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Subject: Re: How many moves? Here is one approximation

Author: Jari Huikari

Date: 04:07:57 02/17/00

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On February 15, 2000 at 14:03:16, Phil Richard wrote:

>Has anyone ever calculated the exact numbers of moves
>possible in a game of chess?
>
>There's a lot of "0's"
>
>I heard it's more than the number of Atoms that make Planet earth.

I found one approximation of belgian mathematician Kreitschik. He
thought that an average game is 40 moves and that for first five moves
there are about 20 legal moves to choose, and 30 changes for the rest 35
moves. Number of different games would then be
(20*20)**5 + (30*30)**35, which is about 2E116.
(2000000000000000000000000000000000000000000000000000000000000
 00000000000000000000000000000000000000000000000000000000)

					Jari



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