The puzzles in the Sudoku puzzle book are usually categorized into one or more categories, such as "easy", "medium", or "hard", to make it easier for the player to select a suitable puzzle. The book also often includes instructions on how to solve Sudoku puzzles and tips that can help players improve their skills.
A Sudoku puzzle book is a great way to unplug and train the brain while on the go or taking a break from technology. It is also a great gift for friends or family members who enjoy playing Sudoku.