- Famous Frog Sudoku 600 Puzzles, 300 Medium and 300 Hard: A Sharper Pencil Series Book
- Famous Frog Holiday Sudoku 400 Giant Size Medium Puzzles, The Biggest 9 X 9 One Per Page Puzzles Ever!: Don't Be Bored Over The Holidays, Do Sudoku! Makes A Great Gift Too.
- Famous Frog Holiday Sudoku 400 Giant Size Very Hard Puzzles, the Biggest 9 X 9 One Per Page Puzzles Ever!: Don't Be Bored Over the Holidays, Do Sudoku! Makes a Great Gift Too.
- Famous Frog Holiday Sudoku 400 Giant Size Hard Puzzles, the Biggest 9 X 9 One Per Page Puzzles Ever!: Don't Be Bored Over the Holidays, Do Sudoku! Makes a Great Gift Too.
- Famous Frog Holiday Sudoku 400 Giant Size Easy Puzzles, the Biggest 9 X 9 One Per Page Puzzles Ever!: Don't Be Bored Over the Holidays, Do Sudoku! Makes a Great Gift Too.