Sudokus are the ever-popular number placements puzzles that give your brain a workout. Spanning five levels of of difficulty, this collection of more than 200 puzzles is sure to keep you entertained for hours.

• 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 out there.