- Sudoku Easy as ABC - 200 Hard to Master Puzzles 9x9
- Sudoku Suguru - 200 Hard to Master Puzzles 8x8 (Volume 8)
- Numbricks Puzzle Books - 400 Easy to Master Puzzles 13x13 (Volume 5)
- Sudoku Skyscrapers - 200 Master Puzzles 8x8
- Variety Puzzle Books for Adults - 400 Easy to Normal Puzzles 9x9: Straights, Numbricks, Suguru, Calcudoku (Volume 5)






























