:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

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

: ( 222ij)
White pushes at the left edge.

:
Black blocks, as a matter of course.

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

She might also wait with initiating the ensuing sequence there until later in the game.


( A 222im)
White's "peaceful" connection in the right centre is a mistake here.

She must attack in the upper left corner, instead, by jumping to , is she wants to win the game.

:
Black starts the reduction of White's territory at the top.

:
White cut in the corner comes too late now.

Black plays 4/4 reductions.

Capture Variation:

Compared to the superordinate variation ...

  • White's cumulated gain in the upper left corner is one point.
  • At the top, one point of White's territory changed place, so the net effect is zero.
  • Black destroyed one point of White's territory in the upper right corner.

In total, gains and losses compensate for each other.

Jigo => Jigo

Semeai Variation:

Compared to the superordinate variation ...

  • White's cumulated gain in the upper left corner is one point.
  • At the top, one point of White's territory changed place, so the net effect is zero.
  • Black captured one White stone more at the left edge, so gaining two points.
  • White captured one Black stone more in the upper right corner, so gaining one point.

In total, gains and losses compensate for each other.

Black + 3 => Black + 3

Copyright © 2021 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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