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Subject: Re: Programming Issue: When & how should the engine claim a draw or res

Author: Gerd Isenberg

Date: 14:20:14 11/30/03

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On November 30, 2003 at 16:37:17, Dieter Buerssner wrote:

>On November 30, 2003 at 13:57:19, Robert Hyatt wrote:
>
>>On November 30, 2003 at 13:22:20, Dieter Buerssner wrote:
>>>Note, we first see the move, and then the info: "game drawn", which can easily
>>>be interpreted as not correct.
>>
>>No it can't.  Because to play a game of chess, you are required to _move_ the
>>pieces, and _press_ the clock.  That is why humans have "blind rules" for a
>>player that can't see.  And the rules explain this very clearly.  If the
>>draw is a repetition before the move is played,
>
>I am not sure, you read my post carefully. Neither do I find any indication in
>the FIDE chess rules, that would support your point. I looked at:
>http://www.fide.com/official/handbook.asp?level=EE101
>
>There I find:
>---
>9.2  The game is drawn, upon a correct claim by the player having the move, when
>the same position, for at least the third time (not necessarily by sequential
>repetition of moves)
>
>a) is about to appear, if he first writes his move on his scoresheet and
>declares to the arbiter his intention to make this move, or
>
>b) has just appeared, and the player claiming the draw has the move.


Hi Dieter,

Isn't b) redundant?

I mean if you have already a 3-fold repetition where your opponont didn't claim
a draw before, doesn't that imply that you can force another 3-fold repetition?

A i see, a rule for humans ;-)

I have only implemented rule a).

Cheers,
Gerd

<snip>



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