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Subject: Re: Engines valutation question

Author: morphy

Date: 04:10:59 08/03/04

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On August 03, 2004 at 06:42:02, Uri Blass wrote:

>On August 03, 2004 at 06:08:16, morphy wrote:
>
>>On August 03, 2004 at 05:48:15, Gerd Isenberg wrote:
>>
>>>On August 03, 2004 at 04:54:11, morphy wrote:
>>>
>>>>Why the valutation is always referred to the material advantage (where a pawn in
>>>>more is the unit) and we can't have a valutation in tems of percentage of
>>>>probability for winning and drawing?
>>>
>>>Maybe you find some answers at R. Scharnagl's SMIRF sites:
>>>
>>>http://www.chessbox.de/Compu/schachwert1_e.html
>>>and following.
>>
>>Thank you very much, I'm analyzing the site...
>>I don't understand the Reply by Uri Blass, I'm not an expert programmer but i
>>want begin to understand some principles and I asked some doubt to you.
>
>The point is that it is more easy to have evaluation in pawns then in
>probabilities.
>
>It is hard to evaluate probabilities based on the position(espacially in the
>middle game).
>
>material is more easy and later if you want to consider probability you can give
>bonus for simplification of the position and to evaluate material advantage as
>worth more when there is less pieces.
>
>I agree that probabilities in theory are better but practically it is harder to
>write code that only deals with probabilities.
>
>Uri

I believe that for approach a valutation in terms of probabilities intestead of
bonus and/or material advantage, simlpy by ratio of White's advantages with
Black's, instead than difference of them. Why not any ratio?



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