:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

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

: ( 222bv)
Black jumps into the corner at the second line.

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

:
Black connects along the edge of the board.

:
White captures Black's two stones.

:
White's previous move lost one tempo in the Main Semeai, so Black is able to occupy the large endgame point at the lower edge.

:
White's push at the left edge is important, it weakens Black's shape in the corner decisively.

:
White continues with the Main Semeai for a few moves.

:
White plays the wedge in the left centre.

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

:
Black inserts this cut as a kikashi.

:
KataGo likes to play this move.

Alternatively, Black might consider connecting at immediately. The final score of the game would not be affected.

:
Again, White ends in gote.

; :
In principle, Black plays 2/2 reductions.

Before the end of the game, Black will have to add a protective move in the upper left corner.
Otherwise - with all outside liberties occupied - the sequence of , , will kill all his stones there.

Capture Variation:

Compared to the super²ordinate variation ...

  • White's cumulated gain in the upper left corner, and at the top, is 17 points.
  • White's cumulated gain in the left centre is one point.
  • Black's cumulated gain in the lower left corner is five points.

In total, White gained 13 points.

Jigo => White + 13

Copyright © 2021 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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