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Subject: Re: Strongest Crafty Version?

Author: pavel

Date: 08:24:54 03/11/05

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On March 11, 2005 at 05:24:46, Dieter Buerssner wrote:

>Pavel, be very careful, when you intend to run multiple games between Crafty
>versions. At least some versions will use a very narrow book, when they see
>"computer". book_width/random stuff will be ignored. So you can easily end with
>many duplicates or almost duplicates, or you might just probe, who is the
>best/most aggressive learner. Perhaps even the luckiest. I myself prefer testing
>with no learning enabled. Testing my tournament (mininimal repertoire) book
>against default Crafty (with default book of that time - but this may have
>changed) yielded only in dupes.
>
>Regards,
>Dieter

Hi Dieter,
Thanks for the info.
I should have thought of this before I started the tournament.
I know newer versions of crafty changes it's book style when playing against a
computer. But I am not sure if it makes a big differance. Because allmost all
versions are far apart in terms of development, apart from learnings, changes in
eval will also make a differance.

I am also interested to run a tournament with the same opponents with learning
off. I know how do it in newer versions with .craftyrc , but does it work the
same way with older versions?

After few more games:
Program                        Elo    +   -   Games   Score   Av.Op.  Draws

  1 Crafty1815               : 2662   85  82    46    70.7 %   2509   37.0 %
  2 Crafty1619               : 2661  108 103    45    71.1 %   2505   13.3 %
  3 Aristarch450             : 2630   93  90    46    67.4 %   2504   26.1 %
  4 Crafty1714               : 2618  101  98    46    66.3 %   2500   15.2 %
  5 Crafty1290               : 2550   91  91    46    54.3 %   2520   21.7 %
  6 Crafty1915               : 2542  131 130    25    52.0 %   2528   16.0 %
  7 Crafty1919               : 2536   81  81    46    53.3 %   2513   37.0 %
  8 Crafty1310               : 2505   89  90    46    46.7 %   2527   23.9 %
  9 Crafty1520               : 2470   83  83    46    43.5 %   2516   34.8 %
 10 Crafty1413               : 2442   85  86    46    38.0 %   2527   32.6 %
 11 Crafty1123               : 2425   96  99    46    34.8 %   2534   17.4 %
 12 ChessterfieldCL          : 1983  182  11    46     3.3 %   2572    6.5 %

newer versions of crafty are catching up. For me the most impressive is
crafty12.90, how old is this version? Atleast 7 years?

Points table:
http://www.pavs.org/chess.html

Cheers,
pavs



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