Sudokus are the ever-popular number placement puzzles that give your brain a workout. Spanning a number of difficulty levels, this collection comes in an elegantly designed, pocket-sized edition with an elasticated strap, making it perfect for puzzling on the go. - EXERCISE YOUR BRAIN: Give your mind a great workout as you pit your wits against these number-placement teasers.- REDUCE STRESS: Feel your stress melt away as you focus on these satisfying puzzles.- GIFT EDITION: Designed with a stylish cover, this collection would make a brilliant gift for all