KoPositionFromOneSpaceLowPincer/Solution

[Diagram]

Kill

Chaz: White cannot expect to ignore B1 and live. After B5, a and b are miai to kill.

[Diagram]

If white at B5, black at W4

[Diagram]

Another success

Striking immediately at the vital point of White's shape works this time, but only with careful follow-up.


Failure:

[Diagram]

Ko

Black starts a favorable ko. However, when black can kill unconditionally ko is a suboptimal result.

[Diagram]

vital point failure

Gote Seki


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