Author: John Merlino
Date: 10:11:36 11/24/02
Go up one level in this thread
On November 24, 2002 at 09:20:40, Thomas Blomquist wrote: >[D]1r4r1/3q1npk/2b1pbnp/Rp1p4/1N1P3P/2PQ1pP1/1K3B2/5B1R w - - 0 1 > > Thomas I don't think any computer is going to find this in a reasonable amount of time. From some testing, it appears that CM9000 (default personality) would need to get to around depth 19 to find the move, and that would take a very long time. I think a better test position is the one after 5...Kh2, as it appears that finding 6.Bg3+ (let alone giving it a mating score) is hard enough! [D]1r4r1/3q1np1/2b1pb1p/Rp1p4/1N1P3P/2P2p2/1K3B1k/5BR1 w - - 0 6 CM9000 (default personality), on a P3-733, needs exactly 2 minutes to find Bg3+ and give it a positive score. It takes 7:49 to announce Mate in 10. This is a good test position.... (wish I still had my P4-2.66....) :-( Time Depth Score Positions Moves 0:00 1/3 -8.22 5757 6.Rg3 e5 7.Nxc6 Rbc8 8.Ra7 0:00 1/4 -8.18 11989 6.Rg3 e5 7.Nxc6 Rbc8 8.dxe5 Bxe5 9.Rh3+ Qxh3 10.Bxh3 Kxh3 11.Rxb5 0:00 1/5 -7.92 43740 6.Rg3 e5 7.Nxc6 Ra8 8.Rxb5 exd4 9.Nxd4 Bxd4 10.cxd4 0:01 1/6 -8.36 75497 6.Rg3 e5 7.Nxc6 Ra8 8.Rxf3 Rxa5 9.Nxa5 e4 0:03 1/7 -8.02 251193 6.Rg3 e5 7.Rxf3 exd4 8.cxd4 Nd6 9.Nxc6 Nc4+ 10.Bxc4 dxc4 0:11 1/8 -7.92 834581 6.Rg3 e5 7.Rxf3 exd4 8.Rg3 dxc3+ 9.Kc1 d4 10.Nxc6 Rbe8 11.Rg2+ Kh3 12.Rxg7+ Kh2 0:54 1/9 -8.04 4091649 6.Rg3 e5 7.Rxf3 Qg4 8.Rh3+ Qxh3 9.Bxh3 Kxh3 10.Nxc6 Rbc8 11.dxe5 Nxe5 12.Nxe5 Bxe5 13.Rxb5 Bxc3+ 14.Kc2 2:00 1/9 2.30 9170325 6.Bg3+ Kxg1 7.Ra1 Ra8 8.Rb1 Ra1 9.Kxa1 Ra8+ 10.Kb2 Ra1 11.Rxa1 Qa7 12.Rxa7 2:06 1/10 2.30 9902435 6.Bg3+ Kxg1 7.Ra1 Ra8 8.Rb1 Ra1 9.Kxa1 Ra8+ 10.Kb2 Ra1 11.Rxa1 Qa7 12.Rxa7 2:31 2/11 2.50 12933238 6.Bg3+ Kxg1 7.Ra1 Ra8 8.Rb1 Ra1 9.Kxa1 Ra8+ 10.Kb2 Ra1 11.Rxa1 Qa7 12.Rxa7 Kxf1 13.Nxc6 7:49 3/12 Mate10 47767168 6.Bg3+ Kxg1 7.Ra1 Ra8 8.Rb1 Ra1 9.Kxa1 Ra8+ 10.Kb2 Ra1 11.Kxa1 Qa7+ 12.Na2 Qxa2+ 13.Kxa2 f2 14.Bh3+ f1=Q 15.Rxf1# jm
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