- Samurai Sudoku: 1000 Puzzle Book, Overlapping into 200 Samurai Style Puzzles, Travel Game, Lever Easy Sudoku, Volume 14
- Samurai Sudoku: 1000 Puzzle Book, Overlapping Into 200 Samurai Style Puzzles, Travel Game, Lever Standard Sudoku, Volume 15
- Samurai Sudoku: 1000 Puzzle Book, Overlapping into 200 Samurai Style Puzzles, Travel Game, Lever Very Easy Sudoku, Volume 13
- Samurai Sudoku Puzzle Book: 250 Samurai Sudoku Puzzles / Overlapping Into 50 Samurai Style / Very Easy Sudoku Volume 2
- Mazes Kruskal Puzzles: Brain Challenging Maze Game Book, Selection of Algorithm and Complexity, Workbook Volume 2