Description: The Sudoku chess board with drawer features 81 pieces digital blocks with the number of 1 to 9 Sudoku board is divided into 81 square and sub-divided into 9 grids each containing 9 square kids children educational board game toy for number?mathand mathematical puzzles and intelligent training taching aids Come with english instruction book containing 60 puzzles of all levels of difficulty - so there is something for everyone. Intelligence Toy to exercise kids brain?the use of logic and reasoning?sample logic and ever-changing digital arrangement Material: Plastic Note?Small Part?Choking Hazard, Please be use under adult guardianship directly Specification: Chess Board?L/W/H?Approx. 25.5 x 24 x 1.5cm/ 10.03 x 9.44 x 0.59 inch Digital Blocks?L/W/H?Approx. 1.6 x 1.6cm/ 0.62 x 0.62 inch What you need to do is fill the empty square with the numbered blocks and to make sure that each row?each column and each 3X3 grid contains the numbers 1 to 9 and every number do not repeat in each each row?each column and each 3X3 grid. Package Includes: 1 Set SUDOKU Puzzle Toy Note: This product must be use under adult guardianship directly. This product contains small parts?do not eat in order to avoid danger suffocation?not suitable for children under the age of 3