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Sudoku Programming with C by Giulio Zambon

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CHAPTER 16

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Puzzle Statistics and More Puzzles

According to Wikipedia, the total number of possible solved Sudokus is a staggering 6,670,903,752,021,072,936,960 (http://en.wikipedia.org/wiki/Sudoku, accessed on February 6, 2015). Moreover, it is possible to create many different puzzles resulting in each one of the 6.67 sextillions of solved Sudokus. Therefore, you might be disappointed that the Generator as described in the previous chapter can only produce up to 2,147,483,648 different puzzles because that is the number of different pseudorandom seeds you can choose from.

Although more than two billion puzzles seem enough for any practical purpose, ...

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