Author: Keith Evans
Date: 09:39:24 02/18/03
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On February 18, 2003 at 10:56:23, Joshua Lee wrote: >Has anyone checked out that behind Deep Blue book ? Is there anything in it that >answers this question? > >Why won't they release source code or games? What do they have to lose? > >Thank you Your best bet is to track down an article titled "Deep Blue" published in "Artificial Intelligence 134 (2002) 57–83" "Appendix A. Evaluation tables and registers" might be interesting to you. It's very brief but hints at what is in there. Here's a teaser... Rooks on seventh, Bias, Rook behind passed, Pinned and simple hung, Hung, Xraying, Pinned and hung, Permanent pin, Knight trap, Rook trap, Queen trap, Wasted pawns, Bishop pair, Separated passed, Missing wing, BOC (bishops of opposite color), Side to move, Multiple pawns,Minor on weak, Self block, Opp block, Back block, Pinned, Mobility, Pawn structure, Passed pawns, Joint signature, Rooks on files, Bishops, Pawn storm, Pawn shelter, Development, Trapped bishop, Signature, Contempt, Piece placement What you won't be able to find is a really detailed explanation of what all of these mean, and how they were weighted. (Maybe some weren't actually used?) If you read the "Behind Deep Blue" book then you'll see that the machine was being fine tuned throughout the match. Regards, Keith
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