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Subject: Re: Chess Tiger 14.9 on Palm Vx - Yace on 486dx-50 5.5-6.5

Author: Peter Berger

Date: 08:32:16 05/02/02

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On May 02, 2002 at 00:57:02, Christophe Theron wrote:

>On May 01, 2002 at 19:01:07, Peter Berger wrote:
>
>>The games were played with 30 minutes sudden death (blitz) time control; match
>>was scheduled for 12 games.
>>
>>Yace used 2.5 MB for hashtables, no tablebases and a little opening book. The
>>Palm Vx has been overclocked with AfterBurner - Tiger displays Speed index of
>>1.10 for this device.
>>
>>The hardware advantage for Yace in this match should have been somewhere around
>>factor 4-6.
>
>
>
>Thanks for playing the games!
>
>Any idea of the rating of Yace on this computer?
>
>
>
>    Christophe

A good starting point for calculation would be the list of Andreas Herrmann IMHO
( great work):

http://www.wbholmes.de/elo/eloceleron.txt

For adjusting to SSDF niveau engines Crafty, and Nimzo2000b ( similar in
strength to Nimzo 7.32 and Nimzo 8 ) can be used.

After some more crude maths from my side one should expect at least 2230-2250
SSDF on 486dx50 for Yace I think - so a very good match result for the little
Tiger.

The match results still suffer from the little number of games played of course.
But my personal impression is that Yace doesn't really play at this level on the
486 - battle against Tiger was open and there weren't any lucky games; it felt
like equal forces battling it out all the time( except of the first game). I
suspect Yace is weaker than the expected value on the slow hardware. It missed
quite a lot tactically and suffered from the low depths it reached very much,
especially in the endgame.

I think I should add a calibration partner to the "contest" soon - this one
looks quite useful:

82 Genius 4.0 DOS 486/50-66 MHz            2266   23   -23   900   49%  2270

In fact I was much impressed by Comet B42's play in the 20 games against the
Tiger so far - it might well be simply much stronger than expected on this slow
hardware. Yace felt weaker in comparison in its match.

Lots of guesswork - don't slaugter me, lady and guys :).
Peter



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