You win The Keyhole through patience, spatial reasoning, and a little bit of quiet time. This clever metal puzzle is rated by Mensa and designed to be frustratingly difficult, sitting at a specific challenge level within a graded system. We like it because it's tactile, well-built—like all University Games puzzles—and gives you a genuine sense of satisfaction when you finally hear that "clink" of the solution. It's the perfect thing to keep on your desk or pack for a long flight for some focused, screen-free entertainment.
Features
Mensa-rated brainteaser for a verified level of mental stimulation and challenge
Tiered difficulty system from level 1 to 6 so you can collect and progress through increasingly complex puzzles
Premium quality metal construction to ensure durability and a substantial, weighty feel in the hand
Compact and lightweight at just over 3 ounces, making it highly portable
Suitable for ages 12 and up for an engaging challenge that works for teenagers and adults alike
Fit and sizing
Measures 4.75 x 3 x 0.1 inches, perfectly sized for a pocket or desktop display
