:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

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

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

:
Black gives atari from the outside.

:
White plays KataGo's bad-shape move in the left centre.

:
White's previous move is gote locally, so Black takes the opportunity to occupy the large endgame point at the upper edge.

:
In order to simplify the presentation, we let White capture the nakade just now.

:
Black occupies White's upper liberties first.

:
White plays atari at Black's stones above.

:
White establishes some additional points of territory in the centre, but loses one tempo in the Main Semeai.

:
Therefore, Black is able to push once at the upper edge, taking profit outside the Main Semeai area.

Black must not play any reduction.

After her decision point White will block at .

Capture Variation:

Compared to the superordinate variation ...

  • Black got an additional two points of territory in the upper left corner.
  • Black destroyed one point of White's territory at the upper edge.
  • White destroyed three points of Black's territory in the left centre.
  • Black captured an additional White stone there.
  • White got an additional two points of territory in the centre.

In total, White gained one point.

White + 7 => White + 8

Semeai Variation:

Compared to the superordinate variation ...

  • Black got an additional two points of territory in the upper left corner.
  • Black destroyed one point of White's territory at the upper edge.
  • White destroyed three points of Black's territory in the left centre.
  • Black captured an additional White stone there.
  • White got an additional two points of territory in the centre.
  • Black captured one White stone more at the left, so gaining two points.

In total, White lost one point.

Black + 4 => Black + 5

Copyright © 2021 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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