Endgame Problem 15 / Solution

Sub-page of EndgameProblem15
[Diagram]

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.

[Diagram]

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.



[Diagram]

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.



[Diagram]

Failure

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


This is a copy of the living page "Endgame Problem 15 / Solution" at Sensei's Library.
(OC) 2011 the Authors, published under the OpenContent License V1.0.
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