Author: Robert Hyatt
Date: 07:54:41 09/25/98
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On September 24, 1998 at 21:17:30, Peter McKenzie wrote: >Is there a standard format for opening books, so that they can be exchanged >between programs? > >If not, is anyone interested in defining such a format? > >Regards, >Peter If you mean the "binary form" then no. Most use hash signatures to match positions. If you don't use the same random number generate the hash signatures, this won't work. If you don't use the same piece "indices" this won't work (ie in crafty I use a 43bit value to represent a piece, where the upper bit says "this slides like a rook or bishop". This gives my piece values as follows: P=1, N=2, K=3, B=5, R=6, Q=7. Now I can "AND" with 4 and if that is non- zero, this is a "slider". Problem here is that most would use P=1, N=2, B=3, R=4, Q=5, K=6. And that would index the random numbers differently again causing problems. We do have a portable book format, however. It is called "PGN"... :)
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