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Subject: Re: First draw against Crafty, long tc

Author: Robert Hyatt

Date: 16:30:23 10/07/04

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On October 07, 2004 at 18:25:50, Kim Roper Jensen wrote:

>Hi
>
>Im quite sure i have fumbled somewhere, woeldnt be the first time - the 3 files
>i copied where book.bin, bookc.bin and books.bin
>
>Apart from that im curious why crafty never tried to play f5 and why it fiddles
>around with the knights on the king side ?
>
>found computer opening book file [./bookc.bin].
>hash table memory =  768M bytes.
>pawn hash table memory =   48M bytes.
>ERROR "logg off" is unknown rc-file option
>
>Crafty v19.17 (1 cpus)
>
>White(1): show book
>show book statistics
>White(1): ponder off
>pondering disabled.
>White(1): d4
>              time used:  36.10
>  after screening, the following moves can be played
>  move     played    %  score    learn     CAP     sortv   P%  P
>    d6      12083   86   0.20     0.00  -655.36    1160.9   0  Y
>    d5?         0    0   0.14     0.00  -655.36     221.0   0  N
>    c6       1283    9   0.36     0.00  -655.36     107.2   0  Y
>    b6?       590    4   0.35     0.00  -655.36      59.8   0  N
>    g5?        12    0   0.32     0.00  -655.36      42.0   0  N
>               book moves {d6, c6}
>               moves considered {d6, c6}
>  move     played    %  score     sortv  P%  P
>    d6      12083   86   0.20    1160.0   0  Y
>    c6       1283    9   0.14     107.0   0  Y
>               book   0.0s     86%    d6 e4
>
>Black(1): d6
>              time used:   0.00
>White(2):

The problem is "amd 64".

The book.bin/books.bin files are _not_ portable to anything but 32-bit X86
machines.  The problem is that the amd 64 makes the book structure longer and
that wrecks the binary portability of the book.

You are basically playing with a book that is corrupted beyond usability.  I did
this a couple of time myself when fooling with the opteron system a while back.
your only choice is to download the enormous.pgn and start.pgn files, and create
your own books from scratch...





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