Author: Anthony Cozzie
Date: 21:46:05 05/08/03
Go up one level in this thread
On May 08, 2003 at 23:42:15, Roy Brunjes wrote: >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 Zappa agrees, although it takes quite a while. 1...hxg6 2. cxd5 Bxd5 3. a3 Qb7 4. axb4 cxb4 5. Qc2 Bxf3 6. Bxf3 Rxf3 = (-0.24) Depth: 8 00:00:15.90 4388kN 1...d4 2. Nxd4 cxd4 3. Rxd4 Bxg2 4. Rh4 h5 5. Kxg2 Qg7 6. Qxg7 Kxg7 7. a3 Nd3 = (-0.05) Depth: 9 00:00:47.92 14492kN 1...d4 2. Nxd4 cxd4 3. Qxb4 Bxg2 4. Kxg2 Rxf2 5. Kxf2 Qe2 6. Kg1 Qe3 7. Kg2 Qe2 8. Kh1 Qe4 9. Kg1 Qe3 = (0.00) Depth: 10 00:01:35.20 29551kN 1...d4 2. Nxd4 cxd4 3. Qxb4 Bxg2 4. Kxg2 Rxf2 5. Kxf2 Qe2 6. Kg1 Qe3 7. Kg2 Qe2 8. Kh1 Qe4 9. Kg1 Qe3 = (0.00) Depth: 11 00:03:05.59 57640kN 1...d4 2. Nxd4 cxd4 3. Qxb4 Bxg2 4. Kxg2 Rxf2 5. Kxf2 Qe2 6. Kg1 Qe3 7. Kg2 Qe2 8. Kg1 = (0.00) Depth: 12 00:06:17.22 118297kN 1...d4 2. Nxd4 Bxg2 3. Kxg2 cxd4 4. gxh7 Qxh7 5. Qxd4 Qh5 6. a3 Nc2 7. Qd3 Nxa1 8. Qd5 Qxd5 9. Kg1 Qxd1 10. Kg2 + (0.30) Depth: 13 00:15:39.40 309679kN 1...d4 2. Nxd4 Bxg2 3. g7 Rxf2 4. Re1 Be4 5. Kxf2 Qf6 6. Kg1 Qxd4 7. Qxd4 cxd4 8. Rad1 Nc2 9. Re2 Kxg7 = (0.85) Depth: 13 00:24:55.05 499553kN 1...d4 2. Nxd4 Bxg2 3. g7 Rxf2 4. Re1 Be4 5. Kxf2 Qf6 6. Kg1 Qxd4 7. Qxd4 cxd4 8. Rad1 Nc2 9. Re2 Kxg7 10. Kf2 = (0.85) Depth: 14 00:35:04.82 695644kN
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