Endgame Problem 15 / Solution

Sub-page of EndgameProblem15
W to play, no komi, one W stone captured at c5  

W1 lives. Then B2 prevents a White threat to live in the top left corner (next diagram). Then W3 prevents a Black point on the right side.

Result: Jigo.

Threat to live  

W1 threatens to make life in the top left corner. B2 prevents that, but then W3 gains points in the top right corner.

Alternative play  

After B2, W3 threatens to capture the Black stones in the corner, as does W5. B6 preserves seki. Then W7 prevents a Black point.


Because of shortage of liberties W1 fails. B2 kills the top right corner. White can live in the top left, but Black wins big.

Endgame Problem 15 / Solution last edited by Bill on October 14, 2009 - 15:09
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