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Subject: Re: How many Ply ahead?

Author: Dave Dory

Date: 06:22:11 10/03/99

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On October 02, 1999 at 11:06:36, Joshua Lee wrote:

>I was wondering another question, if you had fast enoughh hardware to run Hiarcs
>7.32 to the same middlegame, endgame,etc ply that Deep Thought 1 searched to
>(the one that played Kasparov the first time  in '89) what depth complete would
>hiarcs 7.32 have to search to and   what kind of computer? I think 12
>complete???  thankyou

Within the same time constraints, no computer could match DB, then or now, IMHO.

Because of DB's heavy use of search extensions, any answer on your second
question is moot.

See Ed's post re: search comparison of two programs by ply depth. (Speed of
Hiarc's...)

Unless you can eliminate the search extensions (and if you do you have certainly
changed the whole program), you can't make real comparisons between programs
searching the same number of ply. The extensions make all the difference!

Dave



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