Xuanxuan Qijing Problem 239 / Solution

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Solution

After W1!, the best Black can get is a one-move approach ko.

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Black's Resistance

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Cont. 1

W5 is the move that links the black stones together to create connect and die situation.

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Cont. 2

W7 is important. Black needs another move at a to make it a direct ko. See Failure below for what happens when W7 is at B8.

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Failure

B8 is an unexpected good move.

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Cont.

After B12 recaptures, the white group dies.


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