Author: Robert Hyatt
Date: 11:16:09 10/04/01
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On October 04, 2001 at 07:03:14, Tim Foden wrote: >Hi All, > >I decided that I would add a 2nd SEE to GLC to check whether GLC's SEE was >working. I actually ported GCP's Sjeng SEE (that was posted to the forum a >while ago). > >Both SEE routines now agree in most curcumstances, but one's like the following >have cropped up (where they disagree): > >[D]5rk1/1pp2R1p/p1pb4/6q1/3P1p2/2P4r/PP1BQ1P1/5RKN w - - 2 0 > >This can be evaluated in 2 ways... > >(1) BxP (+1000) BxB (-3500) R1xB (+3500) QxR (-5500) RxQ (+10000) RxR (-5500) >.........+1000.......-2500........+1000.......-4500........+5500...........0 > >>>> value = 0 > >(2) BxP (+1000) BxB (-3500) R7xB (+3500) RxR (-5500) RxR (+5500) QxR (-5500) >.........+1000.......-2500........+1000.......-4500.......+1000.......-4500 > >>>> value = -2500 > >So... on to the questions: > >a) Does anyone's SEE do anything intelligent in these cases? Not mine. I just use the lowest-valued pieces first. In this case, using the right rook wins material, the wrong one doesn't... > >b) Is one of these right, and the other wrong? If so, which one? The one that captures with the rook and forces the opponent to recapture with the queen rather than the remaining rook. > >c) Do we actually care, as long as the SEE works in the majority of cases? I guess not. :) > >Cheers, Tim.
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