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Subject: Re: About draws and chessprograms - a chessplayer's view

Author: Peter Berger

Date: 02:10:24 04/29/01

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On April 29, 2001 at 00:59:57, Robert Hyatt wrote:

>On April 28, 2001 at 16:41:23, Peter Berger wrote:
>
<snip>
>
>I disagree.  Crafty can't "move pieces" on a real board.

This isn't important here IMHO - Crafty understands the concept of a move very
well .

  But in any case,
>I have never seen the rule state that you can _not_ make the move on the board.
>The rule simply has always been that you must claim the draw on _your_ time.
>Then the arbiter confirms the repetition.  In the case of computers, that is
>obviously not necessary, but crafty says:
>
>"my move is 49.  Rc8+
>
>"The game is a draw by repetition"
>
>then it waits for whatever happens next...
>
>I don't see how a computer could do it any differently.

It could say :

"The game is a draw by repetition"

In case the position on the board is a 3rd repetition it should say nothing else
.

In case the 3rd repetition position will be reached by a certain move it could
say :

" I intend to play 49. Rc8+ and claim draw by repetition ."

That ICC and WinBoard/XBoard currently don't support doing it like this doesn't
mean it can't be done at all . An enhancement of the WinBoard protocol adding a
"claimdraw" as Miguel A. Ballicora suggested would be a good start .

>
>I have seen that scenario played in major WC type events.  I once watched
>Korchnoi do exactly that in a US Open game...  He made the move on the board,
>wrote it down, claimed a draw, and got the arbiter...

I don't get your point here - so Korchnoi did wrong ..; the rule explains
exactly how it should be done .

pete



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