:: Igo Hatsuyôron 120 (2015)

Joachim's Ko-Semeai - Putting the Cart

Before the Horse (2013 - 2015)

Filling-in White's False Eyes in the Centre

: ( 967)
Even if White fills-in her false eyes before capturing the ko for the first time, the ko-fight will last longer than necessary.

White still has six liberties (3 * w, 3 * c), but Black's group has eight liberties now (3 * c, 4 * b, k), two less than before.


Ko: ;

:
Black's group in the upper right is above the Punishment Semeai Liberty Level, so Black's forcing move in the nakade is a valid ko-threat.

:
But Black must connect the hanezeki's tail now.


Ko: ; ; ;

:
As before, Black needed an external ko-threat to win.

:
Black will win the game by giving atari at .

With Black's larger eye in the centre, White's filling-in of her false eyes does not have an effect on the outcome.

Copyright © 2016 Thomas Redecker.

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