Gokyo Shumyo, Section 2, Problem 5 / Attempts

[Diagram]

solution?

xela: I think this does the trick.

[Diagram]

failure

xela: W1 is a mistake. After B2 and W3, black can live with either 'a' or 'b'.


[Diagram]

Food for thought

unkx80: I have not seen the solution yet, but here's some food for thought. What if B4 is sente in the sense that it threatens to escape to the side? Then if White avoids ko, Black can live. (If W9 at B10, then B10 at W9.)

How about W3 at W9?

[Diagram]

Continuation

jms: If W9 at B10 (from the previous diagram), the result is Seki - black can make Seki at any time by playing at A. If Black mistakenly plays at B, however, Black dies.


[Diagram]

Let's try again


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