'the big book of sudoku puzzle easy & medium & hard: large print soduku books for adults and seniors, soduko for adults 4 puzzls per page, easy-medium-'
Enormous Sudoku Puzzle Book - 300 Puzzles - Easy, Medium, Hard. With Solutions, Ultimate Sudoku Book for Adults Easy to Hard This Big Sudoku Puzzle Book highlights 300 riddles 100 simple, 100 medium, 100 hard Light and compact 8.5"x 11"