Author: Ernst Walet
Date: 03:34:51 06/10/00
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On June 09, 2000 at 22:46:40, leonid wrote: >On June 09, 2000 at 20:08:37, Jon Dart wrote: > >>12 ply is about right to see this, but your node counts are way >>above what mine are. So, yes, it seems like you are over-extending >>somehow, or maybe have inefficient move ordering. >> >>--Jon > >Thank for saying that this position demand 12 plies! I tried it first up to 10 >ply but could not reach indicated response. Expected that, maybe, I have some >bug more. Just fixed 5 in the last month. Dreamed to end my cleaning work. > >On AMD 400Mhz. > >Hiarcs look and find indicated response by brute force 8 ply deep. It take 14 >minutes 58 sec. Probably its extensions goes as far as 4 next plies. > >My logic find indicated response only 12 ply deep. Search done by brute force. >No extensions or transpositional tables. Time: 1 hour and 42 minutes. Average >speed: 200200 nps. > >Leonid. On my PIII-450 Hiarcs 7.32 switches to Qb7 in 102 seconds. I let the position run for an hour and a half with the following result: New position 4r1k1/p4ppp/1pq1P3/3p1PPP/3B1Q2/P4NK1/8/3n4 b - - 0 1 Analysis by Hiarcs 7.32: 1...fxe6 -+ (-4.17) Depth: 1 00:00:00 1...fxe6 2.Ne5 -+ (-3.66) Depth: 2/4 00:00:00 1...fxe6 2.f6 -+ (-3.59) Depth: 2/8 00:00:00 1...fxe6 2.Qe5 -+ (-3.32) Depth: 3/11 00:00:00 1...fxe6 2.Qe5 -+ (-3.32) Depth: 3/13 00:00:00 1...fxe6 2.h6 exf5 3.hxg7 Qe6 -+ (-3.52) Depth: 4/17 00:00:00 1...fxe6 2.Qe5 -+ (-3.25) Depth: 5/19 00:00:00 11kN 1...fxe6 2.f6 Rc8 3.f7+ Kf8 4.Bxg7+ Kxg7 5.Qf6+ Kf8 6.Qh8+ Ke7 7.Qf6+ Kd6 8.f8Q+ Rxf8 9.Qxf8+ Kc7 -+ (-2.10) Depth: 5/20 00:00:01 38kN 1...fxe6 2.f6 -+ (-1.85) Depth: 6/21 00:00:02 91kN 1...fxe6 2.f6 -+ (-1.85) Depth: 6/23 00:00:02 101kN 1...fxe6 2.f6 Qb7 3.Qd2 gxf6 4.Bxf6 Qb8+ 5.Kh3 Qd6 6.Qxd1 Qxa3 -+ (-1.94) Depth: 7/23 00:00:07 300kN 1...fxe6 2.f6 -+ (-1.69) Depth: 8/25 00:00:11 482kN 1...fxe6 2.f6 Qb7 3.Qc1 gxf6 4.gxf6 e5 5.Nxe5 Rf8 6.Qxd1 Rxf6 ³ (-0.55) Depth: 8/27 00:00:20 858kN 1...Qb7 2.Qc1 Qe7 3.Qxd1 fxe6 4.Qd3 exf5 5.Qxf5 Qf7 6.Qxf7+ Kxf7 µ (-0.72) Depth: 8/27 00:01:42 4339kN 1...Qb7 2.Qc1 ³ (-0.47) Depth: 9/27 00:02:57 7491kN 1...Qb7 2.Qc1 Qe7 3.a4 Qf8 4.Qxd1 fxe6 5.f6 gxf6 ³ (-0.43) Depth: 9/29 00:03:26 8697kN 1...Qb7 2.Ne5 = (-0.18) Depth: 10/29 00:08:13 20399kN 1...Qb7 2.Ne5 fxe6 3.f6 Rf8 4.Qg4 Qc7 5.Qxe6+ = (-0.16) Depth: 10/30 00:11:19 28667kN 1...Qb7 2.Ne5 = (0.09) Depth: 11/30 00:23:01 58378kN 1...Qb7 2.Ne5 fxe6 3.f6 Rf8 4.h6 g6 5.Qg4 Rd8 6.Qxd1 Qc7 ² (0.55) Depth: 11/30 00:27:45 70055kN Ernst.
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