XuanxuanQijingProblem150/Solution

[Diagram]
Original Solution  
[Diagram]
Original Solution (continued)  

B3 threatens a ladder from Black a. If W4 escapes, the lower group is killed. However...

[Diagram]
Refutation  

W1!! was found in Japan (attributed to Dosaku). This prevents both Black threats.

[Diagram]
Black's best - ko  

Black can play hane at B2 and make ko.

[Diagram]
Black's best - ko (continued)  

XuanxuanQijingProblem150/Solution last edited by hnishy on May 29, 2024 - 02:09
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