Specifications: Toy guide children to learn independently, improve children's number perception and logical reasoning ability. Sudoku game improve children's concentration and observation, and make children interested in mathematics by playing games. Drawer design is easy storage and carrying. How to play: 1: Multiple-choice question card Insert the transparent gasket into the card slot and prepare to answer the question. 2: The number in the number placement area represents looking from the direction of the number indicated; you can see the number of chess pieces, the taller ones will cover the shorter ones, the occlusion relationship needs to be considered. 3: It is necessary to fill the entire question board with animal chess pieces in accordance with the requirements of all number placement areas, and each row and column cannot repeat numbers. Item Name: Sudoku Game Material: Wood, Paper, Plastic Features: Gift, for Preschool Toddlers, Durable Size: 20cm x 22.5cm x 4.8cm/7.87" x 8.86" x 1.89" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Wooden Card Slot 50 x Question Card 1 x Spacer 16 x Animal Chess Piece