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Subject: Re: Crafty 17-10 v Fritz 6a Nunn 1 @ 120'/40 + 60'/20 + 30'

Author: blass uri

Date: 09:53:53 04/27/00

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On April 27, 2000 at 12:28:38, Enrique Irazoqui wrote:

>On April 27, 2000 at 12:20:10, blass uri wrote:
>
>>On April 27, 2000 at 11:48:24, Enrique Irazoqui wrote:
>>
>>>On April 27, 2000 at 02:16:48, Chessfun wrote:
>>>
>>>>
>>>>All games on one Cel 433.
>>>>Ponder=off.
>>>>Tablebases used at 25 and longer.
>>>>Nunn 1 positions.
>>>>No opening books are loaded.
>>>>
>>>> 1 min game    Fritz 6a 14.5 - 5.5 Crafty 17-10
>>>> 2 min game    Fritz 6a 14.5 - 5.5 Crafty 17-10
>>>> 3 min game    Fritz 6a 13.0 - 7.0 Crafty 17-10
>>>> 5 min game    Fritz 6a 15.5 - 4.5 Crafty 17-10
>>>>10 min game    Fritz 6a 13.0 - 7.0 Crafty 17-10
>>>>25 min game    Fritz 6a 13.0 - 7.0 Crafty 17-10
>>>>60 min game    Fritz 6a 15.5 - 4.5 Crafty 17-10
>>>>Tourney times  Fritz 6a 14.5 - 5.5 Crafty 17-10
>>>>
>>>>Once I figure out how to autoplay from the Nunn 1 opening
>>>>positions I will play all games with ponder=on.
>>>>
>>>>Thanks.
>>>
>>>I find what you are doing very interesting, not so much concerning the relative
>>>strength of Fritz and Crafty, which a series of matches between them can't
>>>determine anyway, but regarding testing procedures.
>>>
>>>I ran 2 similar matches myself between Crafty 17.10 and Fritz 6a in the GUI of
>>>Fritz 6a, with the General book of F6 (Alex Kure), tablebases on (2.6 GB of the
>>>Turbo CDs) and 4MB hash for each engine. The first match was played on 2 P600E,
>>>Game/1 minute, ponder on. The second, on a single P600E, ponder on and game/2
>>>minutes, since each program is using 50% of the CPU.
>>>
>>>In the first match, Fritz 6a won 15-5, which is consistent with your 14.5-5.5
>>>and seems to indicate that ponder off doesn't hurt Crafty more than Fritz.
>>
>>I cannot compare between your match and the nunn match because the positions are
>>not the same.
>>
>>I guess that ponder off does not hurt crafty more than Fritz but to prove it you
>>should use the same positions.
>>
>>It is better to use something like the nunn match in every test otherwise the
>>lucky program with the choice of the opening has advantage.
>>You can use different positions and not have to use the nunn positions but every
>>program should play the same positions with white and black.
>>
>>Uri
>
>I find interesting this series of matches because they may tell us something
>about the value of ponder on/off, playing on 1 or 2 machines, blitz vs. slow
>games. About using the Nunn positions, I think that they are useful to avoid
>randomness and to measure engines instead of books, but maybe we can achieve the
>same by using the same book for both engines, as I did. So far, my results and
>Chessfun's are pretty consistent.

I think it is better to use the same positions because there is less luck in the
choice of the opening.

I have no problem with using Fritz6's book but I think that the engines should
play the same positions out of book with white and with black.

Uri
>
>Instead, there is lack of consistency between these blitz results and the SSDF
>match at 40:2 that Fritz wins so far by 15-10, or 60% instead of the 75% of the
>blitz matches.
>
>Enrique



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