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Subject: Re: When do chessbase engines resign?

Author: Terry Ripple

Date: 14:17:31 08/10/00

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On August 10, 2000 at 16:26:09, Uri Blass wrote:

>On August 10, 2000 at 15:53:32, Terry Ripple wrote:
>
>>On August 10, 2000 at 10:06:27, Uri Blass wrote:
>>
>>>On August 10, 2000 at 09:57:15, Ulrich Tuerke wrote:
>>>
>>>>On August 10, 2000 at 09:51:16, Uri Blass wrote:
>>>>
>>>>>The same engine can sometimes resign in engine-engine games inspite of not
>>>>>seeing a forced mate and sometimes continue and not resign inspite of seeing a
>>>>>forced mate in engine-engine games.
>>>>>
>>>>>Can somebody tell me what are the rules that engines follow when they decide to
>>>>>resign?
>>>>>
>>>>>Uri

Hi Uri,
In my 60 min./games, Fritz6 Light (old) didn't lose 1 game on time out of 12
played so far, so it will be interesting if Fritz loses any on time with this
time control!

Terry
>>>>

>>>>It is not the engine which resigns but the GUI.
>>>>In the GUI, you can adjust "early", "late" or "never" resign, whatever that
>>>>means.
>>>>I think that I have observed when both engines agree in reporting a large value
>>>>for the score for the last couple of moves, the the GUI makes its decision.
>>>>
>>>>I guess that only Mathias Feist knows the exact criteria.
>>>>
>>>>Uli
>>>
>>>I did not tell it nothing under hiarcs7.32 GUI and
>>>I found that in part of the cases the engines contimue till mate and in part of
>>>the cases resign before seeing evaluation of mate.
>>>
>>>Uri
>>
>>Hi Uri,
>>I also perform my matches with the Hiarcs 7.32 GUI. I have it set to "resign"
>>late in the game. I don't have this problem that you mentioned! I been
>>performing hundreds of test games between Hiarcs732 and Fritz6 old and it seems
>>that either engine will resign when there is no hope in the position, or will
>>ask for a draw when the conditions call for an obvious draw which then the draw
>>offer will be accepted!
>>
>>Regards,Terry
>
>I will check my setting but I did not change my setting.
>
>I do not see a clear rule about resigning and it sometimes resigns in a hopeless
>positionand sometimes does not resign in hopeless position.
>
>I also think that part of the hopeless position are not hopeless in blitz
>because of the clock.
>In one game Hiarcs resigned in KRPP vs KRNB when it is not clear if Fritz can
>win it on time trouble.
>Fritz6light also enjoyed from few draws that Hiarcs agree when hiarcs had good
>chances to win on time by playing.
>
>The result after 400 blitz games is 169:155(76 draws) for Fritz6 light
>Fritz6light lost 9 games out of 400 on time.
>
>Both sides won e4 f6 with black and hiarcs won e4 f5 with black and it proves
>that the opening is not very important.
>
>I played all the possible opening of 2 plies when white begins with one of the
>pawns a-e.
>
>Uri



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