Author: m.d.hurd
Date: 12:31:51 03/06/05
Go up one level in this thread
On March 06, 2005 at 14:22:29, Mike Byrne wrote: >On March 06, 2005 at 09:46:02, Jouni Uski wrote: > >>These positions remain unsolved years now in 10 minutes: >> >>[D]1q1r3k/3P1pp1/ppBR1n1p/4Q2P/P4P2/8/5PK1/8 w - - bm Rxf6 >>[D]r1b1k2r/pp3ppp/4pb2/2n5/3RB3/4BN2/PqP1QPPP/3R2K1 w kq - bm Rd8+ >> >>Any solutions? >> >>Jouni > >For #2, not solved after a 20 minute 5.3 billion node search although I beleive >it is consider the second best move. Ng5 here looks very good here and maybe >better than Rd8. > >Seaching just Rd8, it is a point behind Ng5 after a 15 ply search.. > > 15-> 6:59 0.66 1. Rd8+ Bxd8 2. Bxc5 Be7 3. Qd2 f5 > 4. Bxe7 Kxe7 5. Bxf5 g6 6. Be4 Kf7 > 7. Qh6 Ke8 8. Qg5 Kf7 9. Ne5+ Kg7 > >Black(1): r1b1k2r/pp3ppp/4pb2/2n5/3RB3/4BN2/PqP1QPPP/3R2K1 w kq - bm Rd8+ >White(1): go > time surplus 29.92 time limit 20:00 (20:00) > depth time score variation (1) >starting thread 1 > 8 0.60 0.46 1. Ng5 h6 2. Nh7 Bxd4 3. Bxd4 Qb4 4. > Bxg7 Qxe4 5. Qxe4 Nxe4 6. Bxh8 > 8-> 0.89 0.46 1. Ng5 h6 2. Nh7 Bxd4 3. Bxd4 Qb4 4. > Bxg7 Qxe4 5. Qxe4 Nxe4 6. Bxh8 > 9 1.99 0.75 1. Ng5 Bd7 2. R4d2 Bxg5 3. Bxg5 Qe5 > 4. Qe3 Nxe4 5. Rxd7 O-O 6. Rxb7 > 9-> 2.57 0.75 1. Ng5 Bd7 2. R4d2 Bxg5 3. Bxg5 Qe5 > 4. Qe3 Nxe4 5. Rxd7 O-O 6. Rxb7 > 10 5.55 1.13 1. Ng5 Bxd4 2. Bxd4 Qa3 3. Bxh7 Bd7 > 4. Bxg7 O-O-O 5. Bxh8 Rxh8 > 10-> 6.82 1.13 1. Ng5 Bxd4 2. Bxd4 Qa3 3. Bxh7 Bd7 > 4. Bxg7 O-O-O 5. Bxh8 Rxh8 > 11 19.14 1.16 1. Ng5 Bd7 2. Qf3 Rc8 3. R4d2 Bxg5 > 4. Bxg5 f5 5. Bxb7 Rc7 6. Ba8 O-O > 11-> 23.33 1.16 1. Ng5 Bd7 2. Qf3 Rc8 3. R4d2 Bxg5 > 4. Bxg5 f5 5. Bxb7 Rc7 6. Ba8 O-O > 12 48.14 1.24 1. Ng5 h6 2. R4d2 O-O 3. Bxc5 Bxg5 > 4. f4 Bxf4 5. Rd8 Bxh2+ 6. Kh1 Bd6 > 7. R1xd6 Qxa2 8. Rxf8+ Kxf8 > 12-> 1:04 1.24 1. Ng5 h6 2. R4d2 O-O 3. Bxc5 Bxg5 > 4. f4 Bxf4 5. Rd8 Bxh2+ 6. Kh1 Bd6 > 7. R1xd6 Qxa2 8. Rxf8+ Kxf8 > 13 2:14 1.37 1. Ng5 Bd7 2. Qf3 Bxg5 3. Bxg5 O-O > 4. Bxh7+ Kxh7 5. Bf6 Qxc2 6. Qh5+ Kg8 > 7. Bxg7 Qh7 8. Qxc5 b6 9. Qe7 > 13-> 3:18 1.37 1. Ng5 Bd7 2. Qf3 Bxg5 3. Bxg5 O-O > 4. Bxh7+ Kxh7 5. Bf6 Qxc2 6. Qh5+ Kg8 > 7. Bxg7 Qh7 8. Qxc5 b6 9. Qe7 > 14 5:19 1.66 1. Ng5 Bd7 2. Qf3 Bxg5 3. Bxg5 O-O > 4. Bxh7+ Kxh7 5. Rh4+ Kg8 6. Qh3 f6 > 7. Rh8+ Kf7 8. Qh5+ Ke7 9. Be3 Nb3 > 10. Bc5+ Nxc5 11. Qxc5+ Kf7 12. Rxd7+ > 14-> 8:08 1.66 1. Ng5 Bd7 2. Qf3 Bxg5 3. Bxg5 O-O > 4. Bxh7+ Kxh7 5. Rh4+ Kg8 6. Qh3 f6 > 7. Rh8+ Kf7 8. Qh5+ Ke7 9. Be3 Nb3 > 10. Bc5+ Nxc5 11. Qxc5+ Kf7 12. Rxd7+ > (s=2) > 15 13:20 1.68 1. Ng5 Bd7 2. Qf3 Rc8 3. Nxh7 Nxe4 > 4. Rxd7 Rxh7 5. Qxe4 Rh4 6. Qf3 Qe5 > 7. h3 Qe4 8. Qxe4 Rxe4 9. Rxb7 Rxc2 > 10. Rxa7 > 15 19:45 7/50* 1. Rd6 > > time=20:00 cpu=32827% mat=-1 n=5330941885 fh=95% nps=4.44M > ext-> chk=398623717 cap=8763266 pp=201930 1rep=27144258 mate=19895 >71 > predicted=1 nodes=5330941885 evals=719549190 50move=0 > endgame tablebase-> probes=0 hits=0 > SMP-> split=1231 stop=201 data=9/64 cpu=715240:05 elap=20:00 > >White(1): Ng5 > time used: 20:00 Shredder 9 UCI Position 1 12/30 0:01 +1.30 1.Rd3 Qa7 2.Kg1 Kh7 3.Rg3 Rxd7 (523.191) 478 13/27 0:01 +1.23 1.Rd3 Qa7 2.Kg1 Kh7 3.Rg3 Rxd7 4.Qf5+ Kh8 5.Bxd7 Qxd7 6.Qxd7 Nxd7 7.Rb3 Kh7 8.Kg2 (951.361) 490 13/27 0:02 +1.24++ 1.Rd1 (1.238.726) 492 13/29 0:02 +1.59++ 1.Rd1 (1.333.774) 493 13/29 0:03 +1.68 1.Rd1 Qa7 2.Qd6 Kg8 3.Re1 Rxd7 4.Bxd7 Qxd7 5.Qxd7 Nxd7 6.Re8+ Kh7 (1.552.923) 496 13/36 0:04 +1.69++ 1.Qe7 (2.029.632) 499 13/37 0:05 +1.69 1.Qe7 Ng8 (2.537.967) 498 14/30 0:06 +1.44-- 1.Qe7 Ng8 (3.147.861) 497 14/34 0:06 +0.94-- 1.Qe7 Ng8 (3.285.356) 498 14/41 0:29 0.00 1.Qe7 Ng8 2.Qe5 Nf6 (13.853.721) 476 14/41 0:29 +0.01++ 1.Rd1 (13.904.723) 476 14/41 0:29 +0.36++ 1.Rd1 (14.000.592) 476 14/41 0:33 +1.52 1.Rd1 Qa7 2.Kg1 Kg8 (15.745.830) 474 14/41 0:34 +1.53++ 1.Qd4 (16.234.651) 473 14/41 0:35 +1.57 1.Qd4 Ng8 2.Bf3 a5 3.Qxb6 Qxb6 4.Rxb6 Rxd7 5.Ra6 Rd4 6.Rxa5 Rxf4 7.Ra7 Nf6 (16.597.847) 473 15/34 0:37 +1.64 1.Qd4 Ng8 2.Bf3 a5 3.Qxb6 Qxb6 4.Rxb6 Rxd7 5.Ra6 Rd4 6.Rxa5 Rxf4 7.Ra7 Nf6 8.a5 Ra4 9.a6 (17.969.045) 473 16/37 0:44 +1.63 1.Qd4 Ng8 2.Bf3 a5 3.Qxb6 Qxb6 4.Rxb6 Rxd7 5.Ra6 Rd4 6.Rxa5 Rxf4 7.Ra7 Nf6 8.a5 Ra4 9.a6 Kg8 (21.148.740) 474 17/40 0:57 +1.74 1.Qd4 Ng8 2.Bf3 a5 3.Qxb6 Qxb6 4.Rxb6 Rxd7 5.Ra6 Rd4 6.Rxa5 Rxf4 7.Ra8 Kh7 8.Kg3 Rc4 9.a5 Ra4 10.a6 (27.302.386) 477 18/47 1:33 +1.99++ 1.Qd4 Ng8 (43.971.997) 471 18/48 2:12 +1.99 1.Qd4 Ng8 2.Bf3 b5 (62.556.679) 473 19/46 3:08 +2.22 1.Qd4 Ng8 2.Bf3 Qc7 3.Qxb6 Rxd7 4.Qxc7 Rxc7 5.Rxa6 Nf6 6.a5 Rc5 7.Ra7 Kg8 8.a6 Ra5 9.Be2 Nxh5 10.Bxh5 (89.663.864) 475 20/50 4:10 +2.20 1.Qd4 Ng8 2.Bf3 Qc7 3.Qxb6 Qxb6 4.Rxb6 Rxd7 5.Rxa6 Nf6 6.a5 Kh7 7.Rc6 Rd2 8.a6 Ra2 9.Rd6 Ra3 10.Rxf6 (119.856.843) 478 best move: Qe5-d4 time: 10:00.140 min n/s: 515.785 CPU 99.9% n/s(1CPU): 516.301 nodes: 309.527.466 Analysis of Rxf6 Analysing Rd6xf6 ... 17/26 0:01 +1.33++ 1.Rxf6 Qxe5 (910.890) 678 17/27 0:02 +1.66 1.Rxf6 Qxe5 2.fxe5 gxf6 3.exf6 a5 4.Kf3 (1.491.988) 697 18/33 0:03 +1.89 1.Rxf6 Qxe5 2.fxe5 gxf6 3.exf6 Rb8 4.Kf3 Kg8 (2.370.344) 705 19/44 0:05 +2.12 1.Rxf6 Qxe5 2.fxe5 gxf6 3.exf6 Rb8 4.Kf3 b5 5.axb5 axb5 6.Bxb5 (3.798.935) 713 20/45 0:08 +2.37++ 1.Rxf6 Qxe5 (5.727.275) 715 20/47 0:15 +2.86 1.Rxf6 Qxe5 2.fxe5 gxf6 3.exf6 b5 4.axb5 axb5 5.Bxb5 Rb8 6.Kf3 (10.129.835) 665 21/42 0:22 +3.11++ 1.Rxf6 Qxe5 (14.493.139) 643 21/45 0:30 +3.61++ 1.Rxf6 Qxe5 (19.029.752) 631 21/48 0:52 +5.09 1.Rxf6 Qxe5 2.fxe5 gxf6 3.exf6 Rb8 4.Kf3 a5 5.Ke4 (32.679.517) 622 22/47 1:08 +5.08 1.Rxf6 Qxe5 2.fxe5 gxf6 3.exf6 b5 4.axb5 axb5 5.Bxb5 Rxd7 (41.185.643) 605 23/51 2:04 +5.31 1.Rxf6 Qxe5 2.fxe5 gxf6 3.exf6 Kg8 4.Kf3 Rb8 5.Kf4 b5 (76.316.365) 612 24/53 3:32 +5.56++ 1.Rxf6 Qxe5 (123.384.800) 581 24/53 4:30 +6.06++ 1.Rxf6 Qxe5 (156.036.269) 577 Position 2 9/26 0:01 +0.55++ 1.Ng5 h6 (640.273) 413 9/26 0:01 +0.91 1.Ng5 h6 2.Qh5 Bxg5 3.Bxg5 O-O 4.Be7 Nxe4 5.Bxf8 Qxc2 (719.214) 414 10/26 0:02 +1.16++ 1.Ng5 h6 (1.122.133) 419 10/32 0:03 +1.24 1.Ng5 Bd7 2.Qf3 Nxe4 3.Nxe4 Bxd4 4.Nd6+ Ke7 5.Bxd4 Qxc2 6.Bxg7 f5 (1.601.910) 416 11/28 0:05 +1.24 1.Ng5 Bd7 2.Qf3 Nxe4 3.Nxe4 Bxd4 4.Nd6+ Ke7 5.Bxd4 Qxc2 6.Bxg7 f5 7.Bxh8 (2.225.833) 421 12/34 0:09 +1.46 1.Ng5 Bd7 2.Qf3 Rc8 3.R4d2 Bxg5 4.Bxg5 f5 5.Bxb7 Qxb7 6.Qxb7 Nxb7 7.Rxd7 (3.908.847) 419 13/32 0:16 +1.44 1.Ng5 Bd7 2.Qf3 Rc8 3.R4d2 Bxg5 4.Bxg5 f5 5.Bxb7 Rc7 6.Ba8 O-O 7.c3 Qb5 (6.977.423) 426 14/38 0:41 +1.67 1.Ng5 Bd7 2.Qf3 Bb5 3.a4 (17.359.071) 416 15/41 1:16 +1.42-- 1.Ng5 Bd7 (31.725.956) 416 15/41 1:27 +1.42 1.Ng5 Bd7 2.Qf3 Rc8 3.Qh5 (36.238.686) 414 16/39 2:28 +1.67++ 1.Ng5 Bd7 (62.187.887) 418 16/41 3:03 +1.81 1.Ng5 Bd7 2.Qf3 Rc8 3.Qh5 g6 4.Qf3 Bxg5 5.Bxg5 f5 6.Bxb7 Qxb7 7.Qxb7 Nxb7 8.Rxd7 h6 9.Be3 (76.274.814) 415 17/44 5:21 +2.05 1.Ng5 Bd7 2.Qf3 Qxa2 3.Bxb7 (132.885.305) 413 Analysis of Rd8+ Analysing Rd4-d8 ... 11/27 0:01 -0.24 1.Rd8+ Bxd8 2.Bxc5 Bd7 3.Bd4 Qb4 4.a3 Bb5 (650.608) 420 12/32 0:02 -0.22 1.Rd8+ Bxd8 2.Bxc5 Bd7 3.Bd4 Qb4 4.Bxg7 Rg8 5.Ne5 Bb5 6.Qg4 Qa4 7.Kh1 Bf6 (1.160.353) 431 13/34 0:05 +0.03++ 1.Rd8+ Bxd8 (2.331.237) 417 13/36 0:09 +0.53++ 1.Rd8+ Bxd8 (4.014.901) 417 13/46 0:51 +0.82 1.Rd8+ Bxd8 2.Bxc5 Be7 3.Qd3 g6 (22.302.782) 429 14/41 0:59 +1.06 1.Rd8+ Bxd8 2.Bxc5 Be7 3.Qd3 f5 4.Bxe7 Kxe7 5.Bxf5 Qb6 6.Bxh7 Rd8 7.Qa3+ (25.581.727) 427 15/44 1:14 +1.08 1.Rd8+ Bxd8 2.Bxc5 Be7 3.Qd3 f5 4.Bxe7 Kxe7 5.Bxf5 g6 6.Qd6+ Kf6 7.Be4 Kg7 8.Qe7+ Kh6 9.a4 (31.957.587) 427 16/44 1:44 +1.33++ 1.Rd8+ Bxd8 (44.379.813) 422 16/44 2:02 +1.33 1.Rd8+ Bxd8 2.Bxc5 Be7 3.Qd3 f5 4.Bxf5 Qf6 5.Bxe7 Kxe7 (52.575.702) 429 17/47 3:08 +1.54 1.Rd8+ Bxd8 2.Bxc5 Be7 3.Qd3 f5 4.Bxf5 Qf6 5.Bxe7 Kxe7 6.Qd6+ Ke8 7.Be4 Qe7 8.Bc6+ Kf8 9.Qd8+ Qxd8 10.Rxd8+ Ke7 11.Rxh8 bxc6 12.Rxh7 (81.064.352) 430 18/48 5:37 +1.79++ 1.Rd8+ Bxd8 (143.583.385) 425 18/50 8:36 +2.29++ 1.Rd8+ Bxd8 (219.176.240) 424 Mike
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