RTG Problem 62 / Solution

Sub-page of RTGProblem62

The status is: If White first, White lives unconditionally. If Black first, Black kills unconditionally.

The first part is trivial. Now to show the second part.


This problem can be solved using pattern recognition. The top edge has six stones on the second line, and the shape nearest to the center has only half an eye. To prevent White from making two eyes, B1 is necessary to stop White from expanding his eye space. After B1, a and b are miai. Perhaps some readers have a deja vu feeling...


This is an example sequence. White is left with only one eye at the top edge, and B5 destroys the other eye.

RTG Problem 62 / Solution last edited by Unkx80 on October 6, 2009 - 08:39
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