Author: Thorsten Czub
Date: 13:10:17 04/09/98
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>What you describe can be achieved by a "classic" minimax approach. As >far as I know, Chris Whittington did not claim he had a new search >algorithm, but he did claim that his evaluation was different. Almost anything in chris chess-engine looks weird. I am not sure if you can relate it very easily. We should ask chris. One thing is for sure: CSTal has very different evaluations, very different main-lines and sacs and also sacs where all other programs say: there is no sac possible. And suddenly, after a few moves, the others find out about. >CSTal behaviour could be the effect of a non-minimax algorithm, but not >necessary. Maybe Thorsten can shed some light on this? Without betraying >Chris secrets, of course. In the moment I am not sure about Chris wishes and if I am still allowed to say anything because we had some arguments and - as I told before, he claimed that work on CSTal is over. This would not allow me to say anything, especially when he ended the friendship with me, I would not be allowed to say anything. If you want we can post a few strange positions only CSTal finds and ask the others what happens there. We can post the sendinfos/log-files of CSTal. I could e.g. let CSTal fight vs. ChessTiger (so that people will not say: ough - you cheated because you are against ANTI Fritz) . I like ChessTiger AND CSTal and we could see how both programs fight each other and you Christophe could maybe comment why Tiger played soandso. And maybe we get chris to comment why CSTal played soandso. If we choose Tiger vs. CSTal people would not THINK this is a campaign AGAINST a commercial program. Maybe this would clearify enough to show where CSTal is different. In Aegon I did the same with Don Daily, played some games vs. his single-cilk-chess-program and that was also very very funny. Cilk always had the better materialistic position (one pawn ahead or more) but lost the games due to eat to much. The games were exiting. > > Christophe How about this idea ?? As cstal has the log-file feature like crafty (and others) have, we can easily post the main-lines and evals... No cheating possible :-)))
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