Author: Peter Fendrich
Date: 12:08:09 05/14/98
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On May 14, 1998 at 13:59:49, Ed Schröder wrote: >>Posted by Amir Ban on May 14, 1998 at 09:54:26: > >>In Reply to: why do computers waste time about forced moves? posted by blass >>uri on May 14, 1998 at 09:02:54: > >>On May 14, 1998 at 09:02:54, blass uri wrote: > >>>when I give junior to play with fritz I see both programs >>>waste time about forced moves(there is more than one legal move >>>but only one logical move to prevent checkmate. > >>>I suggest that the program will use in calculating one second to >>>compute the difference between the best move and the second >>>best move. >>>if the second best move and decide about maximal time >>>that it should consider the move. >>>It is only a small improvement >>>because most of the moves are not forced >>>but this improvement seem to me simple to program. > >>>if the next best move give the opponent >>>the possibility to do a checkmate the program should use only 1 >>>second calculating the move. > >>>if the second best move lose a knight it should use more than >>>1 second(because maybe it is a mistake) but not much time. > >>>I suggest the maximal time can be by the formula 1+(c/x) >>>when c is a constant and x is the difference between the best move >>>and the second best move (if the difference is more than a pawn) > >>It's a mistake to play "obvious" moves too fast. Rebel does that, and I >>believe it lost quite a few games on this account. > >It was a customers wish from the Mephisto time. Bottom line, better >make a bad move so now and then (< 1%) then waiting 10 minutes for >a simple recapture. > >Like "selective search" it will never be equal as "brute force", still >the final result is better. This time the result is not better for the >playing strength of Rebel but it's there for the satisfaction of the >customer. > >It's easy to remove the "quick capture" algorithm and gain some (5?) >elo points but I think it's not worthy the complaints afterwards. > >- Ed - Are you really sure that you would gain some elo points? If you earn, say 1 minute, for every "quick capt" that gives you >100 minutes extra time for every bad decision (if the error rate is < 1%). That's a lot of time! //Peter
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