Position Scores and Evaluation

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Wolverines78

Could someone please explain how to determine a given numerical position score and its equivalent in symbolic terms?

Put another way, for each symbol evaluation of a position:

=, +/=, +/-, etc.

how does this translate into numerical positional score:

1.0, .58, etc.

Obviously a score of 0.0 would be an equal evaluation (=), but what are the parameters of the symbols and their numerical equivalent?

Thanks.

Shivsky

Many engines/programs have different mappings, but a decent approximation of the cutoffs would be =>

0.30  maps to = (white's 1st move advantage)

0.60 maps to +/=  : Slight advantage for white

0.90 maps to +/-  : Clear advantage for white

1.30 and above maps to +- : White is winning

Depending on the engine's optimism, things could vary a lot as far +- (winning) evaluation scores.

Caveat : Remember => this is a computer's evaluation, not a human's. Try playing a frisky gambit and you'd think White/Black are winning on moves 2-3. :)

rrrttt

I agree

Wolverines78
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