- Sudoku 200 Hard Puzzles Giant Sized. One Gigantic 8 Square Puzzle Per Page. Solutions Included: A Break Time Series Book
- Sudoku 800 Extra Hard Puzzles. Solutions Included: A Break Time Series Book
- Sudoku 1,200 Extra Hard Puzzles. Solutions Included: A Break Time Series Book
- Sudoku 600 Puzzles, 300 Hard and 300 Extra Hard. Solutions Included: A Break Time Series Book
- Sudoku 500 Medium Puzzles. Solutions Included: A Break Time Series Book






























