Книга: Expert Sudoku (Addler Ben); Arcturus, 2020

Here's a collection to entertain the more experienced sudoku fan. The puzzles included have been selected to offer a challenging and satisfying solving experience.

• 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.

• Improve your solving skill: Each puzzle is graded so you can enjoy the satisfaction of seeing your skill improve as you work through the levels.