Author: Torstein Hall
Date: 02:54:04 02/25/01
Go up one level in this thread
On February 24, 2001 at 12:40:42, Uri Blass wrote: >On February 24, 2001 at 10:18:42, Enrique Irazoqui wrote: > >>On February 24, 2001 at 07:08:47, Howard Exner wrote: >> >>>[D]1q1r3k/3P1pp1/ppBR1n1p/2p1Q2P/P4P2/8/5PK1/8 w >>> >>>This is the winning sequence. >>>1. Rxf6 Qxe5 2. fxe5 gxf6 3. exf6 >>> >>>Can today's programs on fast hardware find this? >> >>On a dual P933 with 512MB hash, Deep Fritz and Deep Shredder beta don't pick >>Rxf6 in less than 20 minutes. Crafty 18.03 for CB does in 12 minutes. Now I'm >>trying with Junior 7 beta and if it sees it I will post the analysis. Nice >>position, Howard. >> >>Enrique >> >>New position >>1q1r3k/3P1pp1/ppBR1n1p/2p1Q2P/P4P2/8/5PK1/8 w - - 0 1 >> >>Analysis by Crafty 18.03: >> >>1.Rxf6 Qxe5 2.fxe5 gxf6 3.exf6 >> µ (-1.23) Depth: 1/2 00:00:03 >>1.Kg1 >> µ (-0.83) Depth: 1/2 00:00:03 >>1.Kg1 >> ³ (-0.54) Depth: 1/2 00:00:03 >>1.Kg1 Nxh5 >> -+ (-1.60) Depth: 2/6 00:00:03 >>1.Rxf6 Qxe5 2.fxe5 gxf6 3.exf6 >> µ (-1.23) Depth: 2/6 00:00:03 >>1.Rd3 Qxe5 2.fxe5 Nxh5 >> µ (-1.14) Depth: 2/6 00:00:03 >>1.a5 Ng4 >> µ (-0.85) Depth: 2/6 00:00:03 >>1.a5 Ng4 2.Qe8+ Kh7 >> µ (-0.92) Depth: 3/6 00:00:03 >>1.a5 bxa5 2.Qxc5 Nxh5 >> -+ (-1.42) Depth: 4/11 00:00:03 >>1.Kf1 Qc7 2.Rxf6 Qxe5 3.fxe5 gxf6 4.exf6 >> µ (-1.34) Depth: 4/11 00:00:03 >>1.Rd3 Qxe5 2.fxe5 Nxh5 >> µ (-1.14) Depth: 4/11 00:00:03 >>1.Rxf6 Qxe5 2.Rxh6+ Kg8 3.fxe5 gxh6 >> µ (-0.77) Depth: 4/11 00:00:03 >>1.Rxf6 Qxe5 2.Rxh6+ gxh6 3.fxe5 c4 >> µ (-0.99) Depth: 5/14 00:00:03 >>1.Qe7 c4 2.Rd4 Nxh5 3.Qe8+ Kh7 4.Qxf7 >> µ (-0.75) Depth: 5/14 00:00:03 >>1.Qe7 Ng8 2.Qe5 f6 3.Qe6 Qc7 >> µ (-0.90) Depth: 6/14 00:00:03 71kN >>1.Rxf6 Qxe5 2.Rxh6+ gxh6 3.fxe5 c4 4.Kf3 >> µ (-0.82) Depth: 6/14 00:00:03 79kN >>1.Rxf6 Qxe5 2.fxe5 gxf6 3.exf6 c4 4.Kf3 >> µ (-1.36) Depth: 7/14 00:00:03 91kN >>1.Qe7 >> µ (-0.96) Depth: 7/14 00:00:03 107kN >>1.Qe7 Ng8 2.Qe5 f6 3.Qe6 Qc7 4.f5 >> µ (-0.71) Depth: 7/14 00:00:03 154kN >>1.Qe7 Ng8 2.Qe5 f6 3.Qe6 Qc7 4.Bd5 a5 >> µ (-0.98) Depth: 8/14 00:00:03 204kN >>1.Kg1 Qc7 2.Re6 Qxe5 3.Rxe5 Kh7 4.Re7 c4 >> µ (-0.95) Depth: 8/14 00:00:03 429kN >>1.Kg1 Qc7 2.Re6 Qxe5 3.Rxe5 Kh7 4.Re7 c4 5.Kg2 Nxh5 6.Rxf7 >> µ (-0.96) Depth: 9/16 00:00:04 576kN >>1.Qe7 Ng8 2.Qe5 f6 3.Qe6 Qc7 4.Bd5 b5 5.Rxa6 bxa4 >> µ (-0.86) Depth: 9/16 00:00:04 821kN >>1.Qe7 Ng8 2.Qe5 f6 3.Qe6 Qc7 4.Bd5 b5 5.Rxa6 bxa4 >> µ (-0.86) Depth: 10/18 00:00:05 1915kN >>1.Rd3 Qa7 2.Rd6 Qc7 3.Re6 Qxe5 4.Rxe5 Kh7 5.Re7 c4 >> µ (-0.78) Depth: 10/18 00:00:06 3097kN >>1.Rd1 Qa7 2.Re1 c4 3.Qd6 Rxd7 4.Bxd7 Qxd7 5.Qf8+ Kh7 6.Re7 >> ³ (-0.66) Depth: 10/18 00:00:07 3941kN >>1.Rd1 Qa7 2.Re1 Rxd7 3.Bxd7 Qxd7 4.Qb8+ Kh7 5.Qxb6 Nxh5 6.Qb1+ f5 7.Kf3 >> ³ (-0.62) Depth: 11/20 00:00:09 5853kN >>1.Rd1 Qa7 2.Re1 Rxd7 3.Bxd7 Qxd7 4.Qb8+ Kh7 5.Qxb6 Nxh5 6.Qxa6 Qg4+ 7.Kf1 Nxf4 >> µ (-0.73) Depth: 12/20 00:00:13 10365kN >>1.Qe7 Ng8 2.Qe5 a5 3.Rd3 Qa7 4.Re3 Nf6 5.Qe7 Rxd7 6.Bxd7 Qxd7 >> ³ (-0.59) Depth: 12/20 00:00:20 17432kN >>1.Qe7 Ng8 2.Qe5 a5 3.Rd3 Qa7 4.Re3 Rxd7 5.Bxd7 Qxd7 6.Qb8 Qg4+ 7.Kf1 c4 8.Qxb6 >>Qxh5 >> ³ (-0.58) Depth: 13/20 00:00:23 20655kN >>1.Rd1 Qa7 2.Re1 Rxd7 3.Bxd7 Qxd7 4.Qb8+ Kh7 5.Qxb6 Qg4+ 6.Kf1 Qh3+ 7.Kg1 Nxh5 >>8.Re7 Qf5 9.Qxa6 Nxf4 >> ³ (-0.56) Depth: 13/20 00:00:30 29016kN >>1.Rd1 Qa7 2.Re1 Rxd7 3.Bxd7 Qxd7 4.Qb8+ Kh7 5.Qxb6 Qg4+ 6.Kf1 Qh3+ 7.Kg1 Qxh5 >> ³ (-0.54) Depth: 14/22 00:00:52 52866kN >>1.Qe7 Ng8 2.Qe5 f6 3.Qe6 Qc7 4.Be4 c4 5.Bf5 b5 6.Rxa6 bxa4 7.Rxa4 c3 >> ³ (-0.28) Depth: 14/22 00:01:28 91979kN >>1.Qe7 Ng8 2.Qe5 c4 3.Rd4 c3 4.Rd3 c2 5.Qxb8 Rxb8 6.Rc3 Nf6 7.Rxc2 Rd8 8.a5 bxa5 >> = (-0.08) Depth: 15/24 00:02:05 131403kN >>1.Qe7 Ng8 2.Qe5 Nf6 >> = (0.00) Depth: 16/24 00:03:11 203085kN >>1.Qe7 Ng8 2.Qe5 Nf6 >> = (0.00) Depth: 17/24 00:04:18 277777kN >>1.Qe7 Ng8 2.Qe5 Nf6 >> = (0.00) Depth: 18/24 00:08:06 529114kN >>1.Rxf6 Qxe5 2.fxe5 gxf6 3.exf6 c4 4.Kf3 Kh7 5.Ke4 Kg8 6.Kd4 c3 7.Kxc3 Kh8 8.Kd4 >>Kh7 9.Be4+ Kg8 10.Bf5 >> ² (0.31) Depth: 18/24 00:12:31 827881kN >>1.Rxf6 Qxe5 2.fxe5 gxf6 3.exf6 c4 4.Kf3 Kh7 5.Ke4 Kg8 6.Kd4 c3 7.Kxc3 Kh8 8.Kd4 >>Kg8 9.Kd5 >> ² (0.38) Depth: 19/24 00:13:20 884211kN >> >>(Irazoqui, Cadaqués 24.02.2001) > >I see that crafty solved it for positional reasons. >The main line shows a position when black has material advantage and crafty's >evaluation is positive for white. > >It is also intereting to know if 18.01 is faster because I know that one of the >changes in crafty that was after 18.01 is to avoid the recapture extensions and >it means not doing a special extensions for captures at the same square like >Qxe5 fxe5. > >Uri OK here is 18.01 on a PIII 700MHZ It do not look like it is going faster on 18.01 Analysis by Crafty 18.01: 1.Kg1 Qc7 2.Re6 Qxe5 3.Rxe5 Kh7 4.Re7 c4 5.Kg2 Nxh5 6.Rxf7 µ (-0.96) Depth: 8/21 00:00:02 610kN 1.Kg1 Qc7 2.Qe7 c4 3.Rxf6 gxf6 4.Qxf6+ Kg8 5.f5 Kh7 6.Qxf7+ µ (-1.01) Depth: 9/23 00:00:03 884kN 1.Rd1 Qa7 2.Rd6 Qc7 3.Re6 Qxe5 4.Rxe5 Kh7 5.Re7 c4 µ (-0.78) Depth: 9/23 00:00:03 1118kN 1.Rd1 Qa7 2.Re1 c4 3.Qd6 Rxd7 4.Bxd7 Qxd7 5.Qxd7 Nxd7 6.Re7 ³ (-0.62) Depth: 10/23 00:00:05 2039kN 1.Rd1 Qa7 2.Re1 Rxd7 3.Bxd7 Qxd7 4.Qb8+ Kh7 5.Qxb6 Nxh5 6.Qb1+ f5 7.Kf3 ³ (-0.62) Depth: 11/24 00:00:10 4068kN 1.Rd1 Qa7 2.Rd6 Qc7 3.Re6 Qxe5 4.Rxe5 Kh7 5.Re8 Rxd7 6.Bxd7 Nxd7 7.Re7 ³ (-0.52) Depth: 12/26 00:00:25 10169kN 1.Rd1 Qa7 2.Re1 Rxd7 3.Bxd7 Qxd7 4.Qb8+ Kh7 5.Qxb6 Qg4+ 6.Kf1 Qh3+ 7.Kg1 Qxh5 8.Re7 Qg4+ 9.Kf1 ³ (-0.59) Depth: 13/30 00:01:20 32908kN 1.Rd1 Qa7 2.Re1 Rxd7 3.Bxd7 Qxd7 4.Qb8+ Kh7 5.Qxb6 Qg4+ 6.Kf1 Qh3+ 7.Kg1 Qxh5 8.Qxa6 Qg4+ 9.Kh2 Qxf4+ 10.Kg2 ³ (-0.54) Depth: 14/34 00:02:35 64999kN 1.Qe7 Ng8 2.Qe5 f6 3.Qe6 Qc7 4.Be4 a5 5.Bf5 Rb8 6.Rc6 Qxf4 7.Rxb6 Rd8 ³ (-0.26) Depth: 14/34 00:05:52 143933kN 1.Qe7 Ng8 2.Qe5 a5 3.Rd5 Qa7 4.Qd6 Nf6 5.Re5 Kh7 6.Re7 c4 7.Rxf7 Nxh5 = (-0.15) Depth: 15/37 00:07:32 181697kN 1.Qe7 Ng8 2.Qe5 f6 3.Qe6 Qc7 4.Qd5 Ne7 5.Qe6 Nxc6 6.Qe8+ Kh7 7.Qg6+ Kg8 8.Qe8+ Kh7 = (0.00) Depth: 16/40 00:12:20 282795kN 1.Qe7 Ng8 2.Qe5 f6 3.Qe6 Qc7 4.Qd5 Ne7 5.Qe6 Nxc6 6.Qe8+ Kh7 7.Qg6+ Kg8 8.Qe8+ Kh7 = (0.00) Depth: 17/41 00:21:00 465409kN 1.Rxf6 Qxe5 2.fxe5 gxf6 3.exf6 c4 4.Kf3 c3 5.Ke3 Kg8 6.Kd3 c2 7.Kxc2 Kf8 8.Kd3 Kg8 9.Ke4 Kh7 10.Ke5 ² (0.28) Depth: 17/41 00:28:47 596793kN 1.Rxf6 Qxe5 2.fxe5 gxf6 3.exf6 c4 4.Kf3 c3 5.Ke3 Kg8 6.Kd3 c2 7.Kxc2 Kf8 8.Kd3 Kg8 9.Ke4 Kh8 10.Ke5 Kh7 ² (0.28) Depth: 18/44 00:30:20 640941kN 1.Rxf6 Qxe5 2.fxe5 gxf6 3.exf6 c4 4.Kf3 c3 5.Ke3 Kg8 6.Kd3 c2 7.Kxc2 Kh8 8.Kd3 Kh7 9.Ke4 Kg8 10.Ke5 Kf8 11.f4 ² (0.37) Depth: 19/44 00:40:42 931867kN 1.Rxf6 Qxe5 2.fxe5 gxf6 3.exf6 c4 4.Kf3 c3 5.Ke2 Kg8 6.Kd1 Kf8 7.Kc2 Kg8 8.Kxc3 Kh8 9.Kd4 Kh7 10.Kc4 Kg8 11.Kd5 ² (0.34) Depth: 20/46 01:15:34 1867805kN 1.Rxf6 Qxe5 2.fxe5 gxf6 3.exf6 c4 4.Kf3 c3 5.Ke2 Kg8 6.Kd3 Kf8 7.Kxc3 Kg8 8.f4 Kh7 9.Kd4 Kg8 10.Ke5 Kf8 11.Kd6 Kg8 ² (0.42) Depth: 21/52 03:51:51 1649156kN, tb=4 Torstein New position 1q1r3k/3P1pp1/ppBR1n1p/2p1Q2P/P4P2/8/5PK1/8 w - - 0 1
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