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Subject: Re: Hiarcs 7.32's Depth compared to Deep Thought

Author: Stefano Gemma

Date: 23:26:22 08/23/00

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On August 23, 2000 at 22:10:40, Joshua Lee wrote:

>I was wondering what Ply equivalent for Comercial programs to equal Deep
>Thought's at 11 and 16?
>In Monty Newborn's book Kasparov versus Deep Blue it says on page 156 that
>Deep Thought 0.02 searched at 1,440,000Nodes per second to a Depth of 10 in
>typical middlegame positions(whatever those are smirk) and that many lines were
>searched to a depth of 15.
>
>While not the same as Deep Thought of 1989, I have seen it as searching 11 and
>12 Ply against Kasparov. At a rate of 2,160,000Nodes per second it says that DT
>looked between 200 and 500Million positions per move, which is impossible
>considering it was Game in 90 and for Game 1 and according to the book after
[...]

I don't think that this is impossible. On a Pentium 450 MHz machine, my new
assembly engine can reach about 12 million positions per second. But this
version of the engine has the simplest possible evaluation function and it is
very very weak. A programmer better than me and with a faster hardware can easly
reach the numbers you've said, using more complex evaluation.

Ciao!!!

PS: the new engine is based on the Drago 16 bit engine, the sources are still
available for free on www.linformatica.com



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