:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

VAR (C) (A) (.1)

: ( 222kb)
White plays the wedge in the left centre.

:
Black has to give atari from the outside.

:
White's atari is sente.

: (A 222kq ; B 222kr ; C 222kt)
White continues with the Main Semeai by giving atari at Black's hasami-tsuke stone.

Alternatively, she can also start with erasing her weakness in the upper right by taking Black's lilberty at .

Immediately starting the endgame in the left corner with a move at , instead, is also possible here. It will result a change in the order of moves with one of the correct lines here.

However, playing KataGo's bad-shape move just now is not advisable. This move is gote locally, and Black will be able to overcompensate for his loss in the left centre in another part of the board.

:
White continues with the endgame in the lower left corner.

Alternatively, she might consider playing at first, taking one of Black's liberties at the right. Black will answer with in the left centre again.

: (128 222ku)
White defends her weakness in the upper right in sente.

Immediately connecting at , instead, is also possible here, not affecting the final scores of the game.

Black must not play any reduction.

After her decision point, White will play the hane of at the upper edge, and connect at thereafter.
In the Capture Variation, Black will occupy the point of in the right centre.
In the upper left, he must connect at before the end of the game.

Capture Variation:

Compared to the superordinate variation ...

  • White destroyed one point of Black's territory in the left centre.
  • Black captured an additional White stone there, so gaining one point.

In total, gains and losses compensate for each other.

White + 6 => White + 6

Semeai Variation:

Compared to the superordinate variation ...

  • White destroyed one point of Black's territory in the left centre.
  • Black captured an additional White stone there, so gaining one point.

In total, gains and losses compensate for each other.

Jigo => Jigo

Copyright © 2021 Thomas Redecker.

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