The science journal Nature reports that a mathematician has proven that it takes 17 clues to make a Sudoku.

Gary McGuire of University College Dublin showed this in a proof posted online on January 1st (apparently he wasn’t partying on new year’s eve). This means that sudoku puzzles with 16 or fewer clues do not have a unique solution.

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This entry was posted on Tuesday, January 10th, 2012 at 12:29 am and is filed under Good reads, Linkydinks, Puzzles. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.