:: Igo Hatsuyôron 120 (2020)

Variations of Our Solution (IIIa)

No Early Kikashi

VAR (.1) (.4)

: ( 648cx)
White prevents Black's kikashi in the hanezeki.
Please remember that this move is gote locally.

:
Black connects Dany's Ko.

:
White's connection at the upper edge is the largest move now. Please remember that it loses one tempo in the Main Semeai.

Usually, White would play her kikashi in the hanezeki, in order to prevent a Black atari at there. Here, in this subvariation, however, she will lose the Semeai Variation anyway; therefore, it does not make sense to sacrifice one point in the Capture Variation for gaining one point in the Semeai Variation.

:
Black plays his remaining kikashi at the top.

:
The Main Semeai continues.

Black plays 0/3 reductions.

White will start the Semeai Variation by playing her kikashi at in the hanezeki.

Capture Variation:

Compared to the superordinate variation ...

  • White's cumulated gain at the upper edge is two points.
  • Black gained one additional point of territory in the left centre.
  • Black captures an additional White stone there.
  • Black's cumulated gain in the lower left corner is two points.
  • Black did not destroy one point of White's territory in the upper right corner,
  • White captured Black's single stone in the lower right, so gaining two points.

In total, gains and losses compensate for each other.

White + 1 => White + 1

Semeai Variation:

At White's decision point, Black's large group in the upper right will have ten liberties, eight direct liberties (), and two approach-move liberties (), so White will be unable to capture it.

Black will win the game by a large margin.

Copyright © 2020 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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