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Subject: Re: Crafty move format question

Author: Robert Hyatt

Date: 19:35:53 09/16/01

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On September 16, 2001 at 12:24:56, Alvaro Jose Povoa Cardoso wrote:

>Could someone (namely Dr Hyatt) please describe in detail the packed move format
>used in crafty?
>
>As some of you might know I've been programming checkers (portuguese/spanish).
>Only now I'm getting into chess, so please forgive this amateur question.
>
>
>Thank you,
>Alvaro Cardoso


5 fields...

rightmost 6 bits = from square

next 6 bits = to square (0-63, 0=a1, 63=h8)

next 3 bits are moving piece.

next 3 bits are captured piece.

next 3 bits are promotion piece

for pieces, pawn=1, knight=2, king=3, bishop=5, rook=6, queen=7

Is that enough info??

Bob



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