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Re: [gnugo-devel] trevor_1_14.5
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From: |
Gunnar Farneback |
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Subject: |
Re: [gnugo-devel] trevor_1_14.5 |
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Date: |
Sat, 17 Nov 2001 16:46:37 +0100 |
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User-agent: |
EMH/1.14.1 SEMI/1.14.3 (Ushinoya) FLIM/1.14.2 (Yagi-Nishiguchi) APEL/10.3 Emacs/20.7 (sparc-sun-solaris2.7) (with unibyte mode) |
Dan wrote:
> > In any case I can propose one simple change to make the pattern more
> > specific. We can replace the n classification with the constraint
> >
> > > ?.*Ox connect
> > > ..OXX
> > > ..a..
> > > .....
> > > -----
> >
> > oplay_attack(a,*,*)
>
> This would rule out the pattern in many cases where escape
> into the center is threatened. For example, if it looks like this:
Um, yes, I seem to have forgotten to negate the constraint.
> ........
> ........
> ...O..OO
> ..OXXXXO
> ........
> ........
> --------
>
> The solid connection is more likely to prevent escape.
Then we maybe should have a pattern with sufficient context to see
that escape is a problem. At the very least we could check whether the
O stone on the fourth line in the pattern has lots of liberties.
/Gunnar