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Subject: Re: What is the average nodes per second for minimax?

Author: leonid

Date: 13:16:47 06/22/00

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On June 22, 2000 at 13:27:03, Tom Kerrigan wrote:

>On June 21, 2000 at 21:18:07, leonid wrote:
>
>>On June 21, 2000 at 19:03:40, Tom Kerrigan wrote:
>>
>>>On June 21, 2000 at 17:07:06, leonid wrote:
>>>
>>>>On June 21, 2000 at 13:38:41, Tom Kerrigan wrote:
>>>>
>>>>>If you think that material-only evaluation programs are good for anything,
>>>>>you're sadly mistaken.
>>>>
>>>>
>>>>I said only that material evaluation is evaluation about everything in principe.
>>>>About tactics... or just say it. I agree that in actual state of hardware it is
>>>>not enough have only material evaluation, but its importance  will grow as
>>>>rapidly as hardware capacity will improve. Very soon program that have in its
>>>
>>>Only evaluating material has zero importance. Why would you do it when you can
>>>evaluate material AND positional terms with no penalty? Besides, material is
>>>just a rule of thumb, just like any positional term. Thinking that you can make
>>>a good program by only considering material is absurd, no matter how fast your
>>>computer is.
>>>-Tom
>>
>>Do we speak about my program or about general idea? If we speak about my program
>>it is not that interesting, since we will talk only about one program in
>>particular. When we speak about general idea, yes, material echange can say
>>everything. Only through the material echange you can find mate or draw. By the

Was written in the sense: Only using material echange you can already find mate
or draw.

Leonid.

>>same mean you can find all other move in the game, name it positional, tactical
>>or otherwise. We can talk how much computer power we need for the best program
>>right now to find this or other kind of move, but this is something else. Idea
>>is simple - material echange do everything and everywhere. In chess game logic
>>is enough to see everything in it from beginning up to the end.
>
>No, you're not listening. "Material exchange" (why can't you call it
>material-only search or something?) is not the only way to find mates or draws.
>In fact, you don't need to know a damn thing about material to find mates or
>draws. That's my point. As soon as you start evaluating material, why wouldn't
>you also evaluate e.g. doubled pawns at the same time?
>
>-Tom



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