Re: [computer-go] What is the eye?

[Tapani Raiko <praiko@xxxxxxxxx>]

> What is eye? and How do you define it?

It could be defined as "sufficiently small" region completely surrounded
by a single string of stones (and the edge of the board). In a strict
sense, sufficiently small means that a black eye can contain only white
stones and all the empty points inside must be liberties for black. In a
loose sense, white should not be able to fit a living group inside.

Instead of trying to define an eye and requiring a group to have two of
them to live, I recommend Benson's algorithm instead:
http://www.cs.ualberta.ca/~games/go/seminar/notes/020717/benson.pdf
Definition of a single eye might still be useful in semeai and so on.

--
 Tapani Raiko, <tapani.raiko@xxxxxxxxxxxxxxxxx>, +358 50 5225750,
 http://www.hut.fi/u/praiko/


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