Author: Dann Corbit
Date: 15:27:05 12/20/04
Go up one level in this thread
On December 20, 2004 at 17:39:34, Eric Oldre wrote: >On December 20, 2004 at 16:53:54, Thorsten Czub wrote: > >>IMO its not the search depth that is amazing. >>Its the high evaluation. it has very often very very high evaluations. >> >>the search depth seems IMO not so important. i have seen many games where it >>loses against programs with LOWER search depth , so there seems to be a price to >>REACH the search depths. >> >>but the high evaluations... what about them ? has any other chess program that >>high evaluations ? > >when you say shredder has high evaluations? do you mean that it does more >evaluations per second? > >I don't own shredder but if that is the case how many evals/sec does it do? It is not unusual for Shredder to have an evaluation of +200 or more 15 plies before the opponent score goes negative. It is not from counting the pieces on the board (which usually look even in such cases where Shredder sees something that the others do not) so I assume that either it is a very high positional score or maybe the branches is searches are much smarter and so it sees incredibly deep tactics. Shredder also gets surprised by another programs moves from time to time, so I think on rare occasions too much might be pruned away. But on the whole, the pruning strategy (whatever it is) seems to be better that that of anyone else as shown by OTB results.
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