"There is mental entertainment, magic, math, and more in this
collection of classic tricks and problems."-Student Library
Journal. Although referring to Townsend's 'The World's Most
Challenging Puzzles,' this quote is applicable to his entire
puzzle cannon. If you enjoy pitting yourself against the most
challenging puzzles in existence and are a glutton for
punishment, then one or all of these books are for you. Take your
pick among... more...