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Subject: Re: Crafty 19.10

Author: Mike Byrne

Date: 08:48:39 02/01/04

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On February 01, 2004 at 11:18:45, David Dahlem wrote:

>I see the source for Crafty 19.10 is now available at ....
>
>ftp://ftp.cis.uab.edu/pub/hyatt/v19/crafty-19.10.zip
>
>What are the changes in this version? Is this the version playing in CCT6?
>
>Regards
>Dave

from main.c:


 *******************************************************************************
 *   19.10   a fix to the EvaluateWinner() code to recognize that while KRB vs *
 *           KR can not normally be won by the KRB side, we require that the   *
 *           KR side not be trapped on the edge of the board, where it can be  *
 *           mated.  FUTILITY code put back in.  19.9 will be the SE version   *
 *           for those wanting to play with it.  new "learn" command option to *
 *           allow the user to set the position learning parameters that are   *
 *           used to trigger position learning and disable position learning   *
 *           after the game is already lost.  the command syntax is as follows *
 *           "learn trigger cutoff" and are expressed as fractions of a pawn   *
 *           with a decimel point.  the default is learn .33 -2.0 which says   *
 *           to do position learning when the score drops 1/3 of a pawn, but   *
 *           turn it off after the score reaches -2.00 as the game is already  *
 *           lost and learning won't help at this point.  this is the CCT-6    *
 *           version exactly as played in the CCT-6 tournament.                *
 *                                                                             *
 *******************************************************************************

I had not realzied that there was newer version --- so Crafty 19.09 SE will not
be released :(

-- I will start working on Crafty 19.10 SE,  since this version appears to be
the "keeper" here.  All my changes made to 19.09 will be carried over to 19.10
SE  :>)





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