life
A single stone or group of stones is alive if it cannot be captured, or if, when captured, the capturing stones are themselves liable to recapture, thus reestablishing ownership of the territory. A group is alive if it owns two or more eyes, or if it is in the position of being able to make two eyes, or if it is in seki with an opponent group. In the diagram all the stones except those marked with crosses are alive. The marked stones are dead because, assuming alternate turns, they cannot make life. |
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