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Subject: Re: Emulating Human Chess Using Chess-Playing Programs

Author: Mark Young

Date: 19:37:18 01/01/04

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On January 01, 2004 at 20:55:49, Bob Durrett wrote:

>
>Suppose someone wanted to produce a chess-playing program which emulated the
>play of a human rated 1200 to 2200.
>
>Rhetorical Question:  "How would one go about doing that?"
>
>The first step must surely be to produce a high-fidelity model of the thing that
>is to be emulated, in this case the human amateur chessplayer, or at least to
>model the output of that thing.
>
>Perhaps it would be sufficient to produce a "black box" which outputs moves
>which are ***statistically*** similar to those observed from the human amateurs.
> In other words, a "black box" chess-playing program which outputs moves having
>the same statistical properties as the outputs of the thing being modelled [the
>amateur chessplayer] might be sufficient.
>
>This could get very involved, but consider one simple example:
>
>Perhaps the two most dominant features of the moves of "the thing to be
>modelled" is the high number of tactical blunders per game and the high number
>of missed tactical opportunities per game.  These two things could be evaluated
>statistically with measured performance rating as a parameter.
>
>To correctly emulate these two items, it would be necessary that the "character"
>of these be the same.  In other words, Turing's Principle needs to come into
>play.  The "tactical blunders" and "missed tactical opportunities" need to be
>essentially indistinguishable from those produced by "the thing to be modelled."
>
>The same would have to apply to all statistically significant properties of the
>output [i.e. the moves] of "the thing to be modelled" [i.e. the human amateur
>chessplayer].
>
>Does this sound right?
>
>Has any chess software tried to do this?
>
>Bob D.


Chessmaster and Chessbase programs like Fritz and Shredder try to do this. In
Fritz and Shredder you can play a rated game against the program with it playing
at a certain elo level.

I don't know how accrate the program plays to the programmed elo level, but in
Fritz and Shredder it does make the programs very beatable when set to a level
below 2000 elo.



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