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Subject: Re: I can't believe in these results. Comments please!

Author: Dieter Buerssner

Date: 22:45:45 01/29/01

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On January 29, 2001 at 23:13:42, Aloisio Ponti Lopes wrote:

>Testing Yace 0.99 under ERT and under UCI (Shredder 5 GUI):
>
>(24 games match, bullet 1 minute KO, 16 MB hash for each engine)
>
>Shredder5-Yace 23:1 !!! (UCI interface)
>Gambit Tiger - Yace 14:10 (ERT interface)

I do not expect Yace to win against Shredder, but this result looks a bit
extreme. OTOH the result against Gambit Tiger looks very nice.

>Although 24 games mean nothing, that is a great difference in score. It seems
>that Yace is loosing most of the games under UCI by being flagged. Is this a
>winboard-adapter issue?

I have tested Yace as a WB engine under Shredder for a few games, and did not
see any losses on time. Please make sure, to turn logging off under S5 for Yace
as WB engine, especially for such short time controls. I have seen, that I miss
some time from the internal bookkeeping compared to the time synchronization
command sent by Shredder (something, that is also seen under other GUIs, and
that can depend on "multi-media"-settings, animation of moves, etc.) This may
explain the losses on time. I think, I have read here, that ERT/ChessPartner
gives some bonus time to the engine, so that this cannot happen.
I believe, the "new" should not be responsible for such a result.

I am not too interested in looking too deep inside all those WB-matters for
Shredder anymore, because I have implemented the UCI interface, and there is no
need anymore to run Yace under Shredder as a WB-engine. Note however, that
version 0.23 is not UCI compliant. You have to download a new version from
Mogens site (which currently seems to be down). He has set up an alternative at
http://mogens_72.tripod.com/

Regards,
Dieter



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