GokyoSeimyoVolume3Problem27/Attempts

[Diagram]

Ko


B3 above is a mistake.

[Diagram]

Ko or seki

B1 forces W2, then B3 prevents independent life. Later one player or other plays at a, for ko or seki.


[Diagram]

Seki

[Diagram]

Other W2 (a gote seki, otherwise Black can start a ko there)


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