Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: It may be that Aristarch 4.5 is as strong or even stronger than Ruffian

Author: Tord Romstad

Date: 13:17:16 10/22/04

Go up one level in this thread


On October 22, 2004 at 15:31:20, Dann Corbit wrote:

>http://wbec-ridderkerk.nl/
>See "Premier Div." drop down.
>
>Elostat output:
>
>   Program                   Elo    +   -   Games   Score   Av.Op.  Draws
> 2 Aristarch 4.50          : 2714   72  81    64    65.6 %   2602   28.1 %
> 6 Ruffian 2.1.0           : 2659   80  61    64    57.8 %   2604   40.6 %
>
>A lot of uncertainty remains, clearly, from the size of the error bars.

It seems to me that Ruffian 1.0.5 is still clearly stronger.  Ratings from a few
of the most
popular public rating lists (notice that in all lists, the error bars are much
smaller than the
above):

                        Rating    +   -  Games   Score   Av.op   Draws
UEL:
 1 Ruffian 1.0.5          2654   18  23   879    66.2%    2537   27.2%
 3 Aristarch 4.50         2602   26  27   507    59.8%    2533   27.6%

AEGT:
 2 Ruffian 1.0.5          2760   46  54   152    63.8%    2662   25.0%
 3 Aristarch 4.50         2749   47  52   152    62.2%    2663   25.7%

HvK Nunn list:
10 Ruffian 1.0.5          2754   19  24   762    66.0%    2639   29.9%
15 Aristarch 4.50         2692   18  25   882    67.1%    2568   24.0%

YABRL:
 7 Ruffian 1.0.1          2649   16  22  1015    67.7%    2520   27.9%
10 Aristarch 4.50         2614   17  19  1117    60.8%    2538   26.6%

Looks rather  convincing to me.

>But a
>very impressive showing.  At any rate, ProDeo, Aristarch, and Ruffian are
>probably the strongest free engines.

ProDeo and Ruffian, yes, but I am not at all sure that Aristarch is number
three.  List
is probably stronger, perhaps also Thinker.  It is also not impossible that the
new versions
of AnMon and Pharaon will be close to the top.

Tord



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.