Puzzle-solving is at the heart of every innovation. Faced with a challenge, great thinkers for centuries employed logic, ingenuity, and creative thinking to solve the toughest problems. What resulted were brilliant inventions that changed the world. We’ve honored the original thought-leaders from ancient cultures by connecting their inventions to our brainteasers to create a challenging line of puzzles worthy of the title, True Genius. Goal: Disassemble the puzzle and put it back together.Using their vast knowledge of the celestial sphere, the Aztecs created a stone calendar so precise in its astronomical calculations that it correctly predicts solar eclipses to this day. Our spherical Sun Stone puzzle offers this same exacting precision, creating a challenge inspired by the Aztecs’ works of true genius.For Ages: 14+WARNING! Choking hazard. May contain small parts. Not for children under 3 years. May contain splinters