The Great Book of Sudoku (Saunders Eric); Arcturus, 2021

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.

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