GokyoShumyoSection1Problem101/Attempts

[Diagram]

Attempt

Yohei: Looks like B1 is the vital point. If the liberty at the marked point was filled, then instead of W4 white could play W6, black B7, white B5.

[Diagram]

Variation

[Diagram]

Failure?

Not sure whether B1 here is considered correct. Up to W10 black is locally dead, but he can escape to the right. In any case, the first diagram is clearly better since black is alive with points. If white cannot permit black to escape in this diagram, then white can make sente seki with W6 at W10 and B7 at W6.


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