Author: Uri Blass
Date: 01:27:01 07/12/01
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On July 12, 2001 at 04:02:52, odell hall wrote: <snipped> > What a Tactical Monster!!! I don't think any other program finds this move at >such an incredible speed. I believe that Junior is fast in finding it because of different evaluation. It also find another brilliant move that other programs have problem to find: Nxe6 from Chaos-Chess4.0 1974 Chaos - Chess 4.0 rq2k2r/3n1ppp/p2bpnb1/8/Np1N4/1B3PP1/PP2Q2P/R1BR2K1 w kq - 0 1 Analysis by Junior 7(32 mbytes): 16.a3 Qa7 ³ (-0.69) Depth: 3 00:00:00 16.Nc6 Qc7 17.Qc4 ³ (-0.49) Depth: 3 00:00:00 16.Nxe6 fxe6 17.Qxe6+ Be7 = (-0.15) Depth: 3 00:00:00 16.Nxe6 fxe6 17.Qxe6+ Be7 18.Be3 Qb5 ³ (-0.29) Depth: 6 00:00:00 5kN 16.Bxe6 Ne5 17.Bf5 Qa7 = (-0.10) Depth: 6 00:00:00 14kN 16.Bxe6 0-0 17.Bxd7 Nxd7 18.Nc6 Qc7 19.Ne7+ Bxe7 20.Qxe7 Qa7+ 21.Be3 Rfe8 = (0.11) Depth: 9 00:00:00 140kN 16.Nxe6! = (0.20) Depth: 9 00:00:00 206kN 16.Nxe6! fxe6 17.Qxe6+ Be7 18.Re1 Qd8 19.Be3 Nf8 20.Qc6+ N8d7 21.Be6 = (0.24) Depth: 9 00:00:00 345kN 16.Nxe6! ² (0.54) Depth: 12 00:00:03 2150kN 16.Nxe6! fxe6 17.Qxe6+ Be7 18.Re1 Qa7+ 19.Be3 Qc7 20.Bf4 Qa7+ 21.Kh1 Nc5 22.Nxc5 Qxc5 23.Rac1 Qa7 ± (0.91) Depth: 12 00:00:05 3933kN 16.Nxe6 fxe6 17.Qxe6+ Be7 18.Re1 Qd8 19.Bf4 Rc8 20.Bd6 Ng8 21.Bxb4 Nf8 22.Qe5 Nd7 ± (1.05) Depth: 14 00:00:30 20433kN (Blass, Tel-aviv 12.07.2001) Under game condition(90 minutes/40 moves): Threshold=8000 Junior 7 - Blass,U rq2k2r/3n1ppp/p2bpnb1/8/Np1N4/1B3PP1/PP2Q2P/R1BR2K1 w kq - 0 1 Analysis by Junior 7: 16.a3 Qa7 ³ (-0.69) Depth: 3 00:00:00 16.Nc6 Qc7 17.Qc4 ³ (-0.49) Depth: 3 00:00:00 16.Nxe6 fxe6 17.Qxe6+ Be7 = (0.00) Depth: 3 00:00:00 16.Nxe6 fxe6 17.Qxe6+ Be7 18.Be3 Qb5 ³ (-0.29) Depth: 6 00:00:00 5kN 16.Bxe6 Ne5 17.Bf5 Qa7 = (-0.10) Depth: 6 00:00:00 14kN 16.Bxe6 0-0 17.Bxd7 Nxd7 18.Nc6 Qc7 19.Ne7+ Bxe7 20.Qxe7 Qa7+ 21.Be3 Rfe8 = (0.11) Depth: 9 00:00:00 140kN 16.Nxe6! = (0.20) Depth: 9 00:00:00 206kN 16.Nxe6! fxe6 17.Qxe6+ Be7 18.Re1 Qd8 19.Be3 Nf8 20.Qc6+ N8d7 21.Be6 = (0.24) Depth: 9 00:00:00 345kN 16.Nxe6! ² (0.54) Depth: 12 00:00:03 2139kN 16.Nxe6! fxe6 17.Qxe6+ Be7 18.Re1 Qa7+ 19.Be3 Qc7 20.Bf4 Qa7+ 21.Kh1 Nc5 22.Nxc5 Qxc5 23.Rac1 Qa7 ± (0.91) Depth: 12 00:00:05 3921kN 16.Nxe6 fxe6 17.Qxe6+ Be7 18.Re1 Qd8 19.Bf4 Rc8 20.Bd6 Ng8 21.Bxb4 Nf8 22.Qe5 Nd7 ± (1.05) Depth: 14 00:00:30 20421kN 16.Nxe6 fxe6 17.Qxe6+ Be7 18.Re1 Qd8 19.Bf4 Ng8 20.Rac1 Rc8 21.Rxc8 Qxc8 22.Bd6 ± (1.24) Depth: 16 00:03:39 146808kN (Blass, Tel-aviv 12.07.2001) With default treshold I get exactly the same analysis with the same times If the default treshold is counter productive in games than maybe the reason is a bug in retaining the hash tables. I may try to reproduce the Nc3 mistake from Harald Faver's game to see if I can reproduce it with threshold=8000. Uri
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