GokyoShumyoSection3Problem49/Solution

[Diagram]

Ko

Though there are many ways to kill the White corner, Black must win the capturing race. B1! and B5! quickly reduce White's liberties.

[Diagram]

another defense

W2 is a good defense. Black secures one eye on the left side and...

[Diagram]

Ko for Seki

...makes ko for seki with one eye each.

[Diagram]

Bad defense

W2 is wrong, losing the capturing race. (B11 at a)


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