:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

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

(.2)

: ( 222ds)
Black jumps into the corner at the second line, intending to connect along the edges of the board.

:
White captures at the upper edge.

; :
Black defends twice in the corner.

:
White gives atari at Black's two stones at the top.

:
White's previous move was gote, so Black is able to defend his territory in the lower left corner.

:
White's push at the left edge is important, reducing Black's corner territory a bit.

:
White defends her weakness in the guzumi area.

:
Black gives atari at White's four stones, forcing White to capture at the top.

:
Black captures White's two stones in the lower left.

:
White starts the reduction of Black's territory in the left centre with playing this wedge.

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

:
Black's connection simplifies the issue.

He would not affect the final score of the game, if he did without this move.

:
White continues with the Main Semeai.

:
In principle, Black played 1/1 reduction.

After White's decision point, Black is forced to play a protective move in the upper left corner, e.g. at , latest after his outside liberties have have gone.

If he did without, White would cut there, killing the entire corner.

Capture Variation:

Compared to the superordinate variation ...

  • Black got an additional eight points of territory in the upper left corner.
  • White got an additional 13 points of territory at the top
  • Black got an additional three points of territory in the lower left corner.

In total, White gained two points.

White + 11 => White + 13

Copyright © 2021 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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