:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (Ib)

KataGo's 2021 Solution

VAR (.3) (.4)

: ( 58dc)
Black blocks at the upper edge, also giving atari at White's single stone.

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White insert a kikashi in the centre, ...

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... before continuing with the endgame in the lower left corner.

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Please remember that connecting at , instead, would be one point worse overall.

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White connects her single stone in the right centre.

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Black is able to push at the top.

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And also to capture White's single stone at the upper edge.

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After this connection, Black is par with the Punishment Semeai Liberty Level.

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White inserts her remaining kikashi in the left centre, ...

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... before continuing with the Main Semeai.

Black must not play any reduction.

Capture Variation:

Compared to the superordinate variation, ...

  • Black's cumulated gain in the upper left corner and at the top is eight points.
  • Black got an additional three points of territory in the left centre.
  • White's cumulated gain in the lower left corner is five points.
  • Black did not destroy three points of White's territory in the upper right.
  • Black did not capture White's stone in the right centre, so losing two points.
  • White captured Black's stone in the lower right, so gaining two points.

In total, Black lost one point.

White + 1 => White + 2

Semeai Variation:

Compared to the superordinate variation, ...

  • Black's cumulated gain in the upper left corner and at the top is eight points.
  • Black got an additional two points of territory in the left centre.
  • White's cumulated gain in the lower left corner is five points.
  • Black captured three White stones less in the left centre, so losing five points.
  • White captured four Black stones less at the right side of the board, so losing six points.
  • White got an additional point of territory in the upper right corner.

In total, Black gained five points.

White + 1 => Black + 4

Copyright © 2021 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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