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Subject: Re: Is the crafty approach to pondering the right one?+suggestion

Author: blass uri

Date: 11:16:07 05/24/00

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On May 24, 2000 at 10:28:57, Oliver Roese wrote:

>Hi all!
>
>This question is about pondering during the opponents time...
>Crafty does the following:
>It predicts the oppononts move, assuming "optimal" play and then starts to
>work until the opponent moves.
>If it predicts the opponents move correctly it has a great edge, otherwise
>only some hashtableentries.
>If it wouldnt predict the opponents move it would gain a small contribution to
>_every_ move.
>Obviously the better it predicts the opponents move, the better is the first
>method.
>From my experience as a mere chessplayer i would say the following:
>-Predicting the opponents move is very difficult even in games of the
>highest value (disregarding trivial cases and extraordinary circumstances).

Predicting the opponent moves is not very difficult.
It happens often.
There were cases when computer program predicted 10 of my moves in a row.

I agree that if the human opponent is using a long time for one move(for example
more than 10 minutes at tournament time control) it may be better to stop
analyzing the reply for the expected move and start analyzing the second best
move and after it the reply for the second best move but I do not think that
this idea is very important.

Another possible idea is if you discover by analyzing the predicted move that
the predicted move may be a mistake(an extreme example is if the evaluation is
mate foryourself after the predicted move) there is no point in continuing to
analyze the predicted move and it is better to start to analyze a different
move.

There may be other cases when it is better not to analyze the predicted move but
I think that in most of the cases analyzing the predicted move is the best way
to use the time.


Uri



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