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Subject: Re: Here's a position I call "Somebody's in trouble" -- Your prog says what?

Author: Uri Blass

Date: 02:20:03 02/07/02

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On February 07, 2002 at 04:37:07, Scott Gasch wrote:

>I don't understand; it's a legal chess position -- any program should be able to
>handle it...

You are wrong

There are programs that were not build to analyze legal positions but to play
games.

A program can safely assume that the number of queens of one side is at most 8
because it is going to never see a position when one side has 9 queens in it's
search.

Even if the opponent is very weak the program may mate a lot before it gets 9
queens on the board.

I doubt if it is possible to convince the program to promote all it's pawns
because it is usually going to find a faster mate without promoting most of the
pawns.

It also seems safe to assume that there
are no more than 8 rooks and no more than 8 bishops or knights if the target is
only to play games and not to analyze.

Uri



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