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jaychess
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#1 | Posted: 12 Jun 2008 05:24
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How many different positions can occur in a game of chess? I have been wondering about it for a long time.
captain_chess
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#2 | Posted: 12 Jun 2008 13:45
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That's quite a complicated question.

Depending on how many moves have been played, the answer will be hugely different.

If you talking about an average 40 move game. I read somewhere your looking at 10 to the power of 120 number of moves.

Just think of it 10 x 10 x 10 x 10 x ............ 120 times. Which ends up a stupidly large figure.
chesslovers
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#3 | Posted: 20 Nov 2008 19:41
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RYBKA the program's most sophisticated computer chess world, in every match can analyze up to 2 million steps.
nf3xk_____gg
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#4 | Posted: 21 Nov 2008 05:59
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No one knows exactly since chess remains an unsolved game. According to http://ieet.org/index.php/IEET/more/dvorsky20061208/, the number of legal positions is between 10^(43) and 10^(50).