- The Sudoku Sampler: 1000 Easy Puzzles in 10 Variations
- Sudoku Puzzles: 420 Sudoku Puzzles 9x9 (Medium & Hard), Volume 3
- Sudoku Puzzles: 420 Sudoku Puzzles 9x9 (Hard & Super Hard), Volume 4
- Sudoku Puzzles: 420 Sudoku Puzzles 9x9 (Easy, Medium, Hard, Super Hard), Volume 1
- Sudoku Puzzles: 222 Sudoku Puzzles 9x9 (Medium), Volume 1, Compact Size