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Two Eyes
  Difficulty: Beginner   Keywords: Life & Death

One of the first things a beginner learns is that a group of stones must have, or must be able to make, two eyes in order to live.


[Diagram]
Diag.: Minimal group with 2 'eyes'

This follows from the basic rules of Go, which state that when a group's last liberty is removed, the group dies (is removed from the board).

It follows that a group which has at least two liberties which cannot be removed, the group cannot be killed and is alive.

Note that sometimes an 'eye' may have two points in it, but that does not make the group alive. Look at nakade for examples of this.

See also:

--MortenPahle (10k)



This is a copy of the living page "Two Eyes" at Sensei's Library.
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