Computer Chess Club Archives




Subject: Re: An MTD(f) question about NULL MOVE searching

Author: Fabien Letouzey

Date: 06:13:07 07/16/04

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On July 16, 2004 at 09:07:15, Aivaras Juzvikas wrote:

>as i understand a node is a pv node if beta != alpha + 1

Yes, but a PV node does not necessarily end up in the PV (e.g. fail high).
Therefore "PV node" and "PV" are different concepts.

I think Vasik was talking about null moves in the PV, and I gave my opinion
about this topic.  Maybe I misunderstood his post though.


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