SUDOKU 5 (2015)

Give your brain a workout and test your logic skills as you progress through the challenging puzzles in this book. Whether you've already caught the Sudoku bug or are simply interested in finding out what all the fuss is about, Sudoku 5 has something for everyone, with different levels of difficulty. Providing hours of (sometimes infuriating) fun, Sudoku is the perfect distraction to improve your brain power and exercise your mind, keeping your grey matter fit and healthy. All you need is a pen or pencil and some clarity of thought – but beware, these beautifully simple but surprisingly challenging puzzles are fiendishly addictive!