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Subject: Re: Sandro scores - another view

Author: Marc Lacrosse

Date: 13:42:29 09/15/05

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On September 15, 2005 at 13:58:54, Thomas Logan wrote:

>That is Sandro setting columbus egg vs Fruit
>
>last 3 games 2.5 points
>

>score thus far
>
>THOMAS-KBZT8WLT, 120'/40+60'/20+30'  0
>
>                123456
>1   Shredder 9  011½11  4.5/6
>2   Fruit 2.1   100½00  1.5/6
>
>classical time control 256m hash 3,4,5 piece endgame tables - 16m table hash
>shredder 9.ctg and Fruit_ASv3.ctg & small_book.bin, learning, no pondering
>optomised books,windows xp home a64 3400
>
>Tom

Hi Tom,

I have had a lot of tests with Sandro's Columbus Egg (at blitz time control) and
I repeat I find it to be a very interesting setting.

But i am less convinced than ever regarding the eventual overall superiority of
Columbus Egg over shredder default settings.

Presenting only a few games against Fruit default configuration gives only a
partial evaluation.

See what happened in my recent games (all involve Fruit WCC'2005)

Both playing with the same neutral book, I had a first match between S9CE and
Fruit default config.

Result was +11 =10 -9 for Fruit (53.3%).

I then adapted fruit's UCI parameters to build an anti-Sandro config.

This Fruit anti-Sandro won +14 =7 -9 against S9 columbus egg (58.3%).

But this anti-sandro config was much worse against shredder 9 default config and
also against other opponents.

And the same was true for Sandro's config against other opponents (among them :
CM10 Berean, Ktulu 7a, Ruffian 210, Ruffian 105, Spike 1.0a, SlowChess blitz
WV2)

After 850 games I have :
Shredder 9 : 2718 +/- 41
Fruit WCCC : 2717 +/- 42
Fruit WCCC anti-CE : 2703 +/- 59
Shredder Columbus Egg : 2674 +/- 58

So my results do not confirm yours in my testing conditions (same book for all
and  short timing).

Have a look at CEGT tests tomorrow : you will have a big surprise at
intermediate time controls ...

Regards

Marc








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