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mental_floss, the magazine for trivia lovers, teams up with sudoku master Frank Longo to bring you a collection of well over 200 superbly stimulating sudoku puzzles suited for newbies and experts alike. The rules of this numeric game are simple, but the challenges increase with every puzzle. Who knows? Perhaps the next great sudoku master will be you. Make mental_floss Sudokuan essential part of your daily mental hygiene!
Frank Longo is a freelance puzzle creator who lives in Hoboken, New Jersey. He has had more than 3,000 puzzles published since 1993 and written many books for Sterling, including Master Ninja Sudoku, Beyond Black Belt Sudoku, and Beach Blanket Sudoku, as well as crossword books. He is known for being able to produce sudoku that are diabolically difficult, yet fair, requiring the solver to use advanced techniques not found in typical newspaper and magazine puzzles.