[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [gnugo-devel] Joseki constraint question
|
From: |
Gunnar Farneback |
|
Subject: |
Re: [gnugo-devel] Joseki constraint question |
|
Date: |
Sat, 29 Mar 2003 22:57:16 +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) |
Evan wrote:
> Pattern JH488
>
> -------+
> .......|
> .......|
> .......|
> ...O...|
> ..*X...|
> ...OX..|
> .......|
> .......|
> .......|
>
> :8,sFJ
>
> -------+
> .......|
> .......|
> .......|
> ...OB..|
> ..*XA..|
> ...CX..|
> .......|
> .......|
> .......|
>
> ;!oplay_attack(A,*,B,C)
>
> It looks to me like it's checking the wrong thing; should there be some
> other constraint there?
The constraint should be reversed. O wants to cut at A but has to
block on top if black can catch a stone in a ladder in this position:
-------+
.......|
.......|
.......|
...OO..|
..XXO..|
...OX..|
.......|
.......|
Well spotted.
/Gunnar