4,000 PUZZLES (yes, four THOUSAND ): This is truly a Sudoku book like no other. With 4,000 puzzles inside, it is guaranteed to provide you with hundreds of hours of fun.4 DIFFICULTY LEVELS: Whether you are a pro or just starting to play Sudoku puzzles, you will find an appropriate challenge level in this book. Each of the 4 levels, from EASY to EXTREMELY HARD has 1,000 puzzles.PRINTED ON HIGH-QUALITY PAPER: Puzzles are printed on high quality white paper, so you can use pencils or pens without worry of bleed-through.KEEPS YOUR MIND HEALTHY: Sudoku puzzles are a proven method for keeping the mind healthy and combating Alzheimer's and Dementia.A GIFT LIKE NO OTHER: If someone in your life loves Sudoku puzzles, you won't find a more unique and substantial gift than this book.
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