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: Dann Corbit

Date: 13:58:25 10/22/04

Go up one level in this thread


On October 22, 2004 at 16:17:16, Tord Romstad wrote:

>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.

Thinker boggles my mind.  The size of TSCP and the strength of Ruffian.

>It is also not impossible that the
>new versions
>of AnMon and Pharaon will be close to the top.

Here is a quick look from a contest I ran over the night:
  Program       Elo    +   -   Games   Score   Av.Op.  Draws
1 Ruffian_105 : 2671  310 161     8    62.5 %   2582   50.0 %
2 Delfi       : 2600  207 207     8    50.0 %   2600   50.0 %
3 Pharaon     : 2600  272 272     8    50.0 %   2600   25.0 %
4 AnMon_550   : 2600  343 343     8    50.0 %   2600    0.0 %
5 Glc3034     : 2529  161 310     8    37.5 %   2618   50.0 %



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.