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Subject: Re: Does your program understand castling/en passant rights on 3x repetition

Author: Manfred Schubert

Date: 07:52:43 02/27/00

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>>I do not know about cases when it practically happened in games.
>I disagree. These are basic chess rules and if the program does not recognize
>this, then it is not properly compliant to the game. How is 'low probability'
>going to justify a program declaring a position drawn when it is not? I don't
>think one can go about choosing which rules of chess the program will respect or
>not. In any case, I have seen a case with two masters playing in which one
>player was given a warning for declaring a draw improperly.
>                                       Albert Silver

There is a difference between detecting it in the search tree (which is not very
important because it is not very probable) and claiming draw too early in the
move list (where there is enough time to apply the correct rules).


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