedevelops strength in thecenter. 'C *' makesterritory and leaves Blackthe choice of direction butno aji or tricks. 'C *' is lesspreferable than 'A *' and 'B*'.'D' is extremly secure andanxious.'E' lets White have a simpleattack.'F' is bad shape.'G' is possible if Black isvery strong all around.'H' emphasizes the centernot caring for the side.

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* GOOD VARIATION *

'A' can be good, if Black issafe on both sides. 'B'depends on the ladder.'C *' is joseki to destroyBlack territory.'D' is a special strategy ifthe center is mostimportant.'E' is too soft.'F' can be good as part of acenter moyo.'G' shows follow-ups forBlack.

If White made a mistakeand Black has the ladder,Black can cut.

'A *' is joseki.'B' is esp. good with theladder.'C' helps White makingterritory.'D' takes sente withoutfighting.If White 4 was wrongbecause the center is moreimportant than the side,Black punishes on 'E'.

'A *' is joseki.After 'B' White is heavy,after 'C' White hasunsuccessful shape.

Sacrifice for sente moveswhich settle White.'A *' is joseki, 'B' dependson the ladder.'C' makes a fight, which isnot bad for Black, possible.'D' is possible.'E' invites a territorial loss.

'A *' is joseki, 'B' is a trickplay.

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'A *' is joseki, 'B' is a kovariation, if Black doesn'twant to White anothersente move.

'A *', 'B' or 'C' are good.

* GOOD VARIATION *

'A' and 'B' start the ko. 'C'is gote.

Necessary to eliminate badaji.

'A' is correct, 'B' is gettingtricked.

'A' takes territory forinfluence, 'B' starts a fight.

'A' if the ladder is White, 'B'if the ladder is Black.

'A' settles White, 'B' and 'C'start the fight.

'A' or 'B'.

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'A' or 'B' are ok, 'C' is bad.

'A' is correct, 'B' helpsWhite.

'A' with the ladder, 'B' ifthe ladder is White.

White makes a positionwith 'A' on the lower, with'B' on the upper side.

'A' is correct, 'B' is amistake.

'A' is light, 'B' is thick.

'A' makes the top rightcorner big, 'B' avoidsstrenghening White.

'A' or 'B'.

'A' and 'B' are correct, 'C'unnecessarily is gote.

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'A' is correct, 'B' is anoverplay.

White A has becomeattractive.

Black makes territory onthe 7th line.

'A', 'B' or 'C'.

'A' or 'B'.

White A has becomeimpossible.

White goes to the centeronto or near 'A'. He aims atB later. Playing 'B' now istoo early.

'A' is correct, 'B' and 'C' aremistakes.

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'A' or 'B'.

'A' or 'B'.


Black threatens A.

'A' or 'B'.

'A *' is joseki to developthe center.'B' is a variation to preventBlack territroy.C is a possibility after someinvasions in the upper rightcorner.

'A *' is joseki, 'B' issometimes possible.

'A *' is the usual joseki, 'B'emphasizes the center.'C' starts a fight which canbe possible.

* GOOD VARIATION *

Black makes territory onthe upper side with 'A' or

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on the lower side with 'B','C' or 'D'.'E' shows White'sfollow-ups.

'A' is usual. 'B' takes sentefor influence.

'A' or 'B'.

If Black 11 is better on the

circled position, White doesnot play10.

White A has become lessdangerous.

Later.

'A' is correct, 'B' issubmissive.

'A' leads to a necessaryfight, 'B' is too nild.

'A' is necessary. Thefollowing fight will provethe value of Black 5.Avoiding the fighr with 'B'or 'C' is too fearful.

'A' or 'B'.

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White aji at A.

'A' is correct. 'B' is anoverplay. 'C' is notrecommended.'D' is inferior.

'A' is correct, after 'B'White gets heavy.

'A' or 'B'. White settles, nodependency on a ladder.

'A' leads to a fight, 'B'avoids it.

'A *' is correct, 'B' is notrecommended.

'A *' is correct. 'B' makesless territrory and givesWhite more influence.

'A *' is usual. 'B' ispossible. 'C' leads to adisadvantageous fight.

* GOOD VARIATION *

White follow-ups are 'A' to'D'.

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'A' is usual, 'B' starts afight.

'A' is correct.'B' is correct, if there is anadditional Black stone onthe triangled position.

'A' is correct, 'B' misses thechance of punishing White.

White heavy.

White A is no more a bigthreat.

'A' splits Black who securesterritory on both sides.'B' needs the ladder.

'A' if the ladder is Black. 'B'if the ladder is White.

Fight in Black's favor.

'A' is being split, 'B' is beingpressed down low.

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'A' or 'B'.

'A' bad shape, 'B' is slow.

'A *' prevents Whitepressing down on the lowerside, White presses on theupper side.'B' has the same idea as'A', but an a whole boardthinking.'C' is a good preparation

before playing 'A'.'D' is the contrary of 'A',prevents White pressingdown on the upper side.'E' starts fighting, Blackneeds both ladders.'F' is a good variation.

Before continuing thejoseki, Black likes to makean extension onto one ofthe triangled stones.'A *' presses down. 'B'defends the center, needsthe ladder. 'C' doesn't needthe ladder, but doesn'tclose off the center.

'A *' cuts the side.'B' emphasizes the center,'C' leaves too many cuts.

* GOOD VARIATION *

Black aims at A or defendson B.

'A' for territory or 'B' forattack.


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'A' with a White ladder, 'B'with a Black ladder.

'A' or, if White can't block,'B'.

'A' if Black 7 was correct,'B' if it wasn't.

'A' after Black 7 waswrong, 'B' if White 8 wasan overplay.

'A' or 'B'.


'A' if White has the ladderto the top, 'B' if White hasthe ladder to the bottom,'C' without any ladder.

'A' depends on the ladder,'B' gives White a gooddevelopment.

'A' with a Black ladder, 'B'with a White ladder.

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'A' or 'B' are ok.

White sabaki.

'A' with a White ladder, 'B'is a Black ladder.

'A' is correct, 'B' leaves toomany cuts.

'A' or 'B' are possible.

This move depends on theladder.

'A *' is correct, 'B' isquestionable. 'C' ispossible. 'D' or 'E' arepossible.

'A *' to make a position inthe center, 'B' to cutdeeper into the Blackposition.

'A *' is correct, 'B' helpsWhite to build influence.

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'A *' is correct, 'B' isquestionable.

* GOOD VARIATION *

'A' or 'B'.

'A' starts a fight, 'B' ispossible.

White is light and caninvade the Black corner.

White can invade the Blackcorner, Black aims at A.

White aims at A.

'A' makes territory, 'B'attacks.

'A *' is a simple attack.'B *' is a complicatedattack.'C' is too soft.'D *' takes territory forinfluence, White canreverse the result.

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'E' is bad.

'A' in this position, 'B' ifBlack has territory on thelower half of the right side.

'A' pulls Black a line. 'B'doesn't.

'A' is correct, 'B' is too thin.

* GOOD VARIATION *

This continuation may bepossible.

'A *' is joseki, 'B' and 'C'are variations.'D' is bad.

'A *' is joseki.'B' risks a counterattack.'C' aims to connect.'D' weakens Black 1 and iswrong.

'A' in this position, 'B' ifBlack has an extension inthe lower half.

* GOOD VARIATION *

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'A' defends, 'B' is acounterattack.

'A' in this position, 'B' ifBlack has an extension inthe lower half.

Aims at A.

Light.

Figthting on 'A' isnecessary, 'B' misses theside, 'C' gives White centermoves.


'A is correct and furikawari,'B' is a mistake.

The loss of the corner isn'tbad, because it could belost by a sansan-invasion.

'A' is possible, 'B' is bad.

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White dead.

'A' or 'B' are ok.

'A *' is joseki.'B' is too anxious.'C' fails to connectimmediately and starts afight..

'A *' is joseki.'B' gives Black thickness forterritory.

'A *' is joseki,'B' is bad as White gets aponnuki.'C' gives a low position or afight.'D' is bad.

'A *' is correct.

'B' is a trick play.

'A *' takes influence leavingaji giving territory.'B' takes the corner for theside giving Black goodshape, but fails with anadditional Black stone onthe triangled position..'C *' takes territory givinginfluence.

* GOOD VARIATION *

Later, White can close thecenter with 'A' or use hisside-and-corner-aji on 'B'.

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'A' takes the corner, 'B'takes the side.

'A' is correct. If the varitionis wrong because of anadditional Black stone onthe triangled position, only'B' is possible but fails.

'A' keeps the corner, 'B'fails.

Blacak lives.

Proof of life.

'A *' is joseki, 'B' is amistake.

'A *' is joseki, 'B' fails tohurt the triangled stones.'C' captures, if the squaredstone is Black.

'A *' or 'B'.

* GOOD VARIATION *

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'A' is correct, 'B' attacksWhite and is also possible.'C' is useless.

White doesn't connectbefore the endgame.

'A' is correct, 'B' is gettingtricked.


'A' to press, 'B' to fight.


White saves some stoneson 'A' or 'B' and loses theother stones.

'A *' secures territory.'B' is not aggressiveenough.

'A *' or, with the ladder 'B'.'C' gives White morethickness.

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'A *' is joseki.'B' emphasizes the centerof the lower right side.'C' is light.

* GOOD VARIATION *

Securing more territory on'A' is correct. Black canprevent White influence on'B' before 'A'.Fighting on 'C' is anoverplay.

White makes influence on'A' or attacks on 'B', 'C' or'D'.

'A' or 'B'.

'A' is correct, 'B' and 'C' aremistakes.

'A' is sabaki if Black has theladder.'B' initiates the ladder.

'A' is correct, 'B' givesWhite much influence.

White has influence.

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No commercial distribution without permission. Contact ...moyogo.com/PDF/R10.pdf'C *' is joseki to destroy Black territory. 'D' is a special strategy if the center is most important