Author: Vincent Diepeveen
Date: 07:27:28 05/27/05
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On May 26, 2005 at 17:19:58, Charles Roberson wrote: >On May 26, 2005 at 10:40:04, Darrel Briley wrote: > >>There's another article on Chessbase site today concerning the upcoming match. >> >>http://www.chessbase.com/newsdetail.asp?newsid=2412 >> >> >>-1 second to analyse 200 million chess moves and chose the best one. This >>includes projecting the game 18-40 moves head (6 more than Deep Blue) > > Hmmm, lets do the math. > 200 million nps for 3 minutes = 200M * 60 * 3 = 36 Billion Nodes. > > Now, lets assume that their Effective Branch Factor is 2. > 2 to the 35 is over 34 billion. This indicates 35 ply in 3 minutes at an > EBF of 2. Now, 35 ply is 17.5 moves. > Now, assuming they are giving us average numbers this means that in the > middle game it will project much less than 17.5 moves. > > So, do we believe that they have the EBF down to 2 all the time? [small cough] Deep Blue searched 10-12 ply
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