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Subject: Re: Avoid move position - testing repetitions

Author: Uri Blass

Date: 02:28:42 01/10/03

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On January 10, 2003 at 05:17:53, Frank Phillips wrote:

>On January 09, 2003 at 21:36:57, Dieter Buerssner wrote:
>
>>On January 09, 2003 at 13:30:37, Frank Phillips wrote:
>>
>>
>>>[...] In which case has anyone got any good position for testing
>>>repetition detection.
>>
>>
>>From SOS-Yace IPCCC, 2001
>>
>>[D] 8/p1rR4/4P3/5pp1/2kp4/P3PK2/8/8 b - - 1 44
>>
>>I think it is a draw here. But difficult to find. After 44...Rc6 45. e7 Re6 46.
>>exd4 Kd3 47. d5 it is much easier.
>>
>>[D] 8/p2RP3/4r3/3P1pp1/8/P2k1K2/8/8 b - - 0 47
>>
>>The various positions in between might be interesting to test.
>>
>>Regards,
>>Dieter
>
>
>I get no indication of a draw even in the second (easy) position.  I tried
>messing with extensions and the fifty move counter (changing it to a much
>smaller number), but still no joy.....
>
>Is this a draw by three fold repetition?  (There are quite a few pawn moves.).
>
>Frank

It is a simple perpetual check after Re3+ and Kf2.
I have no problem to see it and the same for my engine.

Uri



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