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Subject: Re: Shredder wins in Graz after controversy

Author: Uri Blass

Date: 11:18:33 12/10/03

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On December 10, 2003 at 13:25:39, Sandro Necchi wrote:

>On December 09, 2003 at 19:07:08, Uri Blass wrote:
>
>>On December 09, 2003 at 17:38:11, Frank Phillips wrote:
>>
>>>On December 09, 2003 at 16:45:37, Sandro Necchi wrote:
>>>
>>>>On December 09, 2003 at 15:14:00, Frank Phillips wrote:
>>>>
>>>>>On December 09, 2003 at 14:45:25, Gian-Carlo Pascutto wrote:
>>>>>
>>>>>>On December 09, 2003 at 10:16:51, Frank Phillips wrote:
>>>>>>
>>>>>>>This is too subtle for me.  It is an event between machines with the operator
>>>>>>>acting as a go between (a mistake in my view).  The machine said draw, >therefore the operator must claim the draw.  As far as I can see it just
>>>>>>>another 'move' indicated by the machine and the operator has no right to move
>>>>>>>for the machine.
>>>>>>
>>>>>>By the same reasoning, the machine claimed the draw incorrectly, so
>>>>>>the operator has no right to claim the draw correctly, so he had no choice
>>>>>>but to play on (or resign).
>>>>>>
>>>>>>QED
>>>>>>
>>>>>>--
>>>>>>GCP
>>>>>
>>>>>I do not understand what you are saying.
>>>>>
>>>>>My point is based on the following:
>>>>>
>>>>>1.The contest was between machines.
>>>>
>>>>No, between chess engines.
>>>
>>>;-)
>>>
>>>>
>>>>>2.The machine in question was the entity that was the engine plus the chessbase
>>>>>GUI.
>>>>
>>>>OK, but the engine was playing, not the chess GUI.
>>>
>>>This where we part company..... (It chose book moves, I believe.).
>>>
>>>
>>>>
>>>>>3.It would have been better if the machines played without human interference,
>>>>>but failing this the operator should not have been able to influenece the
>>>>>result.
>>>>
>>>>This was allowed as the operator should have been the one to ask the TD to be
>>>>allowed to resign...see Darsen post which is complete...
>>>>
>>>>>4.The machine claimed a draw (ie its 'move' was draw).
>>>>
>>>>No, the machine did not claimed a draw. The GUI advised that there was a 3-moves
>>>>repetition. This is not a draw claim.
>>>>Since the programmer can set the draw value in it's program. If the setting is
>>>>accept a draw only when the score is -50, than the GUI showing a 3 moves
>>>>repetition would be ignored by the engine...so this is not a draw claim, but
>>>>only a info display...
>>>>It is therefore wrong to claim that an info advising a 3 moves repetions is an
>>>>automatic draw. The program should state clearly "I am going to play "..." which
>>>>will draw the game according to FIDE rule..."
>
>Hi,
>
>>
>>As far as I know no single program does it according to the fide rules.
>
>Correct, so do you think it is correct to automatically claim a draw if the
>score goes to 0.00 or on a 3-fold repetition?
>I think that what we learned here is that we need to improve this to avoid
>different opinions on this matter.
>
>To me this means to me that the programs are not able to play chess as they are
>not in accordance with FIDE rules. This needs to be changed.
>Also if is OFFENSIVE for an opponent that a program continuo to play when the
>score is lower than -10.

It is the right of the opponent not to resign.
It is the programmer of the jonny who did not tell it to resign.


>I think this value is already very high as normally with -3 the games are 95%
>lost already.
>I really do not believe one can play against Kasparov at -10 without him leaving
>the room...

kasparov may be angry but he will have to finish the game correctly if he wants
to win.

>
>>
>>Even my movei does it by claiming a draw together with the move that it is going
>>to play.
>>
>>No problem with changing the rules of computer chess that are not the fide rules
>>but you should tell it to the participants before the championship and not after
>>it.
>
>Correct, but if top level TD agree with the decision that was taken this means
>to me that the situation was at least not fully clear. I believe that it was the
>correct one and to be honest we would not have liked at all to win a
>Championship "forcing" Fritz to get a draw in the same situation. I have been
>reported that the Fritz team did the same thing as they made no objection. So I
>must admit they are quite sportive and they did deserve the playoff also from
>their sportive attitude too...

The point is that decisions should be the same for all the games.
If shredder-Junior was drawn only by claim of 3 time repetition and not correct
draw claim then the same should be for other games.

>
>>
>>I wonder what happened in other drawn games like Diep-falcon.
>>
>>Did one of the engines in the game claimed the draw correctly based on your
>>definition?
>
>Did I say the opposite?
>But here "someone" said the we should have asked for the draw because of the
>3-fold repetition which is NOT AN AUTOMATIC DRAW and the programs should handle
>that correctly and not the GUI, which can only give info and advise the opening
>moves...

It was a draw if you follow the rules that were used  in the other games of the
tournament.

Deciding that it is the choice of the operator if to claim a draw or not to do
it is not acceptable.

Uri



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