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

Author: Vasik Rajlich

Date: 07:37:29 12/05/05

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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

Very clever :) I also like to crack engine q-searches. You will find Rybka's a
bit more difficult than most. In fact, I dare say impossible. ;)

Re. nps, I am thinking about artificially doubling it. Kind of like what Junior
did with their depths. I got already several emails asking what is wrong with
Rybka or if there was an installation problem ..

Vas

• Re: A note about Rybka's "speed" and variation display Ryan B. 17:38:10 12/05/05
  • Re: A note about Rybka's "speed" and variation display Zappa 20:04:04 12/05/05
    • Re: A note about Rybka's "speed" and variation display Ryan B. 21:11:22 12/05/05
      • Re: A note about Rybka's "speed" and variation display Uri Blass 21:21:45 12/05/05
• Re: A note about Rybka's "speed" and variation display Joachim Rang 13:46:57 12/05/05
  • Re: A note about Rybka's "speed" and variation display Daniel Shawul 20:18:06 12/05/05

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