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Subject: Hiarcs 9.6 probably +30-40 ELO up on 9.0

Author: George Sobala

Date: 13:48:44 01/19/05

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On the basis of games I have seen so far, my guess is that Hiarcs 9.6 is about
30-40 ELO stronger than 9.0

I am currently playing a match:
Hiarcs 9.6 on 1.25GHz G4 eMac
v
Gandalf 6 on 1.6GHz Centrino

On comparing the nps on the G4 and the Centrino for Hiarcs, Deep Sjeng,
Ruffian-2 and Fruit-2 I reckon the Centrino is on average about 2.4x faster than
the G4 for chess calculation. This gives Gandalf a rating boost (conservatively)
of 40 ELO by playing on the faster machine. Despite this, Hiarcs 9 is currently
winning:

  Program                    Score     %    Av.Op.  Elo    +   -    Draws

  1 Hiarcs                 :  19.0/ 35  54.3   2585   2615  117  82   40.0 %
  2 Gandalf                :  16.0/ 35  45.7   2615   2585   82 117   40.0 %

If you go by the CSS Rating list
http://www.computerschach.de/magazin/rangliste_english/
this would give Hiarcs 9.6 a rating around 2725 (note that H9.0 LOST its
individual match v Gandalf on equal hardware in that rating list)

Hiarcs stunning performances against Ruffian and Deep Sjeng on the Mac are in
the same ballpark, or better - I think a guess of CSS 2725 is fairly
conservative.

On SSDF rating list Gandalf and Hiarcs are about equal on equal hardware, so
here the results would suggest a leap of >50 points - but SSDF are classic chess
games not blitz, Hiarcs is a better blitzer than classic engine, and I have been
measuring mostly blitz performance.

I know that this is all speculation, the number of games are still few, and
error bars are large, but it is fun to speculate, and life is short!



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