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BigEyeLiberties

 

Big Eye liberties example 3
    Keywords: Tactics

[Diagram]
6=12

An internal eye of six points is worth twelve liberties in a semeai. However, in a six-point big eye which is dead, black has already got a stone in it, so this reduces the actual liberties to 11.


[Diagram]
6=12 continued

It may look like White cannot win since Black has 11 outside liberties, but the six-point big eye gives White 11 liberties as well. So if White has sente...


[Diagram]
6=12 continued again

[Diagram]
6=12 (diagram 4)

[Diagram]
6=12 (diagram 5)

And Black is captured.





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