XuanxuanQijingProblem37/Solution

[Diagram]

Attempt

This sequence may be the first try.

[Diagram]

Attempt failed

White have succeeded in destroying an eye of Black, but lost in capturing race. White needs some tricks to reduce Black's liberties.

[Diagram]

Main line (1)

W1 and W3 sequence is to make shortage of liberties. W3 and W5 can be switched. W9! is another point.

[Diagram]

Main line (2) - ko

Black is in danger of shortage of liberties from both sides (B10 at a is met by W11 at B10). He is forced to start ko.


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