A fantastically tricky puzzle for those who like to test their skill and dexterity in the most tantalising of ways this constantin double trouble puzzle is designed with two mazes and two balls, which need to be maneuvered simultaneously, in order for it to be completed sure to test even the most patient of safe crackers and lock hackers keep a cool head and go with the flow, the puzzle can be solved with skill, experience and a subtle hand...a perfect gift for the skillful puzzler in your life.