- Samurai Sudoku: 500 Medium Sudoku Puzzles Overlapping into 100 Samurai Style (Logic Puzzles Series)
- Jigsaw Sudoku: 500 Medium to Very Hard
- Variety Sudoku Puzzle: 400 Easy to Hard Puzzles
- The Giant Book of Numbrix: 1000 Medium to Very Hard : (10x10) Puzzles (Adult Activity Books Series)
- The Giant Book of Numbrix: 1000 Medium (10x10) Puzzles





























