Author: Uri Blass
Date: 07:48:27 05/20/04
Go up one level in this thread
On May 20, 2004 at 10:47:11, Uri Blass wrote: >On May 20, 2004 at 10:37:12, Uri Blass wrote: > >>On May 20, 2004 at 10:06:36, Will Singleton wrote: >> >>>Sometimes Crafty gives me a headache. I was sitting there, minding my own >>>business, when all of a sudden pow! and Crafty wins another one. Must be >>>something to this smp business. >>> >>>Anyway, on ICC Crafty runs on a 2x 2.8ghz xeon. It found Rxg6 in about a >>>minute, if you count my thinking time plus its thinking time (assuming it >>>pondered correctly, which it probably did). If I run the same position on my p4 >>>2.8ghz, it takes Crafty 4:44 to find the move. I suppose the hash could affect >>>things, but that's still quite a speedup. >>> >>>Here's the position. Finding Rxg6 probably depends in large part on >>>king-safety, since Amateur likes it fairly quickly (p4 2.8ghz): >>> >>>[d]2rq1r1k/1pp1bp2/p5pp/1n1Pp3/2B1N3/4PP2/PPQ2PRP/6RK w - - >>> >>>10 -28 283 1103649 Qb3 Nd6 Bd3 Nxe4 >>>11 -23 452 1839082 Qb3 Nd6 Bd3 Nxe4 fxe4 Rb8 f4 Bc5 Bc2 Qd6 f5 Rg8 fxg6 fxg6 >>>12 -14 889 3652804 Qb3 Nd6 Bd3 Bh4 >>>13 -9 1572 6584263 Qb3 Nd6 Bd3 Nxe4 fxe4 Rb8 Qc3 Qd6 Rc1 Rc8 f4 Bf6 Qc5 Qd7 >>>14 -5 4219 17715012 Qb3 Nd6 Bd3 Ra8 Nxd6 Qxd6 Qc3 Rd8 e4 >>>14 6 6427 26545535 Rxg6 fxg6 Rxg6 Rf5 >> >> >>Movei can find it at depth 12 and has a significant fail high(clearly more than >>amateur) >> >>10 -4 6223 12147985 c2b3 d8d7 c4e2 c8a8 a2a4 b5d6 e4c5 d7c8 f3f4 e5f4 b3c3 h8g8 >> e3f4 >>11 2 7440 14469997 c2b3 b5d6 c4d3 c8b8 b3c3 d6e4 f3e4 d8d6 g1d1 b8c8 h1g1 >>11 2 9454 18614491 c2b3 b5d6 c4d3 c8b8 b3c3 d6e4 f3e4 d8d6 g1d1 b8c8 h1g1 >>12 4 13230 25854307 c2b3 b5d6 c4d3 d6e4 f3e4 c8b8 f2f4 d8d6 g1f1 h8g8 f4f5 e7g5 >> f5g6 d6g6 >>12 5 20050 39877602 g2g6 >>12 34 22062 43841142 g2g6 >>12 70 27037 53351187 g2g6 f7g6 g1g6 b5d6 e4d6 d8d6 g6d6 c7d6 b2b3 f8f3 c2g6 f3f >>6 g6g4 >>12 70 27636 54535862 g2g6 f7g6 g1g6 b5d6 e4d6 d8d6 g6d6 c7d6 b2b3 f8f3 c2g6 f3f >>6 g6g4 >>13 81 34854 66663703 g2g6 f7g6 g1g6 b5d6 e4d6 d8d6 g6d6 c7d6 b2b3 f8f3 c2g6 f3f >>6 g6g4 f6f8 >> >> > >I can add that yace also agree it is tactics and shows similiar line to movei >in the first plies > >not Rxg6 fxg6 Rxg6 Rf5 but Rxg6 fxg6 Rxg6 Nd6 > >Here is analysis one ply after Rxg6(yace probably needs a long time to find Rxg6 >from the root position). > >New game, >2rq1r1k/1pp1bp2/p5Rp/1n1Pp3/2B1N3/4PP2/PPQ2P1P/6RK b - - 0 1 > >Analysis by Yace Paderborn: > >1...fxg6 2.Rxg6 Rxf3 3.Rxh6+ Kg8 > -+ (-2.51) Depth: 1 00:00:00 >1...fxg6 2.Rxg6 Rxf3 3.Rxh6+ Kg8 > -+ (-2.51) Depth: 1 00:00:00 >1...fxg6 2.Rxg6 Rxf3 3.Rxh6+ Kg8 > -+ (-2.51) Depth: 2 00:00:00 >1...fxg6 2.Rxg6 Rxf3 3.Rxh6+ Kg8 > -+ (-2.51) Depth: 2 00:00:00 >1...fxg6 2.Rxg6 Rxf3 3.Rxh6+ Kg8 > -+ (-2.51) Depth: 3 00:00:00 >1...fxg6 2.Rxg6 Rxf3 3.Rxh6+ Kg8 > -+ (-2.51) Depth: 3 00:00:00 >1...fxg6 2.Rxg6 Bg5 3.a4 Nd6 > -+ (-2.32) Depth: 4 00:00:00 >1...fxg6 2.Rxg6 Bg5 3.a4 Nd6 > -+ (-2.32) Depth: 4 00:00:00 >1...fxg6 2.Rxg6 Bg5 3.Nc5 Nd6 4.Ne6 > -+ (-2.33) Depth: 5 00:00:00 >1...fxg6 2.Rxg6 Bg5 3.Nc5 Nd6 4.Ne6 > -+ (-2.33) Depth: 5/17 00:00:00 >1...fxg6 2.Rxg6 Rxf3 3.Rxh6+ Kg7 4.Re6 Rf5 5.a3 > -+ (-2.13) Depth: 6/17 00:00:00 104kN >1...fxg6 2.Rxg6 Rxf3 3.Rxh6+ Kg7 4.Re6 Rf5 5.a3 > -+ (-2.13) Depth: 6/22 00:00:00 120kN >1...fxg6 2.Rxg6 Rxf3 3.Rxh6+ Kg7 4.Rh5 Qe8 5.Rxe5 Qh5 > -+ (-1.73) Depth: 7/22 00:00:01 246kN >1...fxg6 2.Rxg6 Rxf3 3.Rxh6+ Kg7 4.Rh5 c6 5.dxc6 Rxc6 > -+ (-1.73) Depth: 7/23 00:00:01 329kN >1...fxg6 2.Rxg6 Rxf3 3.Rxh6+ Kg7 4.Rh5 c6 5.dxc6 Rxc6 > -+ (-1.73) Depth: 7/23 00:00:02 416kN >1...fxg6 2.Rxg6 Rxf3 3.Rxh6+ Kg7 4.Rh5 c6 5.dxc6 Rxc6 6.Rxe5 > -+ (-1.73) Depth: 8/23 00:00:04 1004kN >1...fxg6 2.Rxg6 Rxf3 3.Rxh6+ Kg7 4.Rh5 c6 5.dxc6 Rxc6 6.Rxe5 > -+ (-1.73) Depth: 8/28 00:00:04 1123kN >1...fxg6 2.Rxg6 Rxf3 3.Rxh6+ Kg7 4.Rh5 Qf8 5.Rxe5 Qf7 6.a4 Bd6 > -+ (-1.68) Depth: 9/29 00:00:10 3129kN >1...fxg6 2.Rxg6 Rxf3 3.Rxh6+ Kg7 4.Rh5 Qf8 5.Rxe5 Qf7 6.a4 Bd6 > -+ (-1.68) Depth: 9/29 00:00:11 3372kN >1...fxg6 2.Rxg6 Rxf3 3.Rxh6+ Kg7 4.Nf6 Bxf6 5.Qg6+ Kf8 6.d6 cxd6 7.Qg8+ Ke7 >8.Rh7+ Bg7 9.Rxg7+ Kf6 10.Qxd8+ Kxg7 > µ (-1.28) Depth: 10/35 00:00:22 7099kN >1...fxg6 2.Rxg6 Rxf3 3.Rxh6+ Kg7 4.Nf6 Bxf6 5.Qg6+ Kf8 6.d6 cxd6 7.Qg8+ Ke7 >8.Rh7+ Bg7 9.Rxg7+ Kf6 10.Qxd8+ Kxg7 > ³ (-0.28) Depth: 10/35 00:00:33 11332kN >1...fxg6 2.Rxg6 Rf5 3.Ng5 Qf8 4.Ne6 Qf7 5.Rg7 Qh5 6.Rxe7 Qxf3+ 7.Kg1 > ³ (-0.26) Depth: 10/40 00:01:04 23473kN >1...fxg6 2.Rxg6 Rf5 3.Ng5 Qf8 4.Ne6 Qf7 5.Rg7 Qh5 6.Rxe7 Qxf3+ 7.Kg1 > ³ (-0.26) Depth: 10/40 00:01:12 26461kN >1...fxg6 2.Rxg6 Rf5 3.Rxh6+ Kg7 4.Rh3 Qd7 5.Ng3 Nd6 6.Nxf5+ Nxf5 7.Qe4 Kf6 8.Rh7 > ³ (-0.32) Depth: 11/40 00:01:52 41304kN >1...fxg6 2.Rxg6 Rf5 3.Rxh6+ Kg7 4.Rh3 Qd7 5.Ng3 Nd6 6.Nxf5+ Nxf5 7.Qe4 Kf6 8.Rh7 > ³ (-0.32) Depth: 11/40 00:01:57 42672kN >1...fxg6 2.Rxg6 Rf5 3.Rxh6+ Kg7 4.Ng3 Kxh6 5.Nxf5+ Kg5 6.f4+ exf4 7.Qe4 Bf6 >8.exf4+ Kg6 9.Ne7+ Kf7 10.Qe6+ Ke8 11.Nxc8+ Qe7 > = (0.08) Depth: 12/45 00:05:09 115352kN >1...fxg6 2.Rxg6 Nd6 3.Nxd6 Qxd6 4.Rxd6 cxd6 5.Qe4 b5 6.Bd3 > ± (1.05) Depth: 12/46 00:09:32 209310kN >1...fxg6 2.Rxg6 Nd6 3.Nxd6 Qxd6 4.Rxd6 cxd6 5.Qe4 b5 6.Bd3 > ± (1.05) Depth: 12/46 00:09:45 213238kN > >(Blass, Tel-Aviv 20.05.2004) > >>Uri
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