Author: Michael Yee
Date: 21:17:09 02/20/05
Go up one level in this thread
On February 20, 2005 at 10:39:47, stuart taylor wrote: >On February 20, 2005 at 10:36:22, stuart taylor wrote: > >>http://web.telia.com/~u85924109/ssdf/list.htm (any better?) >> >>According to this most recent ssdf list, doesn't it look like the past 2 >>Shredders are the biggest challenges? >>Not only that, but often, Shredder 7.04 got better results even than Shredder 8, >>and here, it is only one point behind, which is nothing. >>So the question is, has Shredder 9 got out of that hole, and become more >>noticeably better, or not? >>And, not always have upgrades of chess programs been stronger. >>S.Taylor The CSS rating list shows Shredder getting stronger with each version: http://www.computerschach.com/rangliste/rangliste_ewig_ssdf.htm Different lists just show that computer chess has some randomness and it can take a while for accurate strength estimates. Also, I think there are some subtle biases in the elo system that depend on the strength difference between opponents. See, e.g., http://www.chessbase.com/newsdetail.asp?newsid=562 So if a new version of a program doesn't play the same average level of opponents as the old one, it might not be totally fair to compare ratings. Michael
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