By the co-author of the bestselling Mensa Genius Quizbook series, this collection of 175 challenging--but not impossible--verbal and mathematical puzzles is des

This all-new volume of mind-bending verbal and mathematical puzzles is a joyful challenge of intelligence and wit. Dr. Salny challenges readers with puzzles tha

A collection of over 150 picture puzzles, ranging from easy to difficult, involving logical thinking and spatial perception, with a choice of answers for the so

"Are you ready to... * Crack the crafty logic problems? * Solve some sneaky sudokus? * Put your searching skills to the test? Packed with tons of terrific brain