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Subject: Re: Draw by treefold repetition

Author: Kolss

Date: 08:55:43 03/08/06

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On March 08, 2006 at 02:09:13, Mike S. wrote:

>On March 08, 2006 at 00:47:39, Pedro Castro wrote:
>
>>[D]7Q/4bk1p/p2r2p1/1p3p2/1P6/P4P2/6PP/5K2 b - - 0 41
>>
>>41. .. h5
>>42. Qh7+ Kf6
>>43. Qh8+ Kf7
>>44. Qh7+ Kf6
>>45. Qh8+ kf7
>>
>>1/2 - 1/2
>>
>>Is it correct?
>>
>>My doubt is if it is necessary to consider that in the movement 41.. h5 is a
>>possibility to eat ep and therefore a move more would be needed take treefold
>>repetition.
>
>There is no white pawn on g5, therefore no e.p. possible! The draw is correct
>here. *With* a wp g5, Fritz(8) does not claim draw after 45.Kf7 but after
>46.Qh7+. So, the difference of the position after 41...h5 due to the e.p.
>capturing possibility is correctly recognized (but not if there is only a
>"ghost" of an opponent's pawn... :-) ).
>
>[Event "?"]
>[Site "?"]
>[Date "????.??.??"]
>[Round "?"]
>[White "New game"]
>[Black "Test"]
>[Result "1/2-1/2"]
>[SetUp "1"]
>[FEN "7Q/4bk1p/p2r2p1/1p3pP1/1P6/P4P2/6PP/5K2 b - - 0 41"]
>[PlyCount "10"]
>
>41... h5 42. Qh7+ Ke6 43. Qh8 Kf7 44. Qh7+ Ke6 45. Qh8 Kf7 46. Qh7+ 1/2-1/2
>
>Regards,
>M.Scheidl


Hehe,

and which GUI gets this one correct?

[D]7Q/4bk1p/p2r2p1/1p3pP1/1P5K/P4P2/6PP/8 b - - 0 1

1. ... h5
2. Qh7+ Kf8
3. Qh8+ Kf7
4. Qh7+ Kf8
5. Qh8+ Kf7
draw by three-fold repetition!

Best regards - Munjong.



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