:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

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

(.2)

: ( 222bv)
White connects her single stone in the right centre, also continuing with the Main Semeai.

:
Black's push at the top is sente.

:
White blocks immediately.

She might also take a liberty of Black's large group at the right, instead, e.g. with .

:
Black descends to the left edge, also closing his corner.

:
White plays the hane at the left edge.

:
Black's descent to the upper edge immobilises White's stones in the upper left corner.

:
White defends his weakness in the guzumi area.

White might consider playing the wedge of , instead, in order to destroy some points of Black's territory there.
However, she would end in gote, so Black would be able to destroy the same amount of White's territory in the upper right by pushing at . These two areas are miai.

:
Black protects his territory in the left centre.

:
White continues with the Main Semeai.

:
White will start the endgame "late", after her decision point, to not give Black any chances.

Please remember that Black must not play any reduction.

Capture Variation:

Compared to the super²ordinate variation ...

  • White's cumulated gain in the upper left corner is 17 points.
  • Black's cumulated gain at the top is ten points.
  • White did not capture Black's single stone in the lower left corner, so losing two points.

In total, White gained five points.

Jigo => White + 5

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