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Subject: Re: DEEP BLUES AVERAGE PLY?

Author: Gian-Carlo Pascutto

Date: 11:51:17 08/21/02

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On August 21, 2002 at 14:44:37, Robert Hyatt wrote:

>>Please look at page 5 very carefully 12.2 ply it says.
>
>Yes.  And take the logs and add up the _first_ number from each iteration
>and divide by N.  Guess what you get?  12.2...
>
>Which was the software part of their search.

They certainly don't say the last.

A bit further, you can see that a nominal depth of 12 compromised 8 ply
nominal in software. Add 4-5 hardware ply and you get 12-13 ply.

8 ply in software, plus hardware plies. Not 12 ply in software plus
hardware plies.

The paper is pretty conclusive that they were not searching 18 ply
nominally, but only 12 ply. They even literally wrote it.

--
GCP



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