How many possible Sudoku puzzles are there?

sudoku
Sports Dude asked:

If you were to make all the possible 9 by 9 Sudoku puzzles, how many puzzles would there be.

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Comments (3)    Posted in Mathematics    

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3 Responses to 'How many possible Sudoku puzzles are there?'

  1. D.W. - September 25th, 2008 at 7:18 am

    6,670,903,752,021,072,936,960

  2. Ambe - September 28th, 2008 at 2:57 am

    There are 6,670,903,752,021,072,936,960 different completed 9×9 Sudokus. Of course, there are many different puzzles that can be made from the same completed grid, depending on where the blanks are placed.

  3. sciguy - September 30th, 2008 at 7:57 pm

    theoretically infinate, if one does not constrain onself to the digits 0-9. that said, the aforementioned number is probably the answer you want.


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