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Subject: Re: Mate in 4 explanation

Author: Tim Mirabile

Date: 13:13:22 10/08/97

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On October 08, 1997 at 14:18:45, Ed Schröder wrote:
>During this year I have done some experiments finding combinations
>faster. The idea: if the current game is a position and no moves
>played yet, extend *some* moves from the move list with 3 plies.
>
>I got wonderful solution times but if the algorithm failed a slow
>down of 50-100% was noticed. I finally rejected implementation of
>the idea because people would consider it as cheating.

Absolutely! :)  Unless you make it an option and turn it off by default.
 Otherwise it makes the whole point of running a test suite to try to
estimate playing strength in real games useless.  On the other hand,
isn't this what humans do when confronted with a "white to move and win"
position in a book of combinations?  You could say you've made your
program more "human-like" - it would find combinations easier from a
book (EPD file) than when playing a game. :)

(This is what spoils a book like Encyclopedia of Chess Middlegames for
me.  When there are chapter headings like Bishop sacrifices on h7/h2, it
makes it a bit too easy to guess the key move.)



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