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Re: [gnugo-devel] Terrible move
From: |
Gunnar Farneback |
Subject: |
Re: [gnugo-devel] Terrible move |
Date: |
Wed, 21 Nov 2001 18:06:40 +0100 |
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) |
Allan wrote:
> Here's a game where GNU Go makes a fairly catastrophic move at move 216.
> The odd thing is that if asked to generate a black move instead it sees
> that it can kill...
To GNU Go the upper right corner is a semeai situation and the semeai
module isn't good enough to handle it. Dan, this is a good test case
for an improved semeai module.
Trevor wrote:
> Here's a curious position, derived from your submission:
>
> $ gq -l c:\\y.sgf --decide-dragon S15 -o x.sgf
> finished examine_position
> S15 cannot be attacked (8 variations)
> S15 cannot be defended (2 variations)
>
> In other words, if black plays first White's alive. If white plays
> first, he's dead. Yikes.
This is an unfortunate effect of some complex interactions between the
tactical reading, the owl reading, and the eyespace analysis.
/Gunnar