These 100 new puzzles—from easy to fiendishly difficult—come with a warning: They are seriously addictive.
You don't need to be a mathematical genius to solve these puzzles; it is simply a question of logic and a little patience.
Beware of pale imitations. These are the original and official Su Doku puzzles by Wayne Gould—New York Post's Su Doku puzzle master and one of Time magazine's Most Influential People.
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About the Author
Wayne Gould is the brains behind Su Doku. A former High Court judge in Hong Kong, he now spends his time developing the puzzle.