Author: Martin Giepmans
Date: 10:05:19 08/19/04
Go up one level in this thread
On August 19, 2004 at 06:57:16, Uri Blass wrote: >Fritz8 needs a very long time to find a known combination that was played by a >19 year old player in 1929(neidorf sorry if I mispell his name) > >A3000 512 mbytes hash > >New game >[D]r1b2rk1/pp1n2pp/2p1p3/3p1pNq/2PP1Pn1/3BP1P1/PP2N1Kb/R1BQ1R2 b - - 0 1 > >Analysis by Fritz 8: > >1...Ndf6 2.Nf3 Ne4 3.Qc2 dxc4 4.Bxe4 fxe4 5.Qxe4 > µ (-1.28) Depth: 7/28 00:00:00 88kN >1...Ndf6-- > µ (-1.00) Depth: 8/28 00:00:00 210kN >1...Ndf6 2.Rh1 Ne4 > µ (-1.00) Depth: 8/28 00:00:00 252kN >1...dxc4! > µ (-1.03) Depth: 8/28 00:00:00 322kN >1...dxc4! > µ (-1.19) Depth: 8/28 00:00:00 335kN >1...dxc4 2.Bxc4 Nb6 3.Bb3 Nd5 4.Qd3 h6 5.Nf3 Rd8 > µ (-1.25) Depth: 8/28 00:00:00 380kN >1...dxc4-- > µ (-0.97) Depth: 9/33 00:00:00 718kN >1...dxc4 2.Bxc4 Nb6 > µ (-0.97) Depth: 9/33 00:00:00 755kN >1...Ndf6! > µ (-1.00) Depth: 9/33 00:00:00 987kN >1...Ndf6 2.Rh1 Ne4 3.Nh3 Rf6 4.Bxe4 fxe4 5.Nc3 dxc4 6.Rxh2 > µ (-1.06) Depth: 9/33 00:00:01 1071kN >1...Ndf6-- > µ (-0.78) Depth: 10/35 00:00:02 2158kN >1...Ndf6 2.Rh1 Ne4 3.Nh3 b6 4.Qa4 Bb7 5.Rxh2 Nef2 6.Qc2 Nxd3 > µ (-0.72) Depth: 10/35 00:00:02 2913kN >1...dxc4! > µ (-0.75) Depth: 10/35 00:00:02 2973kN >1...dxc4! > µ (-0.91) Depth: 10/35 00:00:02 3014kN >1...dxc4! > µ (-1.22) Depth: 10/35 00:00:02 3093kN >1...dxc4-- > µ (-0.94) Depth: 11/35 00:00:05 6018kN >1...dxc4 2.Bxc4 Nb6 > µ (-0.94) Depth: 11/35 00:00:05 6231kN >1...Ndf6! > µ (-0.97) Depth: 11/38 00:00:11 12609kN >1...Ndf6 2.Rh1 dxc4 3.Bxc4 b5 4.Bb3 c5 5.Bxe6+ Bxe6 6.Nxe6 Nd5 7.Qe1 Ngxe3+ >8.Bxe3 > µ (-1.03) Depth: 12/36 00:00:17 19947kN >1...Ndf6-- > µ (-0.75) Depth: 13/40 00:00:46 53059kN >1...Ndf6 2.Rh1 dxc4 > µ (-0.75) Depth: 13/42 00:00:52 60723kN >1...dxc4! > µ (-0.78) Depth: 13/42 00:00:54 62422kN >1...dxc4 2.Bxc4 Nb6 3.b3 Nxc4 4.bxc4 c5 5.Rh1 b5 6.dxc5 Bb7+ 7.e4 bxc4 8.Qd7 Bc8 >9.Qd6 Ne3+ > µ (-0.97) Depth: 14/41 00:02:20 164348kN >1...dxc4 2.Bxc4 Nb6 3.b3 Nxc4 4.bxc4 c5 5.Rh1 b5 6.d5 bxc4 7.Nf3 Bb7 8.Nc3 exd5 >9.Rb1 Nxe3+ 10.Bxe3 > µ (-0.78) Depth: 15/47 00:05:24 385404kN >1...Ndf6! > µ (-0.81) Depth: 15/47 00:06:37 471628kN >1...Ndf6 2.Nf3 dxc4 3.Bxc4 Ne4 4.Qe1 b5 5.Bd3 c5 6.Bxb5 Rb8 7.Qa5 Bb7 8.Bd7 Nef2 > µ (-0.84) Depth: 15/47 00:07:13 514726kN >1...Ndf6 2.Nf3 Ne4 3.Bxe4 dxe4 4.Ne5 Rf6 5.Nxg4 fxg4 6.Rh1 Rh6 7.Ng1 e5 8.fxe5 >Be6 9.Qb3 b5 > µ (-0.75) Depth: 16/45 00:17:28 1244906kN >1...dxc4! > µ (-0.78) Depth: 16/45 00:18:07 1291980kN >1...Bg1! > µ (-0.81) Depth: 16/50 00:36:23 2609307kN >1...Bg1! > µ (-0.97) Depth: 16/50 00:37:55 2720438kN >1...Bg1! > µ (-1.28) Depth: 16/50 00:39:13 2814439kN >1...Bg1 2.Nxg1 Qh2+ 3.Kf3 e5 4.cxd5 e4+ 5.Bxe4 fxe4+ 6.Kxe4 Ndf6+ 7.Kd3 Nf2+ >8.Rxf2 Qxf2 9.dxc6 bxc6 10.e4 > -+ (-1.72) Depth: 16/50 00:46:12 3318206kN > >(, MyTown 19.08.2004) My Spider plays Bg1 after 22 seconds (AMD 2000 XP) and sticks to it but when I force other moves (d5xc4, Ndf6) and let the engine run for a few minutes it turns out that the scores for these moves are nearly the same. So, it probably depends on relatively small differences in the evaluation function if an engine will "find" Bg1 fast or need much time for it. BTW, I think it was Najdorf. :) Martin
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