:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

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

(Referenced by 222gq)


: ( 222ha)
White keeps the game simple by capturing Black's single stone at the top.

:
Black further protects his corner territory, ...

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... while White captures another two Black stones at the outside.

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White's previous move was gote, so Black takes the large endgame point at the lower edge.

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White continues with the endgame at the upper edge by playing this atari, which Black must not connect.

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Black plays this kikashi first.

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Thereafter, he defends his corner.

:
White captures Black's single stone at the upper edge.

:
Black blocks.

Alternatively, he could also capture White's single stone in the right centre with .
The scores of both Main Variations would be interchanged, so the overall result of the game would not be affected.

:
White connects in the right centre, so continuing with the Main Semeai.

:
No large endgame point is remaining on the board, so White connects her two stones.

Black plays 2/2 reductions.

Capture Variation:

Compared to the super³ordinate variation ...

  • Black's cumulated loss in the upper left corner is three points.
  • Black destroyed two points of White's territory at the top.
  • Black got an additional point of territory in the left centre.
  • Black's cumulated loss at the right is four points.

In total, White gained four points.

White + 3 => White + 7

Semeai Variation:

Compared to the super²ordinate variation ...

  • Black's cumulated loss in the upper left corner is three points.
  • Black destroyed two points of White's territory at the top.
  • Black got an additional point of territory in the left centre.
  • Black's cumulated gain at the right is two points.

In total, White gained two points.

White + 3 => White + 5

Copyright © 2021 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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