Author: Mike S.
Date: 22:01:57 11/08/01
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On November 08, 2001 at 10:20:37, Uri Blass wrote: >I define a real sacrifice of chess program as a move that is losing material >based on only material evaluation but is played by the program because the >positional score is bigger than a pawn. > >How many real sacrifice are played by programs? > >It may be interesting to get information about the average number of real >sacrifice per game by different programs. I think by now, "dynamical" sacs are not unusual anymore (for a king attack), but positional sacs will still be very few. I wouldn't expect more than 0.0# per game. Maybe that's too pessimistic, I haven't counted. An very obvious positional sac is this test position which I like (from the Nielsen rating test): Nielsen - Ratingtest 1988 [Pos.Profil-08] [D]1r1r2k1/2b1qp1p/b1p3p1/p1p1p3/2P1P3/1PN1BP2/P1Q3PP/R2R2K1 b - - 0 1 1...Rd4! Doubled pawn goes, protected passer comes. Many programs find that. Regards, M.Scheidl
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