Author: Uri Blass
Date: 11:16:25 02/19/04
Go up one level in this thread
On February 19, 2004 at 13:54:18, Thorsten Czub wrote: >On February 19, 2004 at 13:38:37, Uri Blass wrote: > >>Junior5 also could find sacrifice against Nimzo when Junior6 could not find it >>and the reason was not throwing knowledge but reducing the value of pawns that >>had positive effects in other positions. >> >>Uri > >when a program makes the same NPS but comes 2 or 3 searches deeper, >it prunes more or uses less knowledge in those positions that do not need this >knowledge. this leads to overseeing things other programs DO SEE because they >have still the full knowledge or do not prune that heavy. I think that pruning more is the way to go and not using less knowledge. programs search too many illogical moves. I did not buy shredder8 so I tried 7.04 on my A1000 Here is the analysis and shredder7.04 needs some minutes to avoid 0-0 French r3k2r/p1qbnppp/1pn1p3/2ppP3/P2P4/2PB1N2/2P2PPP/R1BQ1RK1 b kq - 0 1 Analysis by Shredder 7.04: 11...cxd4 12.cxd4 ² (0.37) Depth: 1/2 00:00:00 11...cxd4 12.cxd4 ² (0.37) Depth: 1/2 00:00:00 11...0-0 ³ (-0.27) Depth: 1/15 00:00:00 11...0-0 ³ (-0.27) Depth: 1/15 00:00:00 11...0-0 12.Bg5 = (-0.09) Depth: 2/15 00:00:00 11...0-0 12.Bg5 Nf5 13.Bxf5 exf5 14.dxc5 = (-0.16) Depth: 3/17 00:00:00 11...0-0 12.Ng5 f5 13.exf6 = (0.10) Depth: 4/17 00:00:00 11...0-0 12.Ng5 h6 13.Bh7+ Kh8 = (0.10) Depth: 4/17 00:00:00 11...h6 12.Bf4 0-0 13.Qe2 = (0.08) Depth: 4/17 00:00:00 11...h6 12.Bf4 0-0 13.Qe2 = (0.08) Depth: 4/17 00:00:00 11...Ng6 12.Bg5 h6 13.Bd8 = (0.07) Depth: 4/17 00:00:00 11...Ng6 12.Bg5 h6 13.Be3 = (0.02) Depth: 4/17 00:00:00 11...Ng6 12.Qe2 0-0 13.Bg5 f5 14.exf6 gxf6 = (0.19) Depth: 5/17 00:00:00 11...0-0 12.Ng5 h6 13.Bh7+ Kh8 = (0.18) Depth: 5/17 00:00:00 11...0-0 12.Bf4 Rac8 13.Qd2 Nf5 14.Bxf5 exf5 15.dxc5 = (-0.14) Depth: 5/17 00:00:00 11...0-0 12.Re1 h6 13.Bf4 Nf5 14.Bxf5 exf5 15.dxc5 = (-0.10) Depth: 6/17 00:00:00 37kN 11...0-0 12.Bf4 Ng6 13.dxc5 Nxf4 = (-0.09) Depth: 7/21 00:00:01 104kN 11...0-0 12.Bf4 f5 13.Qd2 Nxd4 14.cxd4 Qxe5 = (-0.08) Depth: 8/23 00:00:02 330kN 11...0-0 12.Bf4 h6 13.Qd2 Rac8 14.Rfd1 Rfe8 15.Bg6 = (-0.04) Depth: 9/26 00:00:04 598kN 11...0-0 12.Re1 h6 13.Be3 cxd4 14.cxd4 Nb4 15.Bf4 Nxd3 16.Qc1 Nxc1 = (-0.07) Depth: 10/27 00:00:18 2474kN 11...0-0 12.Ba3 Rfe8 13.Re1 Na5 14.Qd2 Rab8 15.Bb2 h6 16.Nh4 Nc4 17.Bxc4 dxc4 = (-0.06) Depth: 11/32 00:00:39 5502kN 11...0-0 12.Ba3 Rfe8 13.Re1 Rad8 14.Qd2 Na5 15.Qf4 Ng6 16.Qg4 Nc4 = (0.08) Depth: 12/33 00:01:03 8906kN 11...0-0 12.Bxh7+ Kxh7 13.Ng5+ Kg6 14.h4 Qc8 15.h5+ Kh6 16.Qf3 Rg8 17.Bd2 Rf8 18.Qg4 Nxd4 19.cxd4 ² (0.27) Depth: 13/39 00:04:14 36973kN 11...Rb8 12.Nh4 cxd4 13.cxd4 Nxd4 14.Qg4 Ndc6 15.Qxg7 Qxe5 16.Qxe5 Nxe5 17.Re1 Nxd3 ² (0.26) Depth: 13/39 00:04:28 38963kN 11...Rb8 12.Ba3 Na5 13.Ng5 h6 14.Qh5 0-0 15.Bh7+ Kh8 16.Nxf7+ Kxh7 17.Qxh6+ gxh6 = (0.14) Depth: 13/39 00:06:24 54137kN (Blass, Tel-Aviv 19.02.2004) Uri
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