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BigQuestionMark

 

Big Question Mark Problem 4
    Keywords: Question

[Diagram]
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]
One of the variations

[Diagram]
Continuation

[Diagram]
White has a single ko threat

I think that Black should be satisfied with the exchange.

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



[Diagram]
Another variation

[Diagram]
Seki


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(OC) 2003 the Authors, published under the OpenContent License V1.0.