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Subject: Re: Shredder crushing Chess Tiger.

Author: Uri Blass

Date: 22:52:02 12/15/03

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On December 15, 2003 at 23:06:35, John Rissler wrote:

>On December 14, 2003 at 18:53:08, Christophe Theron wrote:
>
>>On December 14, 2003 at 15:49:38, Richard Sutherland wrote:
>>
>>>On December 14, 2003 at 15:39:47, Rajen Gupta wrote:
>>>
>>>>On December 14, 2003 at 13:26:33, Richard Sutherland wrote:
>>>>
>>>>>Well, I know you all probably know this already, but although Shredder is the
>>>>>World Champion I am a little surprised at the ease with which it is crushing
>>>>>Chess Tiger 15 in my mini-match right now. I am playing an auto232 match between
>>>>>two identical PC's (Intel 2.54Gb) an game in one-hour and Shredder is leading
>>>>>5-0 with two draws at this time.
>>>>>
>>>>>Wonder if there is some tweaking I need to do?
>>>>
>>>>although it is along time ago, i think i remember christophe theron saying that
>>>>due to some kind of bug, chesstiger 15 plays better when moves/min is selected
>>>>rather than game in/min:
>>>>
>>>>the other easo could just be
>>>>
>>>>a) a statistical anomaly:
>>>>
>>>>b) the effect of he shredder book which is optimised for shredder whereas the
>>>>tiger book(chessbase)is only a general opening book made form a collection of
>>>>high quality games:
>>>>
>>>>i have found chesstiger 15 to be on par with shreder7
>>>
>>>
>>>
>>>I've changed the Tiger settings to Suicidal and to use the Shredder book. The
>>>funny thing is, when you select 128MB of hash, Tiger only loads 96? That's
>>>consistent on both PC's.
>>
>>
>>
>>1) I don't recommend the "Gambit suicidal" settings. Use the normal style or the
>>Gambit style for better results. Please note that if you are using CT15 inside
>>the ChessBase GUI, due to a bug in the CB stuff you will have to manually edit
>>the CT.INI file.
>>
>>2) Chess Tiger hash table must always be 12 times some power of two, so when you
>>select 128Mb (which is not 12 times some power of two), Chess Tiger
>>automatically uses the biggest amount that does not exceed what you asked for.
>>In this case it selects 96Mb.
>>
>>3) If you draw any conclusion after 5-0, my advice is that you should definitely
>>pick a different hobby. But I'm sure you know that already and that you are not
>>drawing any real conclusion so early, right? :)
>
>I am currently conducting a match in my (limited) spare time pitting Palm Chess
>Tiger 15 on my Sony Palm Clie 33 MHZ (but overclocked to 54 MHZ with a 1.5 MB
>Hash table) versus the Saitek RISC 2500 with 128K RAM.  Level is game in 10
>minutes, normal style for both the CT & SR.  SR has tournament book selected.
>
>Anyway, it started out with the Saitek Risc racing out to a 6 1/2 - 1/2 lead at
>the beginning -- mostly by finding crushing middle-game tactics.  Judging from
>those first 7 games, it would seemingly indicate that the poor Chess Tiger on my
>Sony was hopelessly outclassed.
>
>After  34 games the Saitek Risc is still leading - but now only by 18-16!
>
>I hope to eventually make it a 100 game match.

learning may explain the result.

If you draw any conclusion which program is better based only on the final
result of a match of 10000 games then my advice is that you should definitely
pick abother hobby.

one program can start by leading 20-0 and 20 draws but after the opponent starts
to win it can repeat its win every game and win the match 9900-100

Is the winner better when practically people do not play matchs of 10000 games
and practically the loser performs better against chess programs?


Uri



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