The Mensa Shop CHRISTMAS DELIVERY: To receive your order in time for Christmas, clothing orders must be made by 2pm on Monday 11 December. All other orders must be made by Monday 18 December. Delivery is via Royal Mail. All Badges Clearance Clothing Clothing - Junior Gifts Home Test Previous Next Mensa Riddles & Conundrums £17.00 Riddles & Conundrums is an interactive pack with more 100 puzzles and activities designed to give your brain the ultimate mental workout.The pack contains a set of games, puzzles and activities to test your mental powers.Alongside a book containing a series of IQ-type puzzles, there is a double-sided game board that will provide hours of puzzle solving fun.Price includes (2nd class) postage to the UK Add to cart Back to Shop Back to Shop