:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

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

(.3)

: ( 222gx)
Black captures White's single stone at the top.

:
White connects solidly.

:
Now, Black gives atari at White's stone in the upper left corner.

:
White peeps at the upper edge, temporarily continuing with the Main Semeail.

:
Black has to connect.

:
White connects her single stone in the right centre.

:
The kikashi of Michael Redmond in the bamboo joint comes too late here.

:
White answers with the atari (as usual with the Guzumi Exchange played).

:
Black captures the ko at the upper edge.

:
White continues with the Main Semeai.

:
Black occupies a liberty of White's group at the left.

Alternatively, he might consider connecting with at the upper edge, but which will not affect the outcome of the game.

...

:
White increases the Punishment Semeai Liberty Level by one.

:
Black connects the ko in the upper left corner, so losing a tempo in the Main Semeai.

:
White continues with occupying liberties.

:
Black must connect the hanezeki's tail now.

Otherwise, if he played the atari of in the nakade at the left, White would capture the tail herself, and win the Punishment Semeai thereafter.

:
White has to play oki to keep Black's bottom group at only one eye.

...

...

:
White captures Black's three stones in the lower right.

:
Black has to capture White's stones at the left, as his bottom group has only two liberties left.

:
White lives in the lower right corner, also killing Black's remaining group above in the earlier hanezeki.

White wins the game by over 35 points.

Copyright © 2021 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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