Author: Uri Blass
Date: 12:02:47 02/23/04
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On February 23, 2004 at 13:33:12, John Merlino wrote: >Michael Byrne posted some analysis by Shredder 8 yesterday that ended with these >two PVs: > >24.Bxg6 Bxe6 25.Bxh7+ Kh8 26.Rh1 Bh4 27.Bd3 Rxf4 28.Nxh4 Nxd4 29.Nf3+ Bh3 >30.Rhxh3+ Rh4 31.Rxh4# > +- (5.11) Depth: 15/45 00:03:50 85550kN >24.Bxg6 Bxe6 25.Bxh7+ Kh8 26.Rh1 Bh4 27.Bd3 Rxf4 28.Nxh4 Rxd4 29.Nf5+ Rh4 >30.Rxh4# > +- (5.61) Depth: 15/46 00:04:40 100640kN > >Obviously, those '#' symbols are incongruous with the eval. Has this been >mentioned before? > >The post is at www.talkchess.com/forums/1/message.html?350488. > >jm I saw this king of behaviour with some programs. Shredder is not the first program when it happened to it and I saw it with Junior and Crafty in the past. I guess that it is no bug and there are 2 possibilities: 1)Shredder does not detect mate in the evaluation 2)The pv is some not reliable moves that shredder collected from the hash tables instead of having pv array. Uri
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