Sudokus are the ever-popular number placements puzzles that give your brain a workout. Spanning a number of difficulty levels, this collection comes in an elegantly designed package with an elastic strap, making it the perfect gift for yourself or others.• 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 puzzle-lovers. ABOUT THE SERIES: Arcturus Elegant Puzzles are beautiful pocket-sized puzzle books, presented with elegant cover designs and elastic book bands to hold the pages closed. This pretty package makes a perfect gift.