IgoHatsuyoRonProblem145/Solution

[Diagram]
Black to play  

B9! forces ko. White has two replies:

[Diagram]
a above  
[Diagram]
b above (W5 at B2)  

IgoHatsuyoRonProblem145/Solution last edited by hnishy on February 3, 2023 - 12:35
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