[Computer-go] living by two false eyes

Brian Sheppard sheppardco at aol.com
Wed Apr 6 07:33:20 PDT 2011

The Benson algorithm is used to detect unconditional life. It should
identify these strings as alive, which is good. I think that most of the
problem with the two false eyes is that their owner might incorrectly fill
one of them before reaching a late game stage, so perhaps that does not
solve the problem.


Can you tell me how the Benson algorithm is used in StoneGrid?





From: computer-go-bounces at dvandva.org
[mailto:computer-go-bounces at dvandva.org] On Behalf Of fastgo
Sent: Wednesday, April 06, 2011 10:11 AM
To: Aja; computer-go at dvandva.org
Subject: Re: [Computer-go] living by two false eyes


In StoneGrid, it has built in the Benson algorithm in the playout. It does
not seem to help much on overall strength. But I think it should solve the
case here.

I think you can implement the Benson Algorithm in the late stage of the

It has another advantage finishing the playout in shorter length. In
StoneGrid, the playout on average finishes in a little bit more than 70
stones on 9x9. 

You need quite a lot of effort to get it fast as well as correct. So the
return of the effort is low. 

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