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Subject: Re: BUG in Shredder 9.1 - 50 move Rules

Author: Steve Glanzfeld

Date: 09:00:52 07/22/05

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On July 21, 2005 at 14:51:20, Günther Simon wrote:

>On July 21, 2005 at 06:12:08, Steve Glanzfeld wrote:
>>Most chess programs do not claim the 50-draw before making the 50th move (100th
>>ply), or by putting the move into the notation only. They move and then claim
>>although at that moment, they do not have the move. It has always been like
>>this, although it's not FIDE compliant.

>That's wrong! Chess programs never ever claimed 50 moves rule after
>ply 100 _with_ a pawn move or a hitting move.

Of course not. The above was a general comment about how progs handle such
claims. FIDE says you have to claim while it's your turn still. Progs make a
move and claim after it, when it's the opponent's turn again, when it was the
program's move which created the drawn situation.

I think you missed the last paragraph of my posting. Of course I noticed
claiming draw with a pawn move, is a bug. I wrote:

But they main thing here is: There was no 50 moves draw in this game. The last
move should have been a no-pawn no-capture move, but it wasn't. The pawn move
restarts the 50 move counter.

Steve



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