17

This number is a prime.

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It has been proven (January 2012) by Gary McGuire and his collaborators of University College Dublin that 17 is the fewest number of clues that can be provided in a Sudoku puzzle that will lead to a unique solution. [Green]

Submitted: 2012-04-26 19:24:08;   Last Modified: 2012-04-26 19:49:05.
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