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Subject: Re: Fossil chess programs of interest

Author: Dann Corbit

Date: 11:34:13 01/03/01

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On January 03, 2001 at 08:25:01, Ulrich Tuerke wrote:

>On January 03, 2001 at 08:01:42, Uri Blass wrote:
>
>>On January 03, 2001 at 03:44:36, Ulrich Tuerke wrote:
>>
>>>On January 03, 2001 at 02:42:33, Dann Corbit wrote:
>>>
>>>>I found Nimzo and Minimax from 1993 by Chrilly Donninger (C, Basic and assembly
>>>>sources) somewhere on the net.
>>>>
>>>>Before invention of Alpha-Beta, I think, but interesting early programming
>>>>efforts.
>>>
>>>Nimzo and Minimax "Before invention of Alpha-Beta" ? You are kiddin' , aren't
>>>you ?
>>>
>>>Uli
>>
>>I guess that Dan meant "before Chrilly started to use the alpha beta".
>>
>>Uri
>
>I do not think that Chrilly has ever written a program not using alpha beta.
>The above mentioned 2 programs definitely use it.

You are right.  The programs were written in 1993 and I thought alpha-beta was
not invented until 1995, but maybe that was NULL MOVE or something.  Anyway, you
are right, it is definitely using alpha-beta.



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