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Subject: Re: Crafty19.15 no better than Crafty19.14 based on infinite loop

Author: Dann Corbit

Date: 13:04:32 07/28/04

Go up one level in this thread


On July 28, 2004 at 07:34:24, Uri Blass wrote:

>The infinite loop suggest no significant improvement
>Many versions of Crafty19.15 played in the same tournament with Crafty19.14
>
>see http://www.digichess.gr/infiniteloop/home.php
>
>Crafty19.14 scored equal or better relative to many versions of 19.15
>
>If the probability of Every 19.15 to score more points than 19.14 in a
>tournament of 28 games is 60%(I expect it from a significant improvement) then
>the probability of all versions not to score better than 19.14 is 0.4^4<0.05
>
>
>Tried to promote to the infinite loop and failed
>Crafty 19.15 SE Ramat-Gan [Polgar] 17.5(equal to 19.14 DC)
>Crafty 19.15 PS                    16.5
>Crafty 19.15 BH                    15.5
>Crafty 19.15 DC                     9.5
>

There is just enough data at this stage to confidently state:
"We have no idea which one is strongest."

Note the size of the error bars:
    Program                     Elo    +   -   Games   Score   Av.Op.  Draws
  1 Thinker 4.6b              : 2721  114 111    28    67.9 %   2592   35.7 %
  2 Crafty 19.14 DC           : 2683  121  99    28    62.5 %   2594   39.3 %
  3 Crafty 19.15 SERG [Polgar]: 2683  121 135    28    62.5 %   2594   17.9 %
  4 Thinker 4.6c              : 2683  121 111    28    62.5 %   2594   32.1 %
  5 Crafty 19.15 PS           : 2659  126 107    28    58.9 %   2596   32.1 %
  6 Gothmog 1.0 beta 7        : 2647  128 110    28    57.1 %   2597   28.6 %
  7 Crafty 19.15 BH           : 2635  131  75    28    55.4 %   2598   53.6 %
  8 Gothmog 1.0 beta 10       : 2612  138 100    28    51.8 %   2599   32.1 %
  9 Comet B.68                : 2600  117 117    28    50.0 %   2600   28.6 %
 10 Green Light Chess 3.00.3.4: 2577  115 134    28    46.4 %   2602   21.4 %
 11 Green Light Chess 2.18    : 2517  111 121    28    37.5 %   2606   32.1 %
 12 King Of Kings 2.56        : 2505  119 118    28    35.7 %   2607   28.6 %
 13 King of Kings 2.52        : 2492  102 116    28    33.9 %   2608   39.3 %
 14 Crafty 19.15 DC           : 2492  102 116    28    33.9 %   2608   39.3 %
 15 Comet B.48                : 2492  102 116    28    33.9 %   2608   39.3 %



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