This Sudoku number game is classical mathematical game, which is beneficial to the development of intelligence and exercise your logical thinking ability. Suitable for both kids and adult to play. Features: The table game toy adopts safe material, eco-friendly and non-toxic. Suitable for all people above 2 years old from children, adult to the elderly. Train your logical thinking ability and promote the intelligence development of children. Use it to learn numbers, arithmetic, geometric pattern for little kids. There are multiple game rules, and you can choose the appropriate game level to play. Specification: Condition: 100% Brand New Material: ABS Board Color: Blue Suitable Age: 2 years above Size: approx. 25.2*24*1.8cm/9.92*9.45*0.71in Weight: approx. 366g / 12.9oz Package List: 1 * Blue Box 81 * Number Cubes 1 * Manual Note: 1. Please allow 0-2cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.