Author: Sune Fischer
Date: 02:11:21 10/07/02
Go up one level in this thread
On October 06, 2002 at 21:56:49, Jeremiah Penery wrote: >On October 06, 2002 at 18:02:35, Uri Blass wrote: > >>On October 06, 2002 at 17:33:56, Dadi Jonsson wrote: >> >>>On October 06, 2002 at 17:01:43, Dan Andersson wrote: >>> >>>>How long before your favourite engine finds the winning move? >>>>[D]5k2/1q4bQ/5p1p/p1p1pPpP/2PpP1P1/Pp1P4/1P5K/5B2 b - - 0 1 >>>>A subvariation from a game I played against a computer recently. I'm black. >>>> >>>>MvH Dan Andersson >>> >>>A nice position for Black, but instead of asking for "the winning move" it's >>>more interesting to try to find ALL the moves that lead to a victory for Black. >>> >>>Ruffian likes Qc7 and sees it as a winning line in around 2 minutes on an AMD >>>1400. 1...a4 and 1...Qb6 probably also lead to the same conclusion. Possibly >>>other moves also lead to a win. >> >> >>Yace see nothing inspite of getting depth 22. >> >>On the other hand old Deep Fritz is fast in seeing Qc7 but has no idea why it is >>winning and the pv is only one move Qc7. >>Movei at depth 18 can see advantage for black with a4 but no convincing score >>(only +0.55 for black) > >It takes some depth 25 to see the win with programs I've tried. Sacrificing the queen get's pruned by nullmove, when I turn nullmove off in frenzee I get some interesting pv's: depth=13 -1.15 1...Qd7 1.Kg1 Qa4 2.Kf2 Qxa3 3.bxa3 b2 4.Qg6 b1=Q 5.Be2 Qb2 6.Qh7 Qxa3 7.Bd1 Qxd3 -S.
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