:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

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

(.3)

: ( 222fc)
White peeps at the upper edge.

:
Black wants to fight a semeai with White's centre group.

As a matter of course, it would be better to connect at , achieving the same final score as in the previous subvariation (White + 7).

:
White prevents a Black eye in the centre.

:
Black attacks White's eye shape at the top.

:
Black's throw-in is sente.

:
Black prevents a White connection at this point.

:
White is forced to connect.

:
Black creates a ko shape.

:
White's descent to the upper edge generates another ko shape. As usual with this kind of semeai, this double-ko favours White.

:
We insert Black's kikashi in the hanezeki, to keep the presentation easily comparable.

:
Sooner or later, Black will have to connect this ko.

:
White occupies one of her false eyes.

:
White's second false eye is gone.

Black's large group has seven liberties, but six of these () are shared with White's centre group. This implies that Black does not have any chance to win this semeai.

White will win the game by a very large margin.

Copyright © 2021 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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