Author: Mark Young
Date: 14:50:06 11/08/01
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On November 08, 2001 at 12:43:23, Uri Blass wrote: >On November 08, 2001 at 11:04:59, Mark Young wrote: > >>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. >> >>Most of the Real sacs I have seen are based on mating attacks. Do you define >>this as a real sacrifice? > >If the program can see the mate or can see material that it get I define it as a >combination and not as a real sacrifice That is the problem with how you define real sacrifice, it is based on what the player or computer sees. So it is possible for a given board position to be both a "combination" or a "real sacrifice" with how you define it based on what program is playing it, and what it sees. > >The test if it is a real sacrifice can be done by a materialistic program with >good search rules(positional scores always lower than 0.5 pawn so we can know >the material score based on the score of the program). > >If the materialistic program can only see that the sacrifice is losing material >even after a long search then it is clearly a real sacrifice. > >Uri
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