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BigQuestionMark

 

Big Question Mark Problem 4
   

[Diagram]
Diag.: Can black live?

White to play next. Can black live in the corner?



HolIgor: My answer is yes. Or have a considerable profit. Black is a ko-master here. Of course, seki is equal to life, too.


[Diagram]
Diag.: One of the variations

[Diagram]
Diag.: Continuation

[Diagram]
Diag.: White has an single ko threat.

I think that black should be satisfied with the furikawari.

I don't know if this is the best solution for both black and white but it seems that white has big problems.



[Diagram]
Diag.: Another variation

[Diagram]
Diag.: Seki


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