:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

VAR (C) (A) (.2) (.2) (.2) (.1)

(.3)

: ( 222hg)
Black gives atari in the upper left corner.

However, the ko fight has not yet been started, so this atari will become a lost move.

:
White captures immediately, of course.

: (124 222hk)
Black gives atari at the upper edge.

Blocking at at the left edge, instead, will become even worse.

:
White connects in the corner

Alternatively, she might give atari at , instead, not affecting the outcome of the game.


Ko: ; ; ;

:
There is no need for White to ignore Black's ko threat at the bottom edge.

:
Black can utilise his ko threats in the upper right - and later those in the hanezeki - because there will be no semeai with White's centre group.


Ko: ; ; ; ;

:
Black has run out of valid ko threats.

:
White ends the ko fight by giving atari at Black's cut-off stones.

:
Black captures several White stones in the upper right.

:
White continues with the endgame.

:
White will win the final ko and connect at .

White will win the game by 20 points.

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