Publisher's Synopsis
★ 492 Hard Sudoku Puzzles for Advanced ★
- 6 Unique Sudoku Puzzles per Page.
- Big Sudoku Puzzle, Clearly Visible.
- Demanding level of Sudoku Puzzles.
- Great for Kids.
- Great for Adults.
- Great for Seniors.
- Great for Brain Training.
- Enough for a lot of Fun.
Did you know that sudoku trains the brain?
Did you know sudoku is great option in free time?
Did you know sudoku is relaxing?