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

Author: Gerd Isenberg

Date: 16:04:28 11/30/03

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<snip>
>>>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?
>
>No
>
>Here is a game that I played on force mode under winboard when my engine was
>watching
>
>[Event "Edited game"]
>[Site "F3K9V7"]
>[Date "2003.12.01"]
>[Round "-"]
>[White "-"]
>[Black "-"]
>[Result "1/2-1/2"]
>
>1. Nf3 Nf6 2. Ng1 Ng8 3. Nh3 Nh6 4. Ng1 Ng8
>{Movei-> Draw by repetition} 1/2-1/2

ah yes, i see. Wrong implication!
Have to check my implementation ;-)
Thanks for pointing that out.

Gerd

<snip>



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