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Subject: Re: Example win vs. crafty

Author: Gian-Carlo Pascutto

Date: 09:28:17 06/27/01

Go up one level in this thread


On June 26, 2001 at 14:09:31, Robert Hyatt wrote:

>On June 26, 2001 at 04:05:03, Gian-Carlo Pascutto wrote:
>
>>On June 26, 2001 at 01:40:53, Uri Blass wrote:
>>
>>>What is the name of the program you played against?
>>
>>This was crafty.
>
>I can't get crafty to ever think about Qf7 for black here...  It only
>considers fxg5.

Here crafty finds Qf7 at depth 8 and keeps it for some time during
depth 9. It switches to Bd7, which also allows g6.

depth=9 -4.20 16. ... Qf7 17. gxf6 Qxf6 18. Be1 Ra7 19. Bg3 Bc7 20. Bxc7 Rxc7
21. Qg6 Qh4

>Any idea what is going wrong here???

The score difference between fxg5 and Qf7 is quite small. I was
_not_ playing at 120/40 timecontrols. At longer time controls
crafty will find fxg5.

>I am not quite following this.  This game was played by you against another
>program (not crafty)?  I don't see how crafty could improve on it if it has to
>follow the game in analysis mode, since it can disagree, but it still is forced
>to follow the moves played in the game.  IE the Qf7 move I can't get it to play
>under any conditions...  black was totally won at that point.

No. I reached the starting _position_ vs another program. I then set up
this position in WinBoard, fired up crafty in analysis mode and played
the moves it seemed to like.

I used analysis mode rather than normal play because I wanted to see
the lines and eval it was thinking about. That display is better in
analysis mode rather than normal play.

--
GCP



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