OneThousandAndOneLifeAndDeathProblems/Erratum 11

[Diagram]

Problem 92

Marc: Black to live. The book gives 1 as the correct answer. However, if black plays a instead of 1 the group is still alive plus black saves the stone below a.

[Diagram]

Continuation

Shaydwyrm: A play at B1 allows white to play at W2, creating a direct ko as shown below.

[Diagram]

Direct Ko

Shaydwyrm: White throws in a stone at W1 to create a shortage of liberties. Now black has to capture at B2 and a direct ko commences.


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