:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

VAR (C) (A) (.1)

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

:
Black answers by pushing into White's weakness in the upper right corner.

:
White simply connects.

It does not make sense for her to start a ko fight by blocking with , instead.

:
In order to simplify the presentation, we let Black occupy White's uppert liberties first.

:
White gives atari at Black's stones above.

:
White secures two points of territory in the left centre.

She might also hane at , instead. She will achieve the same final scores after Black destroyed her potential territory in the centre, starting with .

:
White ended in gote in the centre, so Black is able to take territory at the upper edge in return.

Black must not play any reduction.

After her decision point, White will block at at the upper edge.

Capture Variation:

Compared to the superordinate variation ...

  • Black got an additional two points of territory in the upper left corner.
  • Black destroyed three points of White's territory in the upper right corner.
  • White destroyed two points of Black's territory in the left centre.
  • White got an additional two points of territory there.
  • White got an additional point of territory in the right centre.

In total, gains and losses compensate for each other.

White + 6 => White + 6

Semeai Variation:

Compared to the superordinate variation ...

  • Black got an additional two points of territory in the upper left corner.
  • Black destroyed three points of White's territory in the upper right corner.
  • White destroyed two points of Black's territory in the left centre.
  • White got an additional two points of territory there.
  • White captured two Black stones more in the upper right, so gaining four points.

In total, White gained three points.

Jigo => White + 3

Copyright © 2021 Thomas Redecker.

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