Author: Robert Hyatt
Date: 05:56:58 06/01/98
Go up one level in this thread
On June 01, 1998 at 03:07:21, Komputer Korner wrote: >On June 01, 1998 at 02:42:40, Komputer Korner wrote: > >>I have done about 80 games of Crafty 15 vs Comet A90 >> and Comet is stronger at 10 2 on a Pentium 166Mhz. If I had a faster >>computer then Crafty would do better, and I am still having problems >>with uninterrupted matches because if Crafty resigns or if there is a >>perpetual the match will hang. Also Sometimes Comet will not start a >>match. It refuses to make the first move of a match sometimes. I have to >>click the match icon shortcut again. I have now included the beep >>initstring to see if this makes a difference with the match hangs. It >>hasn't solved the occaisonal Comet refusal to start a match however. >>-- >>Komputer Korner >> >>The following was done by Tracy Miller and posted in the r.g.c.c. >>"I have now completed five 5 0 matches with various programs against >>Comet using Tim Mann's wonderful new Winboard 3.6.9beta. Each match was >>30 games. Here are the results: >>EXChess 4.0 Comet 26.0 >>GnuChess 7.5 Comet 22.5 >>Tristram 1.5 Comet 28.5 >>Arasan 1.5 Comet 28.5 >>Crazy Bishop 21.5 Comet 8.5 >> >>I finally found a program that seems to be better than Comet at blitz. >>Check out Crazy Bishop's wonderful performance! I tried hard to make >>conditions equal for these programs. I made sure the hash tables were >>equivalent, wherever possible. The only thing I couldn't figure out how >>to do was tell which programs were pondering (thinking on opponents' >>time). " > >My Comet- Crafty matches are still crashing with pondering on. No one >knows why. >I will go back to taking the pondering off. P.S. I just went back to >pondering off. it sure speeds up the opening play. No crashes yet but >too early to tell. Another question to Bob Hyatt? will Crafty learn >actual new moves in it's opening book? Will it add new moves based on >previous good results? If so are these limited to the 65,000 position >learning limit that you implemented and if so why a limit at all? it doesn't "add" to its book. I don't trust such, because adding a blitz line can be a way to add a losing line. The "65536 limit" is on position learning, which has *nothing* to do with the book. These are simply positions where the eval dropped significantly, and prevent someone from taking crafty out of book on move 1 or 2 or so, where it can't learn anything about the opening, yet it still won't repeat losing moves over and over. Also, you reported that comet was doing better than Crafty at blitz games. Could you send me some of the log files? IE I'd like to check to be sure that it is losing games that are getting recorded as losses, that CPU usage is balanced, etc. On ICC, we have several comets and crafty's running, and I haven't seen any overwhelming losses yet. Comet plays well, but seems to get into dire difficulties in the endgame. IE on ICC last night we had a 5 game match at 3 0, crafty won 4 drew 1. The day before crafty won 2, lost 1. So really bad results might say something is wrong in your configuration, as in comet is pondering while crafty does, or whatever, or the games are getting recorded as a wrong result due to a bug in either program telling winboard the wrong game outcome...
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