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Subject: Re: informant symbol values

Author: Dave Gomboc

Date: 23:15:59 05/04/98

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On May 03, 1998 at 03:17:45, Andrew Templeton wrote:

>   I would like to write a program that cleans up the analysis added to
>a PGN game by Rebel9 to make it easier to read. Assuming that most chess
>programs use 1.00 as the value of a pawn (at least I believe this is
>true) what do you think should be the value for the following chess
>symbols:
>
>equality  (=)
>0.00
>
>slight advantage (+/= or =/+)
>?
>
>moderate advantage (+/- or -/+)
>?
>
>decisive advantage (+- or -+)
>?

From my experience, I have found the following values to be pretty good:

equality        slight edge        clear advantage
decisive/winning
0.0             0.30 - 0.35        0.80   -   0.85       1.30    -
1.35

Of course, the values will vary somewhat from program to program.  You
really have to experiment with the particular software you are using.

It is important to remember that it is just a computer's opinion.  I
have a position in my home preparation where the machine thinks the
score is 1.45 or so in Black's favour, but a GM assesses the position as
a clear advantage to white! (My opinion is that the GM is closer to the
truth in the particular case, the software doesn't appreciate the value
of a passed d-pawn on the 6th rank in the middlegame. :)

Dave Gomboc
CFC 2129



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