Progressive Sudoku Challenge: 400 Large Print Puzzles from Very Easy to Hard 4 Difficulty Levels Solutions Included

200 Sudoku 6x6 Puzzles: 4 Levels of Difficulty From Very Easy to Hard

200 sudoku puzzles Multiple levels of difficulty Easy to Very Hard.: Including solutions

SUDOKU 4 Difficulty Levels: 100 Puzzles Easy, Medium, Hard, and Very Hard...

Sudoku for Adults and Seniors: 240 Large Print Puzzles from Very Easy...