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Unsettled three
Difficulty: Beginner
Keywords: Life & Death
When a group only has three interior spaces in a row for eyes, it is unsettled.
In both cases in the diagram, if White plays at the marked point she'll live. If Black plays there, White will die.
Here, if White doesn't capture at the marked point, she'll die next turn.
But if she captures with
Here White is already dead.
The presence of cutting points or other weaknesses can be used to reduce a four-space big eye to a three-space and hence dead shape.
Obviously, White shouldn't even respond to Other and larger, perhaps seemingly live eye spaces can be reduced because of the presence of weaknesses. See nakade for an example of such a (very) large eye space which at the end only gives one eye. This is a copy of the living page "Unsettled three" at Sensei's Library. ![]() |