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Subject: Re: Isn't Crafty 16.19 a better Blitzer than version 18.1 ?

Author: Robert Hyatt

Date: 06:43:51 01/25/01

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On January 25, 2001 at 09:10:15, Aloisio Ponti Lopes wrote:

>On January 24, 2001 at 16:26:23, Robert Hyatt wrote:
>
>>>Here's one quick experiment: On your 200Mhz machine, at a time control of
>>>5 3 or faster, Gambit Tiger might lose to Crafty. It scored +12 -12 =7 on
>>>mine.
>>
>>
>>I can tell you absolutely that your data is flawed.  Crafty is _absolutely_
>>weaker at blitz than it is at longer time controls.  And this is based on
>>_thousands_ of test games, not on a few dozen.  The things I do in my search
>>rely on fast hardware, or else long time controls.  The faster the game, the
>>worse Crafty will do as its simple q-search will get it into trouble faster
>>since null-move failures happen more often at reduced depth...
>
>Maybe against 16.19 the results would have been diferent ?
>
>A. Ponti


I don't believe so.  It would be possible to play a 1000 game match, but I am
not sure X vs X matches show a lot unless X is very close to Y except for 1
change...  it gives an idea about the single change.

16.19 has the _same_ search as 18.1, and suffers from the same null-move
problem...



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