Author: Komputer Korner
Date: 19:34:39 01/11/98
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There is an easy way to find out. Set up the initial position except for one side being minus a pawn. Try this for all the different pawns. Look at the scores. Some programs like M-Chess 7.1 have high evaluation scores but it isn't clear how much of this is due to overestimation of the positional score or whether the materiel scores are high. Hiarcs 6 score is 1.28 units per pawn. Has anybody done any tests? I don't seem to have time anymore to do tests. On January 11, 1998 at 20:56:06, Robert Hyatt wrote: >On January 11, 1998 at 18:12:56, Howard Exner wrote: > >>Does anyone know how the different programs rate the value of a pawn? >>I think someone (probably Ed Schroder) said that Rebel's score >>is about 0.75. >> >>Does it make sense to compare eval scores across programs? ie:"this >>program does better here because of its +4.55 eval versus this >>other program at +3.62". In reality for program X, 4.55 might be 4 pawns >>while program Y at 3.62 could be 5 pawns. Is this right? > >This is difficult. But you are really asking the wrong question. IE, >suppose Rebel does this: P=.8, N=3.0, B=3.3, R=5.0 and Q=9.0. And >suppose >I did something like this: P=1.0, N=3.5, B=3.8, R=5.5 and Q=10.0... >what >would that mean? If you notice, these are actually about equal, as far >as material goes... > >So the value of a pawn is not the real issue... it is the value of a >unit >of material... which makes it harder to understand..
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