:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

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

: ( 222jg)
White plays KataGo's bad-shape move in the left centre.

:
White's previous move costs her another tempo in the Main Semeai, so Black takes the opportunity to capture White's single stone in the upper right.
Please note that this move loses only one Main Semeai Liberty, as is creates an approach-move liberty for his right group, at in the upper right corner.

:
White's push at the left edge threatens to throw-in at next.

:
Black has to strengthen his corner.

:
White's hane at the upper edge takes profit outside the Main Semeai area.

Black must not play any reduction.

Before the end of the game Black must connect at .

Capture Variation:

Compared to the superordinate variation ...

  • White destroyed one point of Black's territory in the left centre.
  • White lost one point of territory in the left centre.
  • Black did not destroy one point of White's territory in the upper right corner.
  • Black captured White's single stone in the upper right, so gaining two points.

In total, White lost one point.

White + 3 => White + 2

Semeai Variation:

Compared to the superordinate variation ...

  • White destroyed one point of Black's territory in the left centre.
  • White lost one point of territory in the upper right corner.
  • White captured one Black stone less there, so losing one point.
  • Black captured an additional White stone at the left, so gaining two points.
  • White captured an additional Black stone at the right, so gaining two points.

In total, White lost one point.

White + 3 => White + 2

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