9 x 9 Intelligence Toy Sudoku, 9 x 9 Sudoku

1. Brand new and high quality.
2. 9 PCS number 1-9 pieces and one question.
3. Stimulates childrens cognition on logic and number.
4. A nice way to enhance kids hand-eye coordination.
5. A nice gift to your friends and families.
6. Not suitable for kids under 3-year-old.