Are you ready for the next Sudoku challenge? The 'Everything' 15-Minute Sudoku Book takes these incredibly addictive number puzzles to the next level! Look inside to the get the skinny on rules, strategy, and helpful advice that is sure to make you a master solver - then set your stopwatch and start puzzling! But, don't worry if you can't solve each puzzle in fifteen minutes or less; by the time you finish this book, you'll be the speedy, speedier, speediest Sudoku solver around!