Author: Ulrich Tuerke
Date: 12:57:12 10/13/03
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On October 13, 2003 at 14:56:57, Gerd Isenberg wrote: >On October 13, 2003 at 14:19:14, Christophe Theron wrote: > >>On October 13, 2003 at 13:09:03, Charles Roberson wrote: >> >>> >>> You make the statement that Diep is a positional engine and you chose it based >>>on that. So, why did you run G/5 matches? At G/5 tactics and search depth >>>is crucial. >> >> >> >>I would like to bring to your attention that tactics and search depth are >>crucial at any time controls in chess. >> >>Showing dimishing returns from increased search depth is so difficult that in >>practice there is little difference between blitz and long time controls. >> >>If engine A gets a beating at blitz, expect it to get the same beating if you >>repeat the match with long time controls. >> >> >> >> Christophe > >Christophe, > >couldn't it be, that engines have some odd/even sympathy/antipathy? >If the characteristic line of this property is to be out of phase between two >programs, i can imagine that one is a better blitzer but the other the better >medium time player. > >And what about fast against slow with "more" or "better" knowledge. At blitz >time control the the linear speedup (fast/slow) may be more important. But due >to superior branching factor at sime time the "better" knowledge pays off and >the match tilts. > Gerd, I think that your questions are more or less of the rhetorical kind. We all know that these effects exist, remembering for instance the good old MChess which had been rather weak at Blitz and strong at longer time controls. IMHO, a result of an engine-engine match like the one mentioned by Djordje isn't unusual at all. It happens more often than intuition may expect; engine-engine matches sometimes tend to exaggerate differences in playing level. A better base is to compare their results against a whole spectrum of opponents. Greetings, Uli PS do you participate in Leiden ? If so, best wishes ! >Gerd
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