Welcome to the store! This brain-training toy features 81 plastic chess pieces and a 9x9 grid, making it the perfect way to sharpen your mind. No pen or paper needed! Made from high-quality ABS plastic materials, meeting all US chemical requirements for safety, harmlessness, and durability. Small and lightweight thanks to sophisticated production technology, making it easy to hold, exquisite, and beautiful. Suitable for children over 3 years old, this game cultivates digital logical thinking and makes the perfect board game toy. An ideal gift for children on various festivals such as Children's Day, birthdays, Christmas, etc. Item Type: Math Puzzle Material: ABS Plastic Board Size: Approx. 25 x 5 x 24 x 1.5cm / 9.8 x 2.0 x 9.4 x 0.6in Suitable: For ages 3+ Includes: 1 x Chessboard 1 x User Manual 81 x Chess Pieces Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!