Author: Roy Brunjes
Date: 20:42:15 05/08/03
Go up one level in this thread
On May 08, 2003 at 18:57:58, Richard Pijl wrote: >On May 08, 2003 at 16:54:45, Rex wrote: > >>On May 08, 2003 at 16:53:45, Rex wrote: >> >>>Here is a position played by CM9000. How long before d4 is found!! >>> >>> >>>4rrk1/pb2q2p/1p1p2P1/2pp4/1nP5/1PQ2NP1/P4PBP/R2R2K1 b - - 0 20 >> >>[D] 4rrk1/pb2q2p/1p1p2P1/2pp4/1nP5/1PQ2NP1/P4PBP/R2R2K1 b - - 0 20 > >The Baron (AMD MP 2000+, single CPU) needs 32 seconds to find d4 with a draw >score. Is that what you had in mind? > > ply time nodes score pv > > 4(10)- 0 14543 -41 h7g6 a2a3 d5c4 a3b4 > 4(10)& 0 15305 -43 h7g6 a2a3 d5d4 f3d4 > 4(10). 0 16202 -43 h7g6 a2a3 d5d4 f3d4 > 5( 9)& 0 24228 -43 h7g6 a2a3 d5d4 f3d4 b7g2 > 5(12). 0 65096 -43 h7g6 a2a3 d5d4 f3d4 b7g2 > 6(11)& 0 85614 -60 h7g6 a2a3 d5d4 f3d4 b7g2 g1g2 c5d4 > 6(15). 1 228166 -60 h7g6 a2a3 d5d4 f3d4 b7g2 g1g2 c5d4 > 7(16)& 1 301672 -60 h7g6 a2a3 d5d4 f3d4 c5d4 c3b4 b7g2 > 7(18). 3 883917 -60 h7g6 a2a3 d5d4 f3d4 c5d4 c3b4 b7g2 > 8(18)& 5 1295724 -32 h7g6 a2a3 d5d4 f3d4 c5d4 c3b4 b7g2 g1g2 e7e5 > 8(22). 11 2744288 -32 h7g6 a2a3 d5d4 f3d4 c5d4 c3b4 b7g2 g1g2 e7e5 > 9(22)& 22 5501602 -17 h7g6 c4d5 e7f7 c3b2 f7f6 b2f6 f8f6 a2a3 b7d5 >a3b4 d5f3 g2f3 e8e2 > 9(24)> 32 7851007 -16 d5d4 > 9(24)& 34 8474756 0 d5d4 f3d4 c5d4 c3b4 b7g2 g1g2 f8f2 g2f2 e7e2 >f2g1 e2e3 g1f1 e3f3 f1g1 f3e3 <rep> > 9(24). 39 9586369 0 d5d4 f3d4 c5d4 c3b4 b7g2 g1g2 f8f2 g2f2 e7e2 >f2g1 e2e3 g1f1 e3f3 f1g1 f3e3 <rep> > 10(26)& 52 13169535 0 d5d4 f3d4 c5d4 c3b4 b7g2 g1g2 f8f2 g2f2 e7e2 >f2g1 e2e3 g1g2 e3e2 g2g1 <rep> > 10(26). 91 22804410 0 d5d4 f3d4 c5d4 c3b4 b7g2 g1g2 f8f2 g2f2 e7e2 >f2g1 e2e3 g1g2 e3e2 g2g1 <rep> > 11(29)& 130 33343972 0 d5d4 f3d4 c5d4 c3b4 b7g2 g1g2 f8f2 g2f2 e7e3 >f2g2 e3e2 g2g1 e8f8 > 11(31). 252 64124829 0 d5d4 f3d4 c5d4 c3b4 b7g2 g1g2 f8f2 g2f2 e7e3 >f2g2 e3e2 g2g1 e8f8 > 12(33)& 378 97136807 0 d5d4 f3d4 c5d4 c3b4 b7g2 g1g2 f8f2 g2f2 e8f8 >f2g2 e7e2 g2g1 e2e3 g1h1 e3f3 h1g1 f3f2 g1h1 f2f3 <rep> > >Richard. CM9000 SKR finds the following (Pentium IV 1.8 GHz 64 MB hashtables): Time Depth Score Positions Moves 0:04 1/8 -0.08 376042 20...hxg6 21.Re1 Qf7 22.Rxe8 Rxe8 23.a3 d4 24.Nxd4 cxd4 25.Qxb4 Bxg2 26.Kxg2 0:12 1/9 -0.08 1128995 20...hxg6 21.Re1 Qf7 22.Rxe8 Rxe8 23.a3 d4 24.Nxd4 cxd4 25.Qxb4 Bxg2 26.Kxg2 0:32 1/10 -0.08 3131842 20...hxg6 21.Re1 Qf7 22.Rxe8 Rxe8 23.a3 d4 24.Nxd4 cxd4 25.Qxb4 Bxg2 26.Kxg2 0:51 1/10 -0.16 5287767 20...d4 21.Nxd4 cxd4 22.gxh7+ Kxh7 23.Rxd4 Bxg2 24.Kxg2 Qb7+ 25.Kg1 Qg7 26.Rh4+ Kg8 27.Qxg7+ Kxg7 28.Rg4+ Kf7 29.Rd1 Rg8 1:47 1/11 -1.16 11537721 20...d4 21.Nxd4 Bxg2 22.Kxg2 cxd4 23.gxh7+ Qxh7 24.Rxd4 Qg7 25.Rad1 Re2 26.Kg1 Nxa2 3:02 1/12 -1.18 20615633 20...d4 21.Nxd4 Bxg2 22.Kxg2 cxd4 23.Rxd4 Qf6 24.gxh7+ Kh8 25.f4 Nc2 26.Qxc2 Qxd4 27.Rd1 It appears there is more than a draw for Black in this position. Roy
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