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Subject: Re: Qsearch survey

Author: Ed Schröder

Date: 09:55:07 12/30/01

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On December 30, 2001 at 10:57:30, Severi Salminen wrote:

>I just would like to see how other engines do in similar position. So, feed the
>position (1.e4 e5 2.d4 d5) to your engine, perform a 10 ply search and report
>the number of nodes and qnodes. To make sure we count nodes identically, this is
>what I do: I increase nodes if I don't call qsearch() from search() and I
>increase qnodes in the beginning of qsearch(). Like this:
>
>search()
>{
> if(depth<=0)
>   qsearch()
> nodes++;
>.
>.
>}
>
>qsearch()
>{
> qnodes++;
>.
>.
>}
>
>Try to get similar counting scheme so figures are comparable. Here is the
>position:
>[d] rnbqkbnr/ppp2ppp/8/3pp3/3PP3/8/PPP2PPP/RNBQKBNR w KQkq - 0 1
>
>And please tell if you use SEE or not. I'll post my results soon also.
>
>Severi


Rebel:  Total nodes: 4.580.488
        QS nodes   :   747.568

I don't know about SEE, when Rebel evaluates a position I get back the 3 highest
hanging pieces (possible losses) and the 2 highest attacked pieces (threats), so
I don't need SEE, it is build-in the evaluation so to say.

Ed



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