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Subject: Re: Q&A with Feng-Hsiung Hsu

Author: Dave Gomboc

Date: 04:05:42 10/14/02

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On October 13, 2002 at 15:35:12, Vincent Diepeveen wrote:

>On October 13, 2002 at 14:40:12, James Swafford wrote:
>
>I wonder why. there is just one person ever in this whole
>planet who said 12(6) = 18 ply, and that's robert hyatt.

Bullshit -- I said this years ago, after asking a member of the DB team.

Hsu just said it himself too:

EeEk(* DM) kibitzes: next question: Seems like people wants to know
what the exact meaning of ""12(6)" in the Deep Blue log files, can you
explain this?
CrazyBird(DM) kibitzes: 12(6) means 12 plies of brute force (not
counting the search extensions & quiescence).
CrazyBird(DM) kibitzes: 6 means the maximum hardware search depth
allowed.
CrazyBird(DM) kibitzes: this means that the PV could be up to 6 plies
deeper before quiescence.

Apparently that's not clear enough for you?  The PV can be up to 6 plies
_deeper_.  Deeper than what?  Than the software search of 12 plies, of course!

Dave



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