cutting sake bottle shape

  Difficulty: Intermediate   Keywords: Shape, Variant
[Diagram]

The sake bottle shape cutting

How one can see, sake bottle shape can be cut, weak point is b-W2. But black can choose, which 2 of 3 stones to leave connected (choose 'c' or 'd' variants). Weaknesses marked as circle. Cutted stones marked as black+circle.

[Diagram]

Another cutting (ladder-breaker required)

This kind of cutting can be catched in ladder (var. g). If white have ladder-breaker on e-circle-directions, than black cutted stones may need to escape, for example f-B5.

Var. h can be reduced to var. g if instead of defence in B3 will attack in W4. Otherwise one stone can be cutted (var. h).


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