:: Igo Hatsuyôron 120 (2020)

Variations of Our Solution (IIIa)

No Early Kikashi

VAR (.3) (.1) (.1)

: ( 648iz)
White cuts Black's group at the left side into two.

:
Black gives atari at both single stones that White just played.

:
Playing this move at , instead, does not make any sense.

:
Black secures the second eye for his upper group.

; :
White plays her usual kikashi in the lower left corner.

:
White occupies the last valuable point outside the Main Semeai area.

Black plays 3/5 reductions.

Please assume the rejection of Dany's Sacrifice and Black's second kikashi in the hanezeki (, ) played before.

Before the end of the game, Black will capture at .

Joachim's Final Ko in the Semeai Variation does not apply here; Black does not have any valid ko threat.

Capture Variation:

Compared to the superordinate variation ...

  • Black captured one White stone in the left centre, so gaining one point.
  • Black's cumulated loss in the lower left corner is two points.
  • Black destroyed one point of White's territory in the upper right corner, so gaining one point.

In total, gains and losses compensate for each other.

Jigo => Jigo

Semeai Variation:

Compared to the superordinate variation ...

  • Black captured one White stone in the left centre, so gaining one point.
  • Black's cumulated loss in the lower left corner is two points.
  • White captured an additional Black stone in the upper right corner, so gaining one point.
  • Black captured an additional White stone in the lower left corner, so gaining two points.

In total, gains and losses compensate for each other.

Jigo => Jigo

Copyright © 2020 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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