Author: Uri Blass
Date: 07:43:42 11/16/00
Go up one level in this thread
On November 16, 2000 at 10:29:02, Robert Hyatt wrote: >On November 16, 2000 at 09:14:38, Peter Berger wrote: > >>On November 16, 2000 at 09:07:23, walter irvin wrote: >> >>>to me programs fall into 2 list bean counters and knowledge based . >>>bean counters >>>fritz >>>junior >>>nimzo >>>lg2000a >>> >>>knowledge based >>>shredder >>>hiarcs >>>rebel >>>tiger >>>diep >>>crafty >>>king >>> >><snip> >> >>Could you post an example for a position where for example Crafty shows superior >>chessknowledge compaired to Junior ? >> >>pete > > >Since I don't have any commercial program, I can't test them, but here is one >simple test, just for fun. Evaluation after 1 ply search... > >[D]4k///3pp/1P4P///4K w > >This is just one test, of many. The idea is that last year, a GM friend of >mine tried this against a couple of well-known programs, and both preferred >black with the two connected passed pawns. This would be correct if there >were lots of pieces left on the board. But in this position, the white king >can stop the black pawns easily. The black king has a problem. > >It would be interesting to see how other programs handle this. My static >eval is +1.5, for instance, although a 1 ply search will produce the same >score, approximately. > >If you want, we can try a few of these for fun, for anyone willing to >participate. I hate to give away all my 'secrets' of course, but since Crafty >is open source, nothing is really secret. :) The evaluation of my Junior5.9 after 1 ply search is +0.58 for white The evaluation of hiarcs7.32 after 1 ply is +5.27 for white The evaluation of fritz5.32 after 1 ply is +0.03 for white I think that it is better to take the following position for testing [D]4k3/8/8/3pp3/8/8/1P4P1/4K3 w - - 0 1 Uri
This page took 0.01 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.