:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

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

(.2)

: ( 222im)
Black attaches at White's just played stone in the corner.

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Please note that this jump-attachment is favoured by KataGo (2020), only after all open spots on the board have been played out.

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:
White tries to spoil Black's shape and to create a ko shape in the corner.

; :
These two moves are miai, so there will be no ko fight in the corner.

:
White connects her single stone in the right centre.

:
Black has to play this atari in his upper left corner, in order to eventually frustrate White's hope for a ko fight.

Black plays 3/3 reductions.

Capture Variation:

Compared to the superordinate variation ...

  • The cumulated effect of White's action in the upper left corner is zero points.
  • At the top, one point of White's territory changed place, so the net effect is zero.

In total, gains and losses compensate for each other.

White + 2 => White + 2

Semeai Variation:

Compared to the superordinate variation ...

  • The cumulated effect of White's action in the upper left corner is zero points.
  • At the top, one point of White's territory changed place, so the net effect is zero.

In total, gains and losses compensate for each other.

Black + 3 => Black + 3

Copyright © 2021 Thomas Redecker.

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