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Subject: Re: Yace vs Aristarch (update)

Author: Günther Simon

Date: 02:45:38 04/30/05

Go up one level in this thread


On April 29, 2005 at 21:52:51, pavel wrote:

>On April 29, 2005 at 14:39:25, Dieter Buerssner wrote:
>
>>On April 28, 2005 at 22:07:52, pavel wrote:
>>
>>>Games per opening:
>>>http://www.pavs.org/ECO6.txt
>>
>>Pavel, did you try (at the yace prompt):
>>
>>cadiz_pgn yace_vs_aristarch.pgn opening_statistics.txt s
>>
>>Might be interesting (the file opening_statistics.txt that will be created).
>>
>>Cheers,
>>Dieter
>
>Dieter that's a really cool feature.
>What other nice hidden features are out there in YACE? :)
>
>http://www.pavs.org/opening_statistics.txt
>(6411 games)
>
>I didn't understand this:
>BXX:   +350   =197   -357   ( 49.61% in    904 games)
>
>Yace played this opening 904 times, how did it loose more than half of the games
>in this position? Isn't it suppose to "avoid" bad position leading to "loosing
>postions", learned from previous games?
>
>Or am i missing something?


IMHO you miss that Yace has only 50.26% totally against Aristarch with
White, thus 49.61% is only marginally off.
I see much more suspicious stats for it (only selected chunks > 150 games):

*Yace as White* (avg. 50.26%)
AXX:   +289   =185   -363   ( 45.58% in    837 games)
A1X:  +81    =59    -108   ( 44.56% in    248 games)

*Yace as Black* (avg. 41.20%
A01: +59    =130   -185   ( 33.16% in    374 games)
B1X:  +36    =31    -101   ( 30.65% in    168 games)
BXX:   +171   =126   -309   ( 38.61% in    606 games)

I guess one has to look closer into the exact lines of those openings.

BTW thanks for this interesting stuff Pavel :)

Guenther


>
>If you want I can send you the games, or print the opening stats for every 1000
>games.
>
>Cheers,
>pavs
>
>------------------------------------------------------------
>4/29/2005 9:56:32 PM :
>
>    Program                      Elo    +   -   Games   Score   Av.Op.  Draws
>
>  1 Aristarch 4.50             : 2515    7   7  6411    54.3 %   2485   24.2 %
>  2 Yace Paderborn             : 2485    7   7  6411    45.7 %   2515   24.2 %
>
>
>  1 Aristarch 4.50            : 2515  6411 (+2702,=1553,-2156), 54.3 %
>  2 Yace Paderborn            : 2485  6411 (+2156,=1553,-2702), 45.7 %
>------------------------------------------------------------



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