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Sharpen your mind with Sudoku puzzles!Sudoku is fun, relaxing and will keep your mind active for hours.We designed this book specially for you:Suitable for Beginner, Intermediate and Advanced Sudoku playersGreat variety of puzzles: 50 Easy, 125 Medium, 125 Hard, 125 Advance and 125 ExtremeIncludes bonus puzzles: 5 Flower Sudoku Puzzles4 puzzles per pageLarge print9 x 9 gridSolutions at the end of every levelPerfect as a gift for the whole family and friends.With more than 500 Sudoku, this collection will surely keep you busy for hours. Are your ready for the challenge?