[Computer-go] New Crazystone - when again?

David Fotland fotland at smart-games.com
Mon Apr 25 22:53:05 PDT 2011

Many Faces’ old engine counts liberties in semeai that way, including
approach moves, shared liberties when only one side has an eye, etc.  This
information is only used in the tree, not the playouts.




From: computer-go-bounces at dvandva.org
[mailto:computer-go-bounces at dvandva.org] On Behalf Of terry mcintyre
Sent: Monday, April 25, 2011 10:13 AM
To: computer-go at dvandva.org
Subject: Re: [Computer-go] New Crazystone - when again?



I also believe it resigned in a lost position. The mistake was S14. It
should have played J12 or M12 instead, which should lead to a win.

Rémi is correct. 

S14 is an interesting blunder. The preceding T2 move didn't exactly remove a
direct liberty from white - it allowed the O1 approach move which had
previously been a self-atari for black. This conforms to a more generalized
use of the word "liberty" used in some discussions of capturing races. 

Does Bonobot - or any program - maintain a count of "moves needed to capture
X, including approach moves and throw-ins, etc?"

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