Here is Penguin's latest pocket-sized volume of Sudoku puzzles: the logic game that has taken the world by storm. Pocket Penguin Sudoku 2 contains 201 fiendish brainteasers, ranging from easy to mind-bogglingly difficult. It provides a daily fix for the hardened Sudoku fan and sets an irresistible challenge for novices. But it's more than a game. Sudoku is seriously good for you: it builds your concentration, hones your logic and improves your deduction skills. But be warned: these games are incredibly addictive. Especially now you can take them everywhere with you.