:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

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

(Referenced by 222br)


: ( 222ev)
Black continues following the order of moves that had been shown to us by Yamada Shinji.

:
White cuts in the corner, as usual.

: (A 222fc)
Black, however, must give atari from the inside here.

Giving atari at White's two stones with a move at , instead, will end in a disaster for Black, with the lower border of his corner still being open.

:
White gives atari at the upper edge.

:
Another atari by White.

:
White plays another atari at the top.

:
This time, however, Black is able to play tenuki. He secures his territory in the lower left corner.

:
White captures Black's two stones at the top.

:
Black has to block.


:
White continues with the wedge in the left centre.

:
This is KataGo's bad-shape move.

:
Black is par with the Punishment Semeai Liberty Level, so he has to defend this cutting point - sooner or later.

:
White connects her single stone at the upper edge.

She could also delay this move until after her decision point.

:
Black captures another White stone in return.

Black must not play any reduction.

Capture Variation:

Compared to the superordinate variation ...

  • White's cumulated gain in the upper left is four points.
  • Black gained an additional three points of territory in the lower left corner.

In total, White gained one point.

White + 3 => White + 4

Semeai Variation:

Compared to the superordinate variation ...

  • White's cumulated gain in the upper left is four points.
  • Black gained an additional three points of territory in the lower left corner.

In total, White gained one point.

Black + 2 => Black + 1

Copyright © 2021 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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