GokyoShumyoSection4Problem18/Attempts

[Diagram]

Attempt 1 (failure)

If B1 - W2 - B3, then White achieves a ko as in the solution of Section 4 Problem 15 of this series.


[Diagram]

Attempt 2

What if Black extends to the 1-2 point?

[Diagram]

Attempt 2 (variation 1)

Black wins this way.

[Diagram]

Attempt 2 (variation 2)

Also, Black wins this way.


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