New York Post Fat-Free Su Doku: The Official Utterly Addictive Number-Placing Puzzle

These 100 new puzzles&#8212from easy to fiendishly difficult&#8212come 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.