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Subject: Re: Crafty 17.10 not that strong

Author: Chessfun

Date: 21:28:01 04/22/00

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On April 22, 2000 at 17:22:52, Robert Hyatt wrote:

>On April 22, 2000 at 14:20:57, A.L.Mourik wrote:
>
>>Hello dear CCC friends,
>>
>>Although earlier reports from e.g. Jouni Uski, suggest an enormous increase in
>>strenght for Crafty 17.10
>>Nuun 2 match result Fritz6 against Crafty  17.10 ends in a very clear
>>29,5-10,5!! victory for Fritz6.
>>Played on PII 400 8mb for HT, Timecontrol 5 min + 3 sec per move.
>
>
>This keeps coming up, so I may as well add my two cents worth one more
>time..
>
>You did _not_ reproduce the results of others.  But then you didn't run
>the same test either.  You used one computer, presumably with ponder=off.
>That is _not_ a reasonable test.  Lots of reasons, but to make it simple:
>
>Let's play a match with no opening book.  That favors the program with the
>lousy book.
>
>Let's play a match with search extensions and tricks disabled.  That favors
>the program with the best eval.
>
>Let's play a match with evals disabled. That favors the program with the
>best search.
>
>Lets play a match searching to fixed depth.  That favors the program that does
>the most work per node.
>
>Let's play a match searching to a fixed time limit. That favors the program
>that has a horrible automatic time allocation algorithm.
>
>In short, when you turn off _anything_ you most likely affect one program more
>than the other.  You turned off pondering.  I have reported several times that
>such hurts crafty, definitely.  I allocate time based on the _assumption_ that
>I will save some time later in the game with correct pondering predictions.  I
>don't when I can't ponder.


Turning off pondering in the F6 interface is suggested.
It is NOT recomended to enable pondering.


>The results are interesting, but they have _nothing_ to do with the way I would
>actually play a game against fritz in a real tournament.  I would _not_ play
>without pondering enabled...


Your post could have been made as a reply to Jouni's post
since the topic was the same, only a different score.

Thanks.



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