Author: Stefan Zipproth
Date: 14:06:44 01/29/04
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On January 29, 2004 at 15:51:58, Drexel,Michael wrote: >On January 29, 2004 at 12:20:35, Stefan Zipproth wrote: > >>Hi all, >> >>thanks for your comments. Because of the big interest in this topic and somewhat >>unfriendly e-mails that were sent to Fritz Reul, we decided to put an official >>statement on the web site (see "About List"). >> >>I want to make clear that we do not want to argue and raise hot discussions, or >>achieve that everybody agrees with our statement. But we definitely want to >>achieve that people talk about chess again - even if this is a topic that is of >>course important and which gives reason for discussions. >> >>Best regards, >>Stefan > >You wrote: "It is easy to prove that List is far stronger than any version of >Crafty" > >Can you elaborate on that? Have you tested at least one of the recent versions >19.09 winboard or 19.08 CB? >Do you refer to tournament time controls? > >Michael Hi Michael, thanks for your remakrs. I never refer to tournament time controls, because I see no way to play hundreds of games with long time controls. If Crafty would win 13-7 against List, this is has no relevance because it is not statistically significant. My tournaments often begin with something like 13-7, then it continues with 30-40, and only after several hundred games the result becomes stable. Simple mathematics, as mentioned in section "Ratings lists". In addition, I must admit that I did not test against Crafty, but a long test against Fritz 7 was made, with time control 5+5 if I remember correctly. List is as strong as Fritz 7. I do not know if Crafty does indeed achieve this. Besides: Long games do not increase the significance, i. e. 2 long games are no substitute for 4 blitz games - they are only a different way of testing which produced different results. But as I said, I see no way to use these test conditions (though I would like to), only by analyzing long games by hand. But that is only useful for improving an engine, because one cannot conclude from one or 10 games to the exact playing strength of an engine (or a human player) - chess is too multifaceted. Best regards, Stefan
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