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CriticalNotchers

 

214NN notcher
    Keywords: Life & Death

[Diagram]
214NN: alive

This is a critical notcher. Black lives, but anything weaker than this shape is unsettled. There is no interesting White attack to refute here, so let's rather have a look at a shape only slightly weaker: the 214NW notcher.



This is a copy of the living page "214NN notcher" at Sensei's Library.
(OC) 2004 the Authors, published under the OpenContent License V1.0.