Do you like to use your spare moments indulging in Sudoku? If so, Colormazen Hard Sudoku Puzzle Book will be your perfect take-anywhere companion. With 200 puzzles guaranteed to sharpen your mind and keep you thoroughly entertained, this collection is a real treat for anyone who loves Sudoku. Are you ready to rise to the ultimate brain-training challenge? Working the puzzles in this book can provide a vigorous mental workout for virtually everyone from teenagers to senior citizens, all while fitting within the theme of Sudoku. Included in Colormazen Hard Sudoku Puzzle Book Volume 5: - 200 Hard Sudoku Puzzles -- Large Print 8" x 11.5" Book (21.59 x 27.94 cm) -- Full Instructions and Sudoku Tips. -- Sudoku Solutions. -- And so much more! Activate your brain cells and grab a pencil - Colormazen Hard Sudoku Puzzle Book Volume 5 is here to provide you hours of challenging entertainment, one page at a time!