:: Igo Hatsuyôron 120 (2020)

Variations of Our Solution (IIIa)

No Early Kikashi

This chapter explains all variations, as far as they do not relate specifically to the professional solution.

This is an extraction from the "Variations of Our Solution (III)" (513).



Order of Updates

At the beginning of the year, Dany introduced his atekomi to us, which leads to Dany's Ko.

In the context of this ko, we began our investigations into what effect it would have if Black did without his kikashi beforehand, especially after Joachim's idea to tenuki at the very beginning (instead of playing KataGo's solid connection).

Joachim discovered the value of White's kikashi in the lower left corner.

A few months later, Dany found that White's atari (played after her wedge in the left centre) should not be played so early, but kept in reserve as a ko threat.
However, for a long time we mistakenly thought that this atari was an additional ko threat for White, simplifying the ko fight for her (see also below).

Dany also found that (especially in conjunction with an earlier White move in the hanezeki that pre-empts Black's kikashi there) White might be able to gain decisively by not connecting her two stones in the lower right. We called this "Dany's Sacrifice".

It was a big shock when I noticed that we had taken the order of moves of several exchanges (especially with "natural" looking moves) too easy, not considering their effect on the number of Black's Main Semeai Liberties at the moment of White's decision point (when she hs to choose between Capture, and Semeai, Variation).
That was the starting point of my colour coding of the board edges (please refer to the respective legend below), making the status of the Main Semeai Liberties easily recognizable even in earlier stages of the game.

In this context, and in conjunction with Dany's atekomi, Joachim found that Black's atari at White's two stones in the lower left should be played very early. IF White connected (i.e. refuted Dany's Sacrifice), Black would gain two Main Semeai Liberties (what would remove some of his restrictions).

Joachim introduced his Final Ko in the Semeai Variation, but only as a side note. During my further investigations on this subject, it turned out that its application cases were far more numerous than Joachim had assumed.

Some special cirumstances given, Joachim's Final Ko will make it impossible for White to win the Semeai Variation if Black's large group has "only" nine Main Semeai Liberties (surely you will know already the Black's group survives the Semeai Variation with ten Main Semeai Liberties).

Joachim found another mistake in the order of moves, related to the number of Black's Main Semeai Liberties. If Black is par with the Punishment Semeai Liberty Level, he must not play his push at the top. White will continue with the Main Semeai thereafter, winning the Punishment Semeai.

When working on the presentation of Dany's atekomi and the following Dany's Ko without White's atari in the left centre having been played beforehand, I realised that White's atari was not an additional ko threat. Black still has his atari at White's two stones in the lower right to be used as a ko threat, compensating for White's atari in the centre.
Dany's atekomi loses one tempo in the Main Semeai in the abovementioned case, so that Black is then able to start Dany's Ko immediately.


Colours of the Boards' Edges

Darkgrey = 6 Main Semeai Liberties:
Black has fallen below the Punishment Semeai Liberty Level. White will choose the Capture Variation, capturing not only the hanezeki's tail, but also Black's large group int he upper right.

Darkred = 7 Main Semeai Liberties:
Black is bound to follow the Main Semeai, as he must not lose a single tempo in the Main Semeai. Black can play outside the Main Semeai area, only if White did so just before.

Brown = 8 Main Semeai Liberties:
Under certain cirumstances (depending on the number of territory reducing moves Black has to play to get a satisfactory score in the Capture Variation), White must be careful to not lose a single tempo in the Main Semeai, and so might be restricted in her movements on the baord.

Pink = 9 Main Semeai Liberties:
Under certain circumstances (and still nine Main Semeai Liberties at White's decision point), White might fall prey to Joachim's Final Ko in the Semeai Variation.

Lightgrey = 10 or more Main Semeai Liberties:
Under certain circumstances (and still nine Main Semeai Liberties at White's decision point), White might fall prey to Joachim's Final Ko in the Semeai Variation.
If Black still has ten Main Semeai Liberties at White's decision point, Black's large group in the upper right will survive the Semeai Variation, resulting in White losing the game by a very large margin.

Lightbrown:
Capture Variation.

Darkbrown:
Semeai Variation.

Cyan:
Analysis mode. Special restrictions apply (e.g. a ban on giving atari at Black groups, or capturing Black groups that are in atari).




    Variation Tree    

No Early Kikashi

For your convenience, a SGF of the above position for download.




(.1) @ 648ab+2 +2Captures White's single stone in the upper right
(.1) @ 648ac+1 ++Pushes from above in the left centre
@ 648adJigo JigoBumps in the left centre
@ 648acPlays the central attachment in the left centre
@ 648ae+1 ++Continues with the Main Semeai
@ 648afJigo ++Continues with the Main Semeai
@ 648aeConnects her two stones that were in atari
@ 648ag+1 ++Pushes in the upper right corner
@ 648aeJigo ++Connects his stone in the lower right
@ 648ac+2 ++Plays his kikashi in the hanezeki
(.2) @ 648ah+1 +1Bumps in the left centre
@ 648ai+2 JigoPlays Dany's atekomi
@ 648ahPlays the central attachment in the left centre
(.3) @ 648aj+1 +1Plays the central attachment in the left centre
@ 648ak+1 +1Continues with the Main Semeai
@ 648am+1 ++Connects the ko in the centre
@ 648akContinues with the Main Semeai
@ 648ajCaptures the ko in the left centre
(.4) @ 648an+1 +1Blocks at the top
(.5) @ 648ao+2 +2Premtps Black's kikashi in the hanezeki
@ 648ap+1 +3Plays atari in the hanezeki
@ 648aqJigo +4Connects in the left centre
@ 648ar+3 ++Threatens to capture two Black stones below
@ 648as+2 ++Continues with the Main Semeai
@ 648arWhite connects her stones in atari
@ 648aqConnects her single stone at the upper edge
@ 648at+2 ++White connects her stones in atari
@ 648aqContinues with the Main Semeai
@ 648apGives atari at White's just played stone
@ 648au+3 ++Plays Dany's atekomi
@ 648apGives atari in the left centre.
@ 648av+1 +3Continues with the Main Semeai
@ 648apPlays the central attachment in the left centre.
@ 648aw+1 +3Gives atari at White's two stones in the lower left
@ 648ax+1 +3Blocks at the top
@ 648xa+1 +3Takes territory in the left centre
@ 648awConnects her single stone at the upper edge
@ 648apPlays the push at the top
@ 648xb++Continues with the Main Semeai
@ 648ap+1 +3Blocks at the top immediately
@ 648aoPushes at the top

(.1) @ 648ay+2 +2Closes the hole in the left centre
@ 648az+2 +2Bumps in the left centre
@ 648ba+1 +3Plays his gote kikashi in the hanezeki
@ 648azContinues with the Main Semeai
@ 648ayPlays her kikashi in the hanezeki
(.1) @ 648bb+3 +2Bumps in the left centre
(.1) @ 648bc+3 +3Captures White's single stone at the upper edge
(.2) @ 648bd+3 +2Continues with the Main Semeai
@ 648be+3 +3Gives atari in the lower right corner
@ 648bdCaptures White's single stone at the upper edge
(.1) @ 648bf+3 +3Connects solidly in the centre
(.2) @ 648bg+3 +4Gives atari at the upper edge
@ 648bdGives atari at White's just played stone
@ 648bh+3 +4Connects the ko
@ 648bdConnects at the upper edge
@ 648bb+3 +3Connects in the left centre
(.2) @ 648bi+4 +2Takes a liberty of Black's group in the left centre
@ 648bj+3 +3Connects in the left centre
@ 648biCaptures White's single stone at the upper edge
(.3) @ 648bk+4 +2Plays the wedge in the left centre
@ 648bm+5 +1Cuts in the left centre
@ 648bkExtends in the left centre
@ 648ay+4 +2Connects her single stone at the upper edge
(.2) @ 648bn+3 +3Gives atari at White's two stones
@ 648bo+3 +3Captures White's single stone at the upper edge
@ 648bp+3 +3Connects in the left centre
@ 648bq+3 +3Gives atari at the upper edge
@ 648bpPlays KataGo's solid connection
@ 648boGives atari at White's just played stone
@ 648bnConnects in the left centre
(.3) @ 648br+3 +3Captures White's stone at the upper edge
@ 648bs+3 +2Bumps in the left centre
@ 648bt+1 ++Plays her kikashi in the lower left corner
(.1) @ 648buJigo ++Throws-in in the left centre
(.2) @ 648bvJigo JigoContinues with the Main Semeai
@ 648btPushes from above
@ 648bsContinues with the Main Semeai
@ 648bwJigo JigoConnects her two stones in the lower left
@ 648bsChooses Dany's Sacrifice
@ 648brPlays the wedge in the left centre
@ 648bx+3 +3Takes White's group a liberty
@ 648by+4 +2Plays atari in the left centre
@ 648bxContinues with the Main Semeai
@ 648brCaptures White's wedge
@ 648bz+2 +3Plays the central attachment in the left centre
@ 648brPlays Dany's atekomi
@ 648ca++Continues with the Main Semeai (demonstrative)
@ 648brSecures territory in the centre
@ 648cb+1 +1Connects her two stones in the lower left
@ 648br+2 +3Chooses Dany's Sacrifice
@ 648aoPlays KataGo's solid connection
(.1) @ 648cc+3 +3Plays her kikashi in the hanezeki
(.2) @ 648cd+2 +3Continues with the Main Semeai
(.1) @ 648ce+3 +2Connects her stone at the upper edge
(.2) @ 648cf+3 +2Threatens in the left centre
@ 648cg+3 +2Blocks at the upper edge
@ !648cfPushes in the left centre
@ 648cdTakes Black's partial group a liberty
(.1) @ 648ch+2 +3Captures White's stone at the upper edge
(.2) @ 648ciJigo +4Gives atari in the hanezeki
@ 648cdConnects in the left centre
@ 648aoPushes from above in the left centre
@ 648cj+2 +2Plays her kikashi in the hanezeki
@ 648aoConnects her two stones in the lower left
@ 648ck+1 ++Continues with the Main Semeai
@ 648ao+1 +1Gives atari in the hanezeki
@ 648abPlays the wedge in the left centre

@ 648cm+2 +2Plays his kikashi in the hanezeki
@ 648cn+2 +4Plays her kikashi in the lower left corner
@ 648cmPlays Dany's atekomi
(.1) @ 648abGives atari from the right
(.1) @ 648co+2 +3Pre-empts Black's kikashi in the hanezeki
(.1) @ 648cp+2 +3Plays KataGo's solid connection
(.2) @ 648cq+2 +3Captures White's stone at the upper edge
(.3) @ 648cr+1 +4Play a indirect defense in the left centre
@ 648coGives atari at White's two stones
@ 648cs+3 +3Connects her two stones in atari
@ 648coContinues with the Main Semeai
(.2) @ 648ct+2 JigoPlays the central attachment in the left centre
@ 648cu+2 JigoPlays his kikashi in the hanezeki
@ 648ctDefends the lower left corner
@ 648cv+1 +3Pre-empts Black's kikashi in the hanezeki
@ 648ct+1 +1Connects her stone at the upper edge
(.3) @ 648cw+1 +1Blocks at the top
(.4) @ 648cx+3 +2Plays Dany's atekomi
@ 648cy+2 +2Plays his kikashi in the hanezeki
(.1) @ 648cz+>20Cuts in the left centre
(.2) @ 648da+>5Captures the hanezeki's tail
@ 648cyWhite connects in the hanezeki
@ 648cxGives atari at White's two stones in the lower left
@ 648db+3 +2Pre-empts Black's kikashi in the hanezeki
(.1) @ 648dc+1 +3Plays atari in the hanezeki
(.2) @ 648dd+1 +4Captures White's two stones in the lower left
(.3) @ 648de+2 +3Captures White's single stone at the upper edge
@ 648dfGives atari at White's stone above
(.1) @ 648df+3 +2Connects her stone in atari
(.2) @ 648dg+4 +2Blocks at the top
(.3) @ 648dh+4 +2Connects her single stone at the upper edge
@ 648dbInitiates Dany's Ko
(.1) @ 648di+4 +2Pushes at the top
(.2) @ 648dj+4 +2Captures White's two stones in the lower left
@ 648dbCaptures Dany's Ko
@ 648dk+12 +2Recaptures Dany's Ko
@ 648dbContinues with the Nakade Sequence
(.1) @ 648dm+4 +2Blocks at the top
@ 648dn+3 +3Connects Dany's Ko
@ 648dmCaptures White's single stone at the upper edge
(.2) @ 648do+4 +2Connects her single stone at the upper edge
@ 648dbRecaptures Dany's Ko
@ 648dp+4 +2Recaptures Dany's Ko
@ 648dq+4 +6Pushes in the upper right corner
@ 648dpContinues with the Main Semeai
@ 648dbCaptures White's two stones in the lower left
@ 648dr+4 +2Connects Dany's Ko
@ 648db+4 +2Connects her single stone at the upper edge
@ 648cxConnects her two stones

@ 648ds+2 +2Connects solidly
(.1) @ 648dt+2 JigoBlocks at the top
(.2) @ 648du+2 JigoPre-empts Black's kikashi in the hanezeki
@ 648dsConnects her single stone at the upper edge
@ 648cxGives atari at White's stone above
@ 648dv+1 +1Connects solidly
@ 648dw+1 +1Connects her single stone at the upper edge
@ 648dx+1 +1Plays her kikashi in the lower left corner
@ 648dwBlocks at the top
@ 648dy+1 +1Plays her kikashi in the lower left corner
@ 648dz+1 ++Pre-empts Black's kikashi in the hanezeki
@ 648dvPlays her kikashi in the lower left corner
@ 648cxCaptures Dany's Ko
@ 648ea+1 ++Pre-empts Black's kikashi in the hanezeki
@ 648cxCaptures Black's nakade stones
@ 648eb+1 +1Recaptures Dany's Ko
@ 648ec+2 +2Plays his kikashi in the hanezeki
@ 648ebConnects at the left.
@ 648ed+9 +1Pre-empts Black's kikashi in the hanezeki
@ 648ee+1 ++Plays his kikashi at the top
@ 648ef+9 ++Plays her kikashi in the lower left corner
@ 648eg+6Connects at the lower left edge
@ 648eh+9Connects her three stones in atari
@ 648egCaptures the hanezeki's tail
@ 648efBlocks at the top
@ 648eeContinues with the Nakade Sequence
@ 648edThrows-in at the lower left edge
@ 648ei+9 +1Continues with the Main Semeai (illustrative)
@ 648ej++Pushes from the outside
@ 648eiCompletes the nakade shape
@ 648edCaptures Black's just played stone
@ 648ek+10 +2Gives atari at Black's two stones
@ 648edContinues with the Main Semeai
@ 648ebContinues with the Nakade Sequence
@ 648em+1 +1Connects her single stone at the upper edge
@ 648en+1 ++Pre-empts Black's kikashi in the hanezeki
@ 648emContinues with the Main Semeai
@ 648ebBlocks at the top
@ 648eo+1 +1Pre-empts Black's kikashi in the hanezeki
@ 648ebBlocks at the top
@ 648cxContinues with the Nakade Sequence

@ 648ep+1 +1Connects his two stones at the left
@ Plays his kikashi in the hanezeki
@ 648eq++Gives atari at Black's two stones at the left
@ 648cx+1 +1Connects in the hanezeki
@ 648er+1 +1Pushes at the top
@ 648es+1 +1Plays the forcing move in the lower left corner
@ 648et+1 +1Continues with the Main Semeai
@ 648esPlays a ko threat
@ 648erBlocks at the top immediately
@ 648cxConencts his two stones at the left
(.1) @ 648eu+1 +1White connects Dany's Ko
(.2) @ 648ev+1 +1Connects her single stone at the upper edge
@ 648cxPlays the forcing move in the lower left corner
@ 648ew+1 +1Connects her stone at the upper edge
@ 648ex+1 +1Captures Black's stone at the third line
@ 648ewCaptures Black's stone at the edge
@ 648ey+1 +1Ko threat assuming KataGo's reply to the guzumi
@ 648ewThrows-in at the top right as a ko threat
@ 648cxBlocks at the top
@ 648ez+1 +1Captures Dany's Ko
@ 648cx+1 +1Connects in the centre
@ 648abForces in the lower left corner

(.1) @ 648fa+2 JigoPlays his kikashi in the hanezeki
@ 648fb+1 +1Throws-in at the lower edge
@ 648faPlays the central attachment in the left centre
@ 648fc++Cuts White apart in the hanezeki
@ 648faConnects below
(.2) @ 648fd+2 JigoConnects at the lower edge
(.1) @ 648fe+2 +2Pre-empts Black's kikashi in the hanezeki
(.3) @ 648ff+1 +1Plays Dany's atekomi
@ 648fg+1 +1Creates Dany's Ko shape
@ 648fh+1 +1Captures Black's nakade
@ 648fi+1 +1Recaptures the ko
@ 648fj+2 +2Plays his kikashi in the hanezeki
@ 648fiConnects at the left edge
@ 648fk+13 +1Pre-empts Black's kikashi in the hanezeki
@ 648fiContinues with the Nakade Sequence
@ 648fhContinues with the Nakade Sequence
@ 648fg+1 +1Connects in the hanezeki
@ 648ff+3 +1Connects her stone in atari
(.3) @ 648fm+1 +1Blocks at the top
@ 648fd+1 +1Plays the central attachment in the left centre
@ 648fn+2 +2Pushes at the top
@ 648fdPlays his kikashi in the hanezeki
(.3) @ 648fo+2 +4Gives atari at White's two stones in the lower left
(.1) @ 648fp+2 +4Connects her two stones in atari
(.2) @ 648fq+2 ++Pre-empts Black's kikashi in the hanezeki
@ 648fr+1 ++Connects her two stones in atari
@ 648fqConnects her stone at the upper edge
@ 648foThrows-in at the lower edge
@ 648fsJigo +3Captures White's two stones
@ 648ft+1 +3Gives atari in the hanezeki
@ 648fsPushes at the top
@ 648fu+1 +3Plays her kikashi in the hanezeki
@ 648fsBlocks at the top
@ 648fv+1 +3Gives atari in the hanezeki
@ 648fsPlays KataGo's solid connection
@ 648foPlays his kikashi in the hanezeki
@ 648fwJigo JigoConnects in the hanezeki
@ 648foConnects her two stones in atari
@ 648abPlays KataGo's solid connection
(.1) @ 648fx+1 +2Pre-emtps Black's kikashi in the hanezeki
@ 648fy+2 ++Connects her two stones in atari
@ 648fxContinues with the Main Semeai
(.2) @ 648fz+1 +1Blocks at the top
@ 648abThrows-in at the lower edge
@ 648ga++Continues with the Main Semeai
@ 648abBlocks at the upper edge
@ 648gb++Continues with the Main Semeai
@ 648abConnects her two stones
@ 648gc+1 JigoPre-empts Black's kikashi in the hanezeki
@ 648gd+2 +2Gives atari in the hanezeki
@ 648gcPushes in the upper right corner
@ 648ge+1 JigoPlays her kikashi in the hanezeki
@ 648gcContinues with the Main Semeai
@ 648ab+2 +4Continues with the Main Semeai

(.2) @ 648gf+2 +4Plays KataGo's solid connection
@ 648gg+1 +2Pre-empts Black's kikashi in the hanezeki
@ 648gh+1 +1Captures White's stone in the upper right
@ 648ggCaptures White's stone at the upper edge
@ 648gi+1 JigoConnects her stone at the upper edge
@ 648ggConnects in the upper right
@ 648gfConnects in the upper right
@ 648gj+1 +1Pre-empts Black's kikashi in the hanezeki
@ 648gfContinues with the Main Semeai
@ 648gkJigo +4Continues with the Main Semeai
@ 648gfConnects her two stones in atari
(.3) @ 649ab+2 +4 Plays the upper kikashi in the hanezeki
(.4) @ 649ac+2 +4 Plays the lower kikashi in the hanezeki
(.5) @ 649ad+2 +4 Gives atari at White's two stones in the lower left
@ 648aaPlays his kikashi in the hanezeki

(.1) @ 648gm+2 +4Pushes at the top
@ 648gn+2 +2Captures White's stone in the upper right
@ 648gmPlays KataGo's solid connection
(.2) @ 648go+2 +4Plays KataGo's solid connection
(.1) @ 648gp+2 +4Plays the wedge in the left centre
(.2) @ 648gq+2 +4Connects her stone in the upper right
@ 648goPushes from above in the left centre
(.1) @ 648gr+1 +1Blocks at the top
(.2) @ 648gsJigo JigoConnects her stone at the upper edge
@ 648goConnects her stone in the upper right
@ 648gt+2 +4Captures White's stone at the upper edge
@ 648goPushes at the top
(.3) @ 648gu+2 +2Blocks the lower left corner
@ 648gy+1 +2Pushes from above in the left centre
(.1) @ 648gz+1 +1Blocks at the top
@ 648ha+2 +3Plays KataGo's solid connection
@ 648gzCaptures White's stone in the upper right
@ 648hb+1 +1Plays the central attachment in the left centre
@ 648gzConnects her stone at the upper edge
(.2) @ 648hc+1 +1Connects her stone at the upper edge
(.3) @ 648hd+1 +1Plays the central attachment in the left centre
@ 648gyConnects her stone in the upper right
@ 648he+2 +1Plays KataGo's solid connection
@ 648gyCaptures White's stone at the upper edge
@ 648hf+1 +2Plays the central attachment in the left centre
@ 648gyBlocks at the upper edge
@ 648hg+2 +4Plays KataGo's solid connection
@ 648hh+3 +4Connects the ko at the upper edge
@ 648hgContinues with the Main Semeai
@ 648gy+1 +2Continues with the Main Semeai
@ 648guConnects her stone in the upper right
(.1) @ 648hi+2 +1Closes the hole in the left centre
@ 648hj+2 +1Plays the central attachment in the left centre
@ 648hiConnects her stone at the upper edge
(.2) @ 648hi+2 +1Plays KataGo's solid connection
@ 648guCaptures White's stone at the upper edge
@ 648gv+2 +4Pushes from above in the left centre
@ 648guPlays the wedge in the left centre
@ 648gw+2 +2Pushes in the left centre
@ 648gx+3 +3Connects below
@ 648gwCaptures White's two stones
@ 648gu+2 +2Connects her two stones
(.4) @ 648hm+2 +1Closes the hole in the left centre
@ 648hn+1 +3Plays the wedge in the left centre
@ 648hpJigo +5Cuts in the left centre
@ 648hnPushes in the left centre
@ 648hq+1 ++Secures territory in the centre
@ 648hr+1 ++Connects White's stone in the upper right
@ 648hqCaptures White's stone at the upper edge
@ 648hsJigo JigoBlocks a the top
@ 648hqConnects her stone in the upper right
@ 648hn+1 +3Connects her stone in the upper right
@ 648ho+1 +3Captures White's stone at the upper edge
@ 648hn+1 +2Gives atari in the centre
@ 648hmBumps in the left centre
(.1) @ 648ht+2 +1Connects her stone in the upper right
@ 648hu+2 +1Pushes at the top (before capturing at the top)
@ 648hv+3 +1Gives atari at the upper edge
@ 648huGives atari in the centre
@ 648htPlays KataGo's solid connection
@ 648hw+2 +2Blocks at the top
@ 648htConnects her stone at the upper edge
(.2) @ 648hx+1 ++Plays Dany's atekomi
@ 648hy+1 ++Connects in the left centre
@ 648hxConnects in the lower left corner
@ 648hmPlays the central attachment in the left centre
(.1) @ 648hz+2 +5Blocks at the top
(.2) @ 648ia+2 +5Secures territory in the centre
@ 648hmConnects her stone at the upper edge
@ 648ib+3 ++Connects, preventing a White throw-in
@ 648hmGives atari in the centre
@ 648ic+1 +1Continues with the Main Semeai
@ 648hm+2 ++Throws-in in the left centre
@ 648aaCaptures White's single stone in the upper right

(.1) @ 648id+2 +2Threatens Black's two stones at the lower edge
@ 648ie+1 +1Pushes from above
(.1) @ 648if+1 +1Forces in the lower left corner
(.2) @ 648ig+1 +1Plays the central attachment in the left centre
(.3) @ 648ihJigo JigoBlocks at the top
@ 648ieConnects her stone at the upper edge
@ 648idPlays the wedge in the left centre
(.1) @ 648ii+1 +1Plays the central attachment in the centre
(.1) @ 648ij+1 +1Connects her stone at the upper edge
(.2) @ 648ik+1 +1Blocks at the top
@ 648iiSecures two points of territory in the centre
(.2) @ 648im+2 +2Plays Dany's atekomi
@ 648idPlays the second kikashi in the lower left corner
@ 648in+2 JigoConnects at the lower edge
@ 648id+2 +4Plays KataGo's solid connection
(.2) @ 648io+1 +1Pushes from above in the left centre
(.1) @ 648ip+1 +1Plays a forcing move in the lower left corner
(.2) @ 648iqJigo JigoPlays a forcing move in the centre
@ 648ioPlays the central attachment in the left centre
@ 648ir+1 +1Connects below
@ 648is+2 +2Pushes at the top
@ 648irDefends the lower left corner
(.1) @ 648it+1 +1Blocks at the top
(.2) @ 648iu+1 +1Forces in the left centre
@ 648irConnects her stone at the upper edge
@ 648ioPlays a wedge
@ 648ivJigo JigoBlocks at the top
@ 648ioConnects her stone at the upper edge
@ 648iw+1 +1Continues with the Main Semeai
@ 648io+1 ++Connects the ko
(.3) @ 648ix+1 +1Blocks at the top
(.1) @ 648iy+1 +1Closes the hole in the left centre
(.1) @ 648izJigo JigoPlays the wedge in the left centre
@ 648jaJigo JigoCuts in the left centre
@ 648izPushes in the centre
@ 648iyBumps in the left centre
@ 648jb+2 +2Plays KataGo's solid connection
@ 648iyConnects above
(.1) @ 648jc+1 +1Plays the central attachment in the left centre
(.1) @ 648jd+2 +2Plays atari in the left centre
(.2) @ 648je+2 +2Defends the lower left corner
@ 648jf+2 +5Secures territory in the left centre.
@ 648jeConnects her stone at the upper edge
@ 648jcCaptures White's single stone at the upper edge.
@ 648jg+1 +1Plays her kikashi in the lower left corner
@ 648jcSecures territory in the left centre.
@ 648jh+1 +1Plays her kikashi in the lower left corner
@ 648jcThreatens Black's two stones below
@ 648ji+2 +5Answers from below
@ 648jj+3 +1Connects in the left centre
@ 648jiConencts at the lower edge
@ 648jcAnswers from the left
@ 648jk+1 +5Throws-in in the left centre
@ 648jcPlays her kikashi in the lower left corner
(.2) @ 648jm+1 +Connects her stone at the upper edge
@ 648iyPlays her kikashi in the lower left corner
@ 648jn+1 +1Plays KataGo's solid connection
@ 648iyConnects at the lower edge.
(.1) @ 648jo+1 +1Plays Dany's atekomi
@ 648jp+2 ++Connects in the left centre
@ 648joCaptures White's stone at the upper edge
(.2) @ 648jq+1 +1Connects her stone at the upper edge
@ 648iyPlays the central attachment in the left centre
(.1) @ 648jr+2 +2Gives atari in the centre
@ 648js+3 ++Continues with the Main Semeai
@ 648jrConnects in the left centre
(.2) @ 648jt+2 +2Connects in the left centre
@ 648iyCaptures White's stone at the upper edge
(.1) @ 648ju+1 +1Blocks at the upper edge
@ 648jv+2 +2Connects the ko at the upper edge
@ 648juGives atari in the centre
@ 648jw+1 +1Throws-in in the left centre
@ 648juCaptures the ko at the upper edge
@ 648jx+1 +1Continues with the Main Semeai
@ 648jy+1 ++Connects the ko at the upper edge
@ 648jxContinues with the Main Semeai
@ 648jz+2 ++Continues with the Main Semeai
@ 648jxRecaptures the ko at the upper edge
@ 648juConnects in the left centre
(.2) @ 648ka+1 +1Throws-in in the left centre
@ 648iyCreates territory in the centre
@ 648kb+2 +2Connects in the left centre
@ 648iyPushes at the upper edge
@ 648kc+1 +1Continues with the Main Semeai
@ 648iy+2 +5Throws-in in the left centre
(.2) @ 648kd+2 +2Defends his lower left corner
@ 648ke+1 +1Pushes from above in the left centre
@ 648kdPlays the wedge in the left centre
@ 648kf+1 +1Plays the central attachment in the centre
@ 648kdPlays Dany's atekomi
@ 648kg+2 +2Connects below
@ 648kdGives atari for initiating Dany's Ko
@ 648ixPlays KataGo's solid connection
(.4) @ 648khJigo JigoForces in the lower left corner
(.1) @ 648ki++Pushes at the top
@ 648kj+1 +1Pushes from above in the left centre
@ 648kk+>5Gives atari at the top
@ 648kjBlocks in the left centre
@ 648kiPlays the wedge in the left centre
@ 648km++Threatens Black's two stones at the lower edge
@ 648kiPlays Dany's atekomi
@ 648kn++Gives atari at the top
@ 648kiConnects at the lower edge
@ 648ko+>5Gives atari at Black's two stones at the left
@ 648ki+2 +2Blocks at the top
(.2) @ 648kp+2 +2Connects at the lower edge
(.1) @ 648kq+1 +1Blocks at the top
(.2) @ 648kr+1 +1Pushes from above in the left centre
@ 648kpPlays the wedge in the left centre
@ 648khPlays KataGo's solid connection
(.1) @ 648ksJigo JigoPushes from above in the left centre
(.2) @ 648ktJigo JigoPlays the wedge in the left centre
@ 648khPlays her second kikashi in the lower left corner
@ 648aaPlays the wedge in the left centre

@ 648ku+3 ++Closes the hole in the left centre
@ 648aaCaptures White's just played stone
@ 648kv+2 +2Plays Dany's atekomi
@ 648kw+2 +2Gives atari at White's two stones in the lower left
@ 648kx+1 +1Continues with the Main Semeai
@ 648ky+1 +1Continues with the Main Semeai
@ $648kz+3 +1Continues with the Main Semeai
@ 648kyGives atari at Black's four stones
@ 648kxPlays the atari in the left centre
@ 648ma+1 +1Connects in the left centre
@ 648mbJigo ++Connects the ko
@ 648maContinues with the Main Semeai
@ 648kxConnects his stone in atari
@ 648kwConnects her two stones
@ 648mc+2 +2Captures the nakade
@ 648md+1 +1Plays the peep in the lower left centre
@ 648mcPlays the atari in the left centre
@ 648kwPlays the atari in the left centre
@ 648me+2 +2Occupies a liberty of White's left-hand group
@ 648kwConnects his upper stone in atari
@ 648kvGives atari in the left centre
@ 648mf+2 +2Plays the atari in the left centre
@ 648mg+3 +1Continues with the Main Semeai (demonstrative)
@ 648mh+3 +3Continues with the Main Semeai (demonstrative)
@ 648mi+2 +3Oki at the left edge (after four reductions)
@ 648mhOki at the left edge (after three reductions)
@ 648mgCaptures White's lower stone
@ 648mfConnects the upper ko
@ 648mj+1 +5Continues with the Main Semeai (demonstrative)
@ 648mfCaptures White's other stone
@ 648kvPrepares for Dany's Ko
@ 648aaGives atari in the upper left centre

(.1) @ 648mk+2 +2Plays Dany's atekomi
@ 648mm+2 +2Connects below
(.1) @ 648mn+2 +2Connects her stone at the upper edge
@ 648mo+2 +2Pushes at the top
@ 648mnDefends his lower left corner
(.2) @ 648mp+2 JigoBlocks at the top
@ 648mq+2 +2Defends his lower left corner
@ 648mpCaptures White's stone at the upper edge
@ 648mmForces in the lower left corner
@ 648mr+2 JigoBlocks at the top
@ 648mmConnects her stone at the upper edge
@ 648mkGives atari in the centre
(.1) @ 648ms+2 +2Connects below
(.1) @ 648mt+2 +2Forces in the lower left corner
@ 648mu+3 +3Captures Dany's Ko
@ 648mtConnects at the lower edge
(.1) @ 648mv+2 +2Connects at the upper edge
(.2) @ 648mw+1 +1Connects Dany's Ko
@ 648mt+1 +1Blocks at the top
(.2) @ 648mx+1 +1Blocks at the top
@ 648ms+1 +1Connects her single stone at the upper edge
@ 648my+2 +2Pushes at the top
@ 648ms+1 +1Captures Dany's Ko
(.2) @ 648mz++Defends his lower left corner
@ 648mkCaptures Dany's Ko
@ 648na+3 ++Captures Dany's Ko (i.e. splits Nakade Sequence)
@ 648nb+5 +2Continues with the Main Semeai
@ 648naPlays her kikashi in the lower left corner
@ 648mkConnects at the left edge
(.1) @ 648nc+1 +1Blocks at the top
(.2) @ 648nd+1 +1Connects the ko
@ 648mkConnects her stone at the upper edge
@ 648ne+2 +2Captures Black's stone at the third line
@ 648mkCaptures Black's stone at the second line
@ 648nf+>10Connects Dany's Ko
(.1) @ 648ng+>10Plays from the top
(.1) @ 648nm+>10Attaches at the left edge
(.2) @ 648ni++Plays hane at the left edge
@ 648nfAttaches at the top edge
(.2)648nk++Plays geta in the corner
@ 648nfPlays from the left
@ 648nj+>10Descends to the upper edge
@ 648ngThrows-in at the left edge
@ 648mkAnswers White's ko threat
(.2) @ 648nn+1 +1Plays the central attachment
(.1) @ 648no+1 +1Blocks at the top
@ 648np+2 +2Gives atari in the centre
@ 648noCaptures White's stone at the top
@ 648nq+1 +1Blocks at the upper edge
@ 648noSecures territory in the centre
(.2) @ 648nr+1 w+1Creates territory in the centre
@ 648nnConnects her stone at the upper edge
(.3) @ 648nsJigo JigoForces in the lower left corner
(.1) @ 648ntJigo JigoDefends his lower left corner
(.2) @ 648nuJigo JigoCaptures White's stone at the upper edge
(.3) @ 648nvJigo +2Pushes at the top
@ 648nw+1 +1Connect at the lower edge
@ 648nvCaptures White's stone at the upper edge
@ 648nsPlays KataGo's solid connection
@ 648aaThreatens Black's two stones in the lower left corner

@ 648nx++Answers from the left
@ 648ny++Connects at the left
@ 648nxDefends the lower left corner
@ 648aaAnswers from below
(.1) @ 648nz+2 +2Plays Dany's atekomi
@ 648oa+2 +2Connects her single stone at the upper edge
@ 648nz+1 +1Blocks at the top
@ 648ob+1 +1Connects the ko
@ 648nz+1 +1Blocks at the upper edge.
(.2) @ 648oc+1 +1Plays the central attachment
(.1) @ 648od+1 +1Blocks at the top
(.2) @ 648oe+1 +1Secures territory in the centre
@ 648ocConnects her stone at the upper edge
@ 648aaThreatens in the lower left corner
(.1) @ 648of+2 +4Gives atari at White's two stones in the lower left
(.1) @ 648og+1 +1Throws-in at the lower edge
(.1) @ 648oh+1 +1Blocks at the top
@ 648oi+1 +1Plays KataGo's solid connection
@ 648ohCaptures White's stone at the upper edge
(.2) @ 648oj+1 +1Plays Dany's atekomi
(.3) @ 648okJigo JigoConnects her stone at the upper edge
@ 648ogContinues with the Main Semeai
(.2) @ 648om+1 +1Blocks at the top
(.3) @ 648onJigo JigoConnects her stone at the upper edge
@ 648ofConnects her two stones in atari
(.1) @ 648oo+1 +1Blocks at the top
(.2) @ 648opJigo JigoConnects her stone at the upper edge
@ 648ofThrows-in at the lower edge
@ 648oqJigo +2Connects his stone at the upper edge
@ 648ofGives atari in the hanezeki
(.2) @ 648or+2 +2Connects at the lower edge
@ 648os+2 +2Plays Dany's atekomi
@ 648or+2 JigoPlays the central attachment in the left centre
@ 648aaPlays KataGo's solid connection
(.1) @ 648ot++Continues with the Main Semeai
(.2) @ 648ou+1 +1Connects her single stone at the upper edge
@ 648aaConnects her two stones that were in atari
@ 648ov+2 +4Captures White's single stone at the upper edge
@ 648aaPushes at the top
@ 648ow+2 JigoContinues with the Main Semeai
@ 648aaCaptures White's single stone at the upper edge
@ 648ox+2 +4Continues with the Main Semeai
@ 648aaBlocks at the upper edge
@ 648oy+2 +2Continues with the Main Semeai
@ 648oz+1 +1Capture the ko at the upper edge
@ 648paJigoConnects the ko at the upper edge
@ 648ozContinues with the Main Semeai
@ 648oyContinues with the Main Semeai
@ 648aa+2 +4Connects at the upper edge

Copyright © 2020 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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