500+ Sudoku Puzzle Book for Adults Easy Medium Hard: Sudoku Variation, Big Book of 9x9 Irregular Sudoku Puzzles, Challenging suduko Game Book, Tons of Paperback $6.99
500+ Sudoku Puzzle Book for Adults Easy Medium Hard: Large Print Sudoku Puzzle Book for Seniors Easy, Medium to Hard Level, Tons of Challenge and Fun Paperback $6.99
