Author: Drexel,Michael
Date: 14:24:33 01/03/05
Go up one level in this thread
On January 03, 2005 at 16:30:17, F. Huber wrote: >On January 03, 2005 at 16:05:32, Drexel,Michael wrote: > >>On January 03, 2005 at 15:53:19, F. Huber wrote: >> >>>On January 03, 2005 at 14:47:02, Drexel,Michael wrote: >>> >>>>No, but this mate in 21 is AFAIK still not solved by a computer program >>>> >>>>:-) >>>> >>>>[D]8/8/8/8/8/3Q4/pp1KPPP1/k6n w - - 0 1 >>>> >>>>Michael >>> >>>I´m really very sorry, Michael, but I have to disappoint you! ;-) >>> >>>Here´s ChestUCI´s solution for this ´unsolved´ mate in 21: >>> >>>ChestUCI Ver.3.7: >>>CPU: Celeron 400MHz >>>FEN: 8/8/8/8/8/3Q4/pp1KPPP1/k6n w - - >>>Suche nach Spezial-Matt [C0/K3/P2/X7] in 21 ... (Hash=64MB) >>> 21 00:43 2.565.559 95.515 +M21 1.Dd4 >>>Suche abgeschlossen ... (Zeit=43.23s) >>>Matt in 21 gefunden ! (1 Lösung in 00:43) >>> 21/21 00:43 4.234.979 97.963 +M21 1.Dd4 Kb1 2.De4+ Ka1 3.De5 Kb1 4.Df5+ Ka1 >>>5.Df6 Kb1 6.Dg6+ Ka1 7.Dg7 Kb1 8.Dh7+ Ka1 9.Dh8 Sxf2 10.Kc2 Sd1 11.Kb3 Kb1 >>>12.Dh7+ Ka1 13.Dg7 Kb1 14.Dg6+ Ka1 15.Df6 Kb1 16.Df5+ Ka1 17.De5 Kb1 18.De4+ Ka1 >>>19.Dd4 Sc3 20.Dxc3 Kb1 21.De1+ >>>Bester Zug: Dd4, Wert: +Matt in 21, Tiefe: 21/21, Dauer: 00:43,687, 4.234.979 >>>Knoten, 97.963 K/sek >>> >>>So you´ll have to look for another ´unsolved´ mate position ... ;-) >>> >>>Best regards, >>>Franz. >> >>I have to disappoint you too. >>I completely forgot that Yace has solved this already. >>But it´s fine that Chest now also finds the solution ;-) >> >>Michael > >Well, I´ve now tried it with Yace, but after 10 minutes I aborted the analysis >with an evaluation of +7.54 - far and wide no mate! >Maybe you got this solution by Yace with Gigabytes of EGTBs (?)... http://chessprogramming.org/cccsearch/ccc.php?art_id=293850 > >So I absolutely see no reason to be disappoined about ChestUCI, which solves >it in 43 seconds and _without_ the use of any EGTBs! :-) Yes, congrats Michael > >Regards, >Franz.
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