Boost your brainpower with this collection of Mensa memory, mind, observation and intelligence puzzles. Have you got what it takes to join the high IQ society? Grab a pencil and paper, pick a puzzle and let's find out! With 50 double-sided puzzle cards, now is the time to challenge yourself, unlock new levels of intellectual skill, and revel in the satisfaction of conquering puzzles designed to really test your brainpower. Contents: 50 cards. Age: 14 No. of players: 1 Box dimensions: 15.7 x 10.8 x 2.5cm