Xuanxuan Qijing Problem 138 / Solution



Solution

XuanxuanQijingProblem138/Solution#toc3 XuanxuanQijingProblem138/Solution#toc2 XuanxuanQijingProblem138/Solution#toc4
[Diagram]

Solution

B1 kills.

Since Black has c to cut or x to reduce White's space tramendously,

only W2 at a or b will be considered.

c is mentioned here because bent four in the corner might worth something under some circumstances and rule sets.


Resistance 'a'

[Diagram]

This exchange doesn't achieve much; the rest would be similar to the other two resisting attempts.

Resistance 'b'

[Diagram]

Black has x or y next.

Resistance 'c'

[Diagram]

After B3, White doesn't have enough space.




Failure

[Diagram]

[Diagram]

Ko.

[Diagram]

For any other B1, the group is alive after W2.


This is a copy of the living page "Xuanxuan Qijing Problem 138 / Solution" at Sensei's Library.
(OC) 2016 the Authors, published under the OpenContent License V1.0.
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