:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (Ib)

KataGo's 2021 Solution

VAR (.3) (.3)

: ( 58cx)
Black defends his potential territory in the left centre.

:
White plays her remaining kikashi in the left centre, ...

:
... at the left edge, ...

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... and at the bottom.

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White's hane at the upper edge is the last valuable point outside the Main Semeai area.

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Black has to add a defensive move in the corner before approaching White's left-hand group at .

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The Main Semeai continues.

Black plays 2/2 reduction.

Before the end of the game, Black will have to connect at .

Capture Variation:

Compared to the superordinate variation, ...

  • Black lost one point of territory in the upper left corner.
  • White destroyed one point of Black's territory at the upper edge.
  • Black got one point of territory in the left centre.
  • White did not capture Black's stone in the lower right, so losing two points.

In total, Black gained one point.

White + 2 => White + 1

Semeai Variation:

Compared to the superordinate variation, ...

  • Black lost one point of territory in the upper left corner.
  • White destroyed one point of Black's territory at the upper edge.
  • Black got one point of territory in the left centre.
  • Black captured one White stone less in the left centre, so losing two points.
  • White captured one Black stone more in the lower right, so gaining two points.

In total, Black lost five points.

Black + 8 => Black + 3

Copyright © 2021 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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