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GrabTheShapePoint...

 

SolutionToShapeProblem3
   

The problem

[Diagram]
Diag.: White first


Solution

[Diagram]
Diag.: The correct shape

The cutting point at a remains.


Bill Spight: Aside comment: Is Black 4 so great? At a looks like a bigger threat to me than 4.

[Diagram]
Diag.: Keima

How about Black 1, treating the marked stone lightly?




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