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BigEyeLiberties

 

Big Eye liberties example 2
    Keywords: Tactics

A capturing race with a 5 spaces big eye.

[Diagram]
5=8

An internal eye of five points is worth eight liberties in a semeai. However, in a five-point big eye which is dead, Black has already got a stone in it, so this reduces the actual liberties to 7.


[Diagram]
5=8 continued

It may look as if White cannot win since Black has seven outside liberties, but the five-point big eye gives White seven liberties as well. So if White has sente...


[Diagram]
5=8 continued again

[Diagram]
5=8 yet more

And Black is captured.





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(OC) 2004 the Authors, published under the OpenContent License V1.0.