Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: A note about Rybka's "speed" and variation display

Author: Keith Hyams

Date: 04:30:51 12/05/05

Go up one level in this thread


On December 05, 2005 at 07:19:25, Gian-Carlo Pascutto wrote:

>It seems to me that Rybka's seemingly slow speed is caused by not counting
>quiescent nodes as search nodes.
>
>You can observe that Rybka's nodes per second drops dramatically in positions
>where there are lot of forced check sequences.
>
>I am actually pretty sure of this because of 2 reasons:
>
>1) it never displays the parts of the variation coming out of the quiescent
>search
>2) it can solve mates with an unrealistically small nodecount
>
>--
>GCP
Thank you for that explanation. I have run Rybka on a 2.8 Celeron in both
Shredder 8 and Shredder Classic. Both interfaces show Rybka clocking less than
50kn per second. However it is still doing well in a bullet match vs
Fruit2.2.1........



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.