Author: Joseph Ciarrochi
Date: 17:34:15 12/21/05
Go up one level in this thread
Based on these posts, It seems like all the programs except rybka and fritz 9 think that white has a strong advantage. (rybka at depth = 17 as +.48, which is a typical white advantage, but not that strong). I think these non-rybka engines are getting it wrong....if you look at (http://www.chesslab.com/PositionSearch.html), black and white are close to even(33% white; 25% black) (granted based on only about 12 games). Dann, how many games was your "57% for white" based on? Also, if you pit the engine against itself, there does not appear to be a strong white advantage. i.e. white seems to only win about 50% ((i'll update this after 40 or so games of different engines playing themselves) How much can we trust engines to evaluate opening variations? best Joseph On December 21, 2005 at 20:05:33, John Merlino wrote: >On December 21, 2005 at 19:03:43, Dann Corbit wrote: > >>On December 21, 2005 at 18:32:52, Dann Corbit wrote: >> >>>Which results in this position: >>>[D]rnb1kb1r/pp2pppp/1qp2n2/8/3P4/2N2N2/PPPB1PPP/R2QKB1R w KQkq - 0 7 >> >>White gets 57/5% of the points, in my database (well above average). >> >>Preferred moves seem to be Bd3, Bc4, Na4 >>I see Rb1 played occasionally in my database, but it looks inferior. > >CM9000's opening book ends at 6...Qb6. CM9_R1 on a P4-2.4 likes the position >very much for White and says this: > >Time Depth Score Positions Moves >0:00 1/6 1.39 39467 7.Bd3 c5 8.Bb5+ Nbd7 9.dxc5 Qxc5 > 10.Be3 Qb4 >0:00 1/6 1.40 42928 7.Na4 Qd8 8.Bd3 b5 9.Nc5 e5 10.O-O > exd4 >0:00 1/7 1.29 58085 7.Na4 Qc7 8.Bd3 Nbd7 9.O-O e5 10.Qe2 > Bd6 >0:01 1/8 1.19 122963 7.Na4 Qc7 8.Bd3 e6 9.O-O Bd6 10.Nc5 > O-O 11.c4 >0:02 1/8 1.46 266962 7.Bd3 Qxb2 8.Rb1 Qa3 9.O-O Nbd7 > 10.Rb3 Qa5 11.Qe2 >0:04 1/9 1.27 634459 7.Bd3 e6 8.O-O Be7 9.Rb1 O-O 10.Qe2 > c5 11.d5 Bd6 >0:11 1/10 1.44 1610449 7.Bd3 e6 8.O-O Be7 9.a4 O-O 10.a5 > Qd8 11.Qe2 Nd5 >0:29 1/11 1.24 4567995 7.Bd3 e6 8.O-O Bd6 9.a4 O-O 10.a5 > Qc7 11.Qe2 Ng4 12.h3 Nf6 >1:35 1/12 1.36 15184957 7.Bd3 e6 8.O-O Bd6 9.a4 O-O 10.Qe2 > Nbd7 11.a5 Qd8 12.Ne4 Nxe4 13.Qxe4 > >jm
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.