Author: Ulrich Tuerke
Date: 13:07:22 01/03/01
Go up one level in this thread
On January 03, 2001 at 14:34:13, Dann Corbit wrote: >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. Yes, these techniques are older than you think. AFAIK, the null move had been suggested for the 1st time by Goetsch and Campbell in 1990. The development of alpha beta dates back to the early 60ers; it seems that it had been suggested independently by several groups. Uli
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