Massive Book of Mensa® Puzzles (4 Books in 1!) - American Mensa, Fred Coughlin
4 Books-In-1! The biggest book of puzzles ever released by Mensa®—the smartest brand in the world! 400 brain-teasers and logic games to keep your mind sharp!Esteemed puzzle master David Millar and American Mensa® have compiled hundreds of logic and problem-solving puzzles in the form of both word…