214NN notcher
Keywords: Life & Death
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.
![[Diagram]](../../diagrams/18/36a4be77ffbbbcacfc46f1a0f6a502e5.png)
2024 the Authors,
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