Hard Sudoku puzzle book: 400 Challenging Sudoku Puzzles Hard to Extremely Hard - Brain Games - Relax and Solve - Paperback

by George Greig (Author)

Hard Sudoku puzzle book

is a perfect funny Sudoku book for adults.

Would you like to improve your logical skills? Love hard Sudoku puzzles? Then you'll love this book

Why play Sudoku?

✓ Sudoku gives your brain the ultimate workout.

✓ It keeps you and your mind healthy and productive.

✓ It helps to maintain and improve your memory.

✓ It also can increase your concentration and focus.

• 400 enjoyable Hard Sudoku puzzles
• Hard level: 200 puzzles
• Extremely Hard level: 200 puzzles
• Keeps your mind active and performing well.
• Suitable for all levels: beginner to expert