- Samurai Sudoku: 500 Medium Sudoku Puzzles Overlapping into 100 Samurai Style (Logic Puzzles Series)
- The Giant Book of Numbrix: 1000 Medium to Very Hard : (10x10) Puzzles (Adult Activity Books Series)
- Jigsaw Samurai Sudoku: 500 Medium Jigsaw Sudoku Puzzles Overlapping into 100 Samurai Style (Samurai Sudoku Puzzle Books Series)
- Numbrix Adult Puzzle Book: 200 Medium (10x10) Puzzles
- Tons of Binary Puzzle for Adults & Seniors: 1000 Easy to Hard (10x10) (Logic & Brain Teasers Series)