:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

VAR (C) (A)

: ( 222jc)
White connects her single stone in the upper left corner immediately.

:
In order to defend his corner, Black is forced to give atari at White's five stones in the upper left.

: (108 222je)
White is able to ignore this atari. She occupies the guzumi point at the right.

Connecting her endangered stones at the left, instead, would be a mistake. White would unnecessarily reduce her score in the Capture Variation, despite still being one point better than in the solution.

: (108 222jk ; A 222jm ; 116 222jn ;  B 222jo)
Black follows the Main Semeai immediately here.

Black must neither capture White's five stones in the upper left with , nor destroy a potential White eye in the centre with , nor capture White's single stone in the upper right with . Each of these attempts will end in a disaster for him, as he will be unable to win a semeai with White's centre group.

However, as we now know, it would be best for Black to insert Michael Redmond's kikashi in the bamboo joint just now. He would benefit from White's five stones in the upper left corner being in atari.

:

We have reached a change in the order of moves with the previous subvariation ( 222jc).

The final scores of the game will become White + 6 / Jigo.

Copyright © 2021 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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