Two hanes gain a liberty

   

A position with two hanes on the first line can have one more liberty than its dame count.

Example:

[Diagram]

An extra liberty

B1 and B3 make two hanes on the first line with sente. Now the Black stones in the corner have 4 liberties.



[Diagram]

Black wins the race

And Black wins the race to capture.



Example from [ext] http://www2.odn.ne.jp/~aaf23280/igo-6/igo-14.htm


Discussion about terminology on the /Discussion page.


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