The Great Book of Sudoku

Sudokus are extremely satisfying and enjoyable number-placement puzzles that give our brains a great workout. This brilliant collection contains more than 900 puzzles, graded by level of difficulty from beginner to the experienced solver. - Improve your solving skill: Each puzzle is graded, from beginner to expert, so you can enjoy the satisfaction of seeing your skill improve as you work through the levels. - Exercise your brain: Give your mind a great workout as you find where each missing number fits. - Reduce stress: Feel your stress melt away as you focus on these satisfying puzzles.