Author: James T. Walker
Date: 17:57:48 12/15/00
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On December 15, 2000 at 18:58:42, Uri Blass wrote: >On December 15, 2000 at 18:52:25, Uri Blass wrote: > >>On December 15, 2000 at 12:37:36, Laurence Chen wrote: >> >>>On December 14, 2000 at 20:31:56, James T. Walker wrote: >>> >>>>On December 14, 2000 at 13:18:47, Steve Maughan wrote: >>>> >>>>>I don't think I've ever seen such a wide margin diminish to defeat! >>>><snip> >>>> >>>>I have only had Shredder for 4 days but I saw this type of behavior a lot at >>>>blitz on an Athlon 900 Mhz. Even at G/30 this seems to happen. At G/60 on an >>>>Athlon 900 it has not showed up yet. That's why I made the comment earlier >>>>"Shredder a mudder". Refering to the fact that Shredder seems to like the >>>>slower time controls with faster hardware. I suspect there are a lot of holes >>>>in it's eval that can only be covered up with deeper searches. Just my opinion >>>>based on 4 days. :-) >>>>Jim >>>I had Shredder 5 for a 3 days, and I came with the same conclusion. The >>>evaluations of Shredder changes as it digs deeper, which means that one way to >>>help Shredder is to use the fastest computer available, and slower time control. >>>Regards, >>>Laurence >> >>The evaluation of all programs is changed when they get deeper. >>There are holes in the evaluations of all chess programs. >> >>If you find that the evaluation of Shredder is changed more than other program >>then it still does not prove that there are bigger holes in Shredder's >>evaluation because it is possible to explain it by other reasons. >> >>Uri > >I can add that the +4.68 was not a hole in Shredder's evaluation because >Shredder had a clearly better position when it evaluated itself as +4.68 > >Uri Hello Uri, Well without an indepth analysis I can only say I don't know of any other programs I have that will lose a game after being up by +4.68. I have seen several draw after that kind of score and it usually is because they believe they can win with a minor piece and pawn when it is only a draw. It seems to me that Shredder missed something big somewhere. Something most top programs would not miss. Jim
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