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Subject: Re: Good idea for a correspondence chess program?

Author: David Rasmussen

Date: 01:56:25 01/10/03

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On January 09, 2003 at 14:17:06, Stan Arts wrote:

>Hello,
>
>I often read computerprograms are so bad at correspondence chess. That would
>make sence, since they run up a very steep wall after about 10-15 full moves of
>analysis.
>
>Wouldn´t it be possible however to write a program, that could spend it´s hours/
>days of time for a move in a different way, searching much shorter, say just 5
>minutes or less per move and then automaticly "play" (like in normal games)
>lines against itself to great depths, sometimes discovering refutations, and
>then disregarding this move and try to resolve other moves this way.
>

It is certainly possible to make a program with a "much" better branching factor
(meaning it will reach the "wall" at a higher depth), by making the program less
immediately tactically aware. That is, most programs go for discovering tactics
as soon as possible (which is very hard, and it is a non-trivial subject). But
one could make a program that wouldn't a very fast tactics finder (less
extensions specifically, but also a number of reductions), but which would have
a lower than usual branching factor, so that running for a number of days would
make it search deeper than a "normal" chess engine, but also be tactically
reasonably safe up to that depth. In fact, a personality could probably be
defined for this for programs that have a personality feature: Minimize
extensions, increase selectivity (certain kinds anyway)

/David



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