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Subject: Re: mate-in-13

Author: John Merlino

Date: 13:25:02 04/16/05

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On April 16, 2005 at 16:19:24, F. Huber wrote:

>On April 16, 2005 at 16:11:13, John Merlino wrote:
>
>>On April 16, 2005 at 15:48:43, F. Huber wrote:
>>
>>>On April 16, 2005 at 15:02:50, Mike Byrne wrote:
>>>
>>>>while searching for info on Ruffian - found this old problem that Ruffian 1.0.1
>>>>solved very quickly
>>>>
>>>>Crafty 19.20
>>>>Dual Opterons
>>>>
>>>>White(1): [d]8/8/pp6/2pp2p1/3p2Pk/3P1K1P/5PP1/8 b - - 0 1
>>>
>>>The fastest ´brute force´ mate for ChestUCI in my collection so far! :-)
>>>
>>>ChestUCI Ver.4.1:
>>>CPU: Celeron 400MHz
>>>FEN: 8/8/pp6/2pp2p1/3p2Pk/3P1K1P/5PP1/8 b - -
>>>Search for Mate in -13 ...  (Hash=64MB)
>>>Search completed ...  (Time=51.24s)
>>>Mate in -13 found !  (00:51)
>>>Pa6-a5 --> 1.Ke2 c4 2.Kf1 c3 3.Kg1 c2 4.Kh2 c1Q 5.g3#
>>>Pb6-b5 --> 1.Ke2 c4 2.Kf1 c3 3.Kg1 c2 4.Kh2 c1Q 5.g3#
>>>2 Solutions  (Mate in -5)
>>>Pc5-c4 --> 1.Ke2 cxd3+ 2.Kxd3 b5 3.Ke2 d3+ 4.Kxd3 d4 5.Ke2 d3+ 6.Kxd3 b4 7.Ke2
>>>b3 8.Kf1 b2 9.Kg1 b1Q+ 10.Kh2 Qg1+ 11.Kxg1 a5 12.Kh2 a4 13.g3#
>>>1 Solution  (Mate in -13)
>>>
>>>Regards,
>>>Franz.
>>
>>An interesting test. In the CM GUI, you can't search for a brute force mate for
>>the side that is NOT on the move, so first I forced 1...c4. Yes, I know it's
>>cheating.... :-)
>>
>>It then took CM9_R1 0:12 to find the Mate in 13 in brute force mode.
>>
>>jm
>
>WOW, interesting news: John Merlino is _also_ cheating! :-)))
>
>Regards,
>Franz.

That's news??? Then I've been hiding it very well all these years. :-)

jm



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