Kanazawa Problem 50 / Solution

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Continuation

White cannot protect at a because of shortage of liberties and Black will make two eyes.


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Some more about the position

Black's formation is a carpenter's square. The vital point of this shape is the marked point (2-2 point?). If White plays there instead of at the marked stone, the position becomes ko.


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This is a copy of the living page "Kanazawa Problem 50 / Solution" at Sensei's Library.
(OC) 2007 the Authors, published under the OpenContent License V1.0.
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