A fun collection of math brain puzzles, including 3D mazes. - Title: Manga de Wakaru! 10-sai made ni Asonde Dekiru Sansu-nou Puzzle 250 (Learn with Manga! 250 Math Brain Puzzles You Can Play Before Age 10) - Price: 1500 yen - Contents: Includes math puzzles such as 3D mazes. - Target age: Up to 10 years old The book is about 400 pages long, but there is writing on about 125 pages. Also, a few stickers are missing. We hope that those who don't mind these issues will consider purchasing. Thank you for looking.