Mensa: Mighty Mindbenders in Bloomington, MN

No special skills are needed to tackle these fiendish puzzles beyond common sense, logic, and a tenacious will to not give up.
The timed tests are fun and challenging, and will give you an idea of your possible IQ, while the mazes cater to every level of ability. So, roll up your sleeves, get your thinking cap on, and give your brain a serious workout.