- Sudoku for kids to improve logical thinking. Volume 8: 100 Sudoku puzzles for clever kids, Easy sudoku puzzle books for kids 8-12 - large print - with solution.
- Sudoku for kids to improve logical thinking. Volume 4: 100 Sudoku puzzles for clever kids, Easy sudoku puzzle books for kids 8-12 - large print - with solution.
- sudoku for kids to improve logical thinking Volume 1: 100 easy puzzles, sudoku for kids 8-12, with answers.
- Sudoku for kids to improve logical thinking. Volume 10: 100 Sudoku puzzles for clever kids, Easy sudoku puzzle books for kids 8-12 - large print - with solution.
- Sudoku for kids to improve logical thinking. Volume 7: 100 Sudoku puzzles for clever kids, Easy sudoku puzzle books for kids 8-12 - large print - with solution.