Keyhole Brain Teaser Puzzle

**A portable puzzle that challenges you everywhere**

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.