:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

VAR (C) (A) (.2) (.1)

: ( 222me)
Black plays hane at the upper edge.

:
White captures Black's stone in the lower right corner in sente.

:
Black does not want to capture at , instead. Unnecessarily, he will lose four points in the Semeai Variation, but remain unable to increase the overall result of the game in his favour.

:
Finally, White connects her two stones that were in atari.

:
The Main Semeai continues.

Black plays 2/2 reductions.

Capture Variation:

Compared to the superordinate variation ...

  • Black's cumulated gain at the upper edge is two points.
  • Black did not capture White's two stones in the lower left, so losing four points.
  • Black did not destroy one point of White's territory in the upper right corner.
  • White did not capture Black's stone in the lower right, so losing two points.

In total, Black lost one point.

White + 4 => White + 5

Semeai Variation:

Compared to the superordinate variation ...

  • Black's cumulated gain at the upper edge is two points.
  • Black captured an additional White stone in the lower left, so gaining two points.
  • White captured one Black stone less in the upper right corner, so losing one point.
  • White captured an additional Black stone in the lower right, so gaining two points.

In total, Black gained three points.

White + 4 => White + 1

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