Sudokus are an ever-popular choice among solvers of all abilities. Inside the puzzles span a number of difficulty levels, and it comes in a handy pocket-sized package so you can pop it in a bag for puzzling fun 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.

• POCKET-SIZED: This handy layout is perfect for carrying on your travels or just to keep by your bedside.