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Subject: Re: Tiger, Goliath and Crafty in tactical comparison

Author: Jouni Uski

Date: 01:13:38 06/13/01

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On June 13, 2001 at 01:23:51, Uri Blass wrote:

>On June 13, 2001 at 01:14:51, Jouni Uski wrote:
>
>>I run these 3 programs in my test suite, which contains 100 hard, but correct
>>ECM positions. I compared solved positions after 5s, 20s, 1m, 3m and 10 minutes
>>in my AMD 450Mhz (hash 90-128MB). Here's results:
>>
>>                   5s   20s   1m   3m   10m
>>Chess Tiger 14     30   49    62   77   84
>>Goliath Light      17   46    74   84   91
>>Crafty 18.7        12   30    47   64   82
>>
>>Here's same as graph:
>>
>>   |                                                x
>>90 +
>>   |
>>   |
>>   |                                      x         t
>>   |                                                c
>>80 +
>>   |
>>   |                                      t
>>   |                            x
>>   |
>>70 +
>>   |
>>   |
>>   |                                      c
>>   |                            t
>>60 +
>>   |
>>   |
>>   |
>>   |
>>50 +                  t
>>   |                            c
>>   |                  x
>>   |
>>   |
>>40 +
>>   |
>>   |
>>   |
>>   |
>>30 +        t         c
>>   |
>>   |
>>   |
>>   |                             x = Goliath
>>20 +                             t = Tiger
>>   |                             c = Crafty
>>   |        x
>>   |
>>   |        c
>>10 +
>>   |
>>   |
>>   |
>>   |
>>   ----------------------------------------------------------------
>>            5s        20s       1m        3m        10m
>>
>>Interestingly Crafty gets more positions almost linear. Tiger starts best, but
>>then Goliath goes over. This is no big surprise, when it peaks over 1,4MNPS.
>>
>>Jouni
>
>The number of nodes is not important.
>
>I believe that Goliath is best only because it is tuned for test positions.
>
>Uri

I am not sure about this... BTW if You want to get still better scores, you can
set "combination search" in engine settings :-)

Jouni



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