Author: Derek
Date: 06:50:31 01/11/06
Go up one level in this thread
I found a very odd occurence in this position. Rybka 1.0 Beta 32-bit prefers 70 Kc6, while Rybka 1.0 Preview 32-bit prefers 70 Kc5. Which version is correct? More importantly, which version can be considered stronger? Has anyone else noticed differences in strength between the two of these? On January 11, 2006 at 09:41:42, K. Burcham wrote: > > >With hash clear Rybka will not play blunder 70.Rb4 > > [D] 8/8/8/1K4pk/3R3N/5N2/1q6/8 w - - 0 1 > >Rybka 1.0 Beta 32-bit: > >70.Kc6 > = (-0.20) Depth: 3 00:00:00 >70.Kc6 > ³ (-0.26) Depth: 4 00:00:00 >70.Kc6 gxh4 > ³ (-0.26) Depth: 5 00:00:00 >70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 > ³ (-0.26) Depth: 6 00:00:00 11kN >70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 > ³ (-0.26) Depth: 7 00:00:00 25kN >70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 > ³ (-0.26) Depth: 8 00:00:00 50kN >70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5 > ³ (-0.26) Depth: 9 00:00:00 96kN >70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5 > ³ (-0.26) Depth: 10 00:00:01 220kN >70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5 > ³ (-0.26) Depth: 11 00:00:03 566kN >70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5 > ³ (-0.26) Depth: 12 00:00:05 886kN >70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5 > ³ (-0.26) Depth: 13 00:00:08 1485kN >70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5 > ³ (-0.26) Depth: 14 00:00:14 2566kN >70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5 > ³ (-0.26) Depth: 15 00:00:23 4536kN >70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5 > ³ (-0.26) Depth: 16 00:00:41 8244kN >70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5 > ³ (-0.26) Depth: 17 00:01:12 14588kN >70.Kc6 gxh4 71.Rxh4+ Kg6 72.Nd4 Qc3+ 73.Kd7 Qa5 74.Rg4+ Kh5 > ³ (-0.26) Depth: 18 00:01:53 23521kN > >With full hash > >Rybka 1.0 Beta 32-bit: > >70.Rb4 Qa3 > ³ (-0.26) Depth: 3 00:00:00 >70.Rb4 Qa3 > ³ (-0.26) Depth: 4 00:00:00 >70.Rb4 Qa3 > ³ (-0.26) Depth: 5 00:00:00 >70.Rb4 Qc2 71.Rc4 > ³ (-0.26) Depth: 6 00:00:00 1kN >70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 > ³ (-0.26) Depth: 7 00:00:00 2kN >70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 > ³ (-0.26) Depth: 8 00:00:00 4kN >70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 > ³ (-0.26) Depth: 9 00:00:00 10kN >70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 > ³ (-0.26) Depth: 10 00:00:00 22kN >70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 > ³ (-0.26) Depth: 11 00:00:01 49kN >70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+ > ³ (-0.26) Depth: 12 00:00:01 106kN >70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+ > ³ (-0.26) Depth: 13 00:00:01 270kN >70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+ > ³ (-0.26) Depth: 14 00:00:03 588kN >70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+ > ³ (-0.26) Depth: 15 00:00:06 1154kN >70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+ > ³ (-0.26) Depth: 16 00:00:12 2302kN >70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+ > ³ (-0.26) Depth: 17 00:00:24 4679kN >70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+ > ³ (-0.26) Depth: 18 00:00:55 10801kN >70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+ > ³ (-0.26) Depth: 19 00:02:18 26314kN >70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+ > ³ (-0.26) Depth: 20 00:04:46 54415kN >70.Rb4 Qc2 71.Rc4 Qe2 72.Nxg5 Kxg5 73.Kc5 Qe5+ 74.Kc6 Qe8+ > ³ (-0.26) Depth: 21 00:09:18 105774kN > >kburcham
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.