Description: Try the Grecian Computer Brainteaser Puzzle Test your true genius skills with the Grecian Computer – a wooden brainteaser puzzle based on ancient artifacts. Perfect for advanced puzzlers and anyone who is up for a challenge! Try to turn the dials until all 12 columns add up to 42 Difficulty rating of 5/5 stars For 1 player Recommended for ages 14 and up Wipe clean with dry or damp cloth Assembled Dimensions: 7″L x 6.5″W x 2.5″H Origin: China Warning: Choking Hazard – This toy contains small parts NOT for children under 3 years.