This book contains 500 tough to toughest sudoku for boost your brain power.
If you are tired by solving the easy, medium and hard sudoku then you must try to solve this sudoku book.
Book Features:
Not for beginners500 engaging puzzle250 tough + 250 toughest sudokusBook size 8.5" x 11"Glossy finish coverSo buy this sudoku book now and improve your brain skill.
Related Subjects
Games