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Subject: Re: No Need For Computers To Evaluate Chess Positions!

Author: Mike Hood

Date: 06:10:04 07/01/03

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On July 01, 2003 at 06:45:09, Thorsten Czub wrote:

>On July 01, 2003 at 06:03:07, Christophe Drieu wrote:
>
>>On July 01, 2003 at 05:41:31, Graham Laight wrote:
>>
>>>When a GM is contemplating a move, he doesn't say to himself, "Hmmmmm. I would
>>>give the resulting position a score of 1.723".
>>>
>>>Such an evaluation is nonsense anyway. There should properly be only 3
>>>evaluations:
>>>
>>>1. Winning position
>>>
>>>2. Drawing position
>>>
>>>3. Losing position
>>>
>>>It would be nice if a program could work as follows:
>>>
>>>"nb5. This position contains a possible bishop trap".
>>>
>>>"nd5. This puts more pressure on the opponent's king"
>>>
>>>"Opponent classification: bishop trap success rate = 25%"
>>>
>>>"Opponent classification: king attack success rate = 15%"
>>>
>>>"Choice = nb5".
>>>
>>>-g
>>Rebel 12 (DOS) can give you some informations like that.
>Chess System Tal (dos) is doing this.

Yes... a few years ago Chris Whittington made some very interesting suggestions
along the lines of the original post in this thread. To paraphrase his words
from memory: "A move should be chosen by static evaluation of the current
position based on positional considerations. Maybe a short search of three or
four plies is necessary to avoid obvious blunders, but the evaluation should not
be based on a depth search". Chris's ideas sounded very exciting when I first
read them, and I have to admit that I was disappointed that the program based on
these ideas, Chess System Tal, didn't perform as well as the deep searching bean
counters. Maybe more research (or rather experimentation) should be done along
this path.



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