Gokyo Shumyo, Section 4, Problem 7 / Solution

[Diagram]

Black to win the capturing race

Solution

[Diagram]

Variation for White W2 at B7

Variation 1

[Diagram]

Variation for White W2 at B5

Variation 2


[Diagram]

Potential ko

Warning: White may set up a ko this way. If it is possible for B5 to be played at B9, it becomes a one-move approach ko.


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