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Subject: Re: Rybka nps - 30knps

Author: Ryan B.

Date: 18:47:09 02/06/06

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On February 06, 2006 at 17:20:00, Alvaro Jose Povoa Cardoso wrote:

>Some time ago I saw someone reporting (don't remember if it was here) Rybka
>doing 30Knps, while crafy 19.x doing 800Knps and Fritz8 doing over a million nps
>on his pc while beating both crafty and fritz.
>
>Over the years computer programmers said that nps was an importante factor in an
>engine performance, (and I agree, look at Deep Blue and Hydra).
>In face of Rybka nps, my question is:
>What the hell is going on?
>In this department Rybka seams to prove that nps isn't a factor for performance
>at all.
>
>Please state you opinion on this.
>
>best regards,
>Alvaro Cardoso

Rather it is to hide extra hidden search or for marketing propaganda I do not
know but I do know Rybka manipulates its node count.  What is really important
is the tactical strength of Rybka not the NPS.  It will be interesting to see
what other engines have similar success after going back to try “old” ideas.
Also not that Rybka is bad in endgames, I think it is rather good, but it will
be interesting to see how Vas handles the endgame issues in Rybka.  It does not
seem that it will be as simple as just adding endgame knowledge.


Ryan




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