Mensa Challenge Your IQ Pack Robert Allen
An interactive pack to challenge your intelligence, ingenuity and perseverance while giving many hours of fun. Sharpen your wits and test your ingenuity with this superb collection of taxing games and puzzles. The pack contains a book of challenging puzzles that are done against the clock. The pack also contains a variety of games calling for a mixture of strategic thinking, logical deduction, and the sheer unflinching will to win.