Author: Mike S.
Date: 11:14:09 02/19/06
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On February 19, 2006 at 13:59:36, Bahram Namjou wrote: >I asked this question before but with no comments so I post it again! > > >when the ponder is on and chess engine thinks and evaluates a position, all of >the further evaluations are only based on one predicted move that considered to >be the opponent best next move however never this predicted move will change >during "thinking time" no matter this "thinking time" is 5 seconds or 50 >minutes...can anyone explain this why?...thanks, bn If engine (A) plays vs. engine (B) and for example plays 17.d5 expecting 17...d5: If it ponders now, it has no information about what engine (B) is planning, 17...d5 or maybe something else, like in a human's game: You don't know what the opponent will really move (except there is only one forced move) as long as he has not actually played his move. (A) can only calculate based on it's own assumption. There was an old chess computer by SciSys (Saitek) which had a "multiple" permanent brain, trying to prepare for several different opponent's replies. I think this concept remained very unique, and I consider it to be effective (or attractive) only in games versus humans if they use much more time than the chess computer. It was not very strong, compared to today's systems. That could be an interesting option for program vs. human training games though. Regards, M.Scheidl
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