I purchased this for kindergarten and elementary school entrance exams, but I never used it. I opened the package, but it's clean because I haven't used it even once. I would appreciate it if someone would use it. How about it as a toy? For exam preparation? Or to pass the time while waiting at a restaurant!? ~Regarding purchase~ Please read my self-introduction for basic information. It was stored at home, so I would appreciate your understanding. There are people who, even though it's written, later demand complaints, returns, and refunds. Please take responsibility for your purchase. I will not respond to such requests. Type...Puzzle Popular model...Tangram Type...Jigsaw puzzle Number of pieces...Less than 50 pieces