Feature:1. Beech wood is dense, with fine and straight wood grain, ecofriendly waterbased paint.2. Enhance children's logical thinking ability in the process of reasoning and thinking, and enjoy the sense of accomplishment after solving problems.3. It is made of highquality beech wood material, nontoxic, safe and durable, suitable for children to play.4. Interesting early education toys help develop children's logical thinking and attention.5. Perform arithmetic operations with children to enhance parentchild interaction and communication, and improve children's intellectual development.6. Lightweight and portable, easy to carry and store, it is a great gift for children.Specification:Condition: 100% Brand NewItem Type: Chess GameMaterial: BeechFunction: Interesting early educational chess toys, help to cultivate children's logical thinking and attention.Size: Approx. 22.3 x 22.3 x 3.2cm / 8.8 x 8.8 x 1.3in (manual measurement, for reference only)Steps for Usage:1. Set up questions: Use the black side of the chess to set up questions, and beginners can follow the instructions.2. Rule: According to the known numbers on the 99 disk, all the numbers in the remaining spaces are inferred, and the numbers in each row, column, and each bold line must contain 1-9, without repetition. Every qualified question has and has an answer.3. Completion: Look at the instructions to check whether the answer is correct..Package List:1 x Chess Box with Drawer (Can be divided into two halves)81 x Digital Wooden Block1 x Manual1 x White sticker Can be PastedNote:1. Please allow slight 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.