Knots and Numbers - 50 Brain Teazers
By Roy Whitlow
Published: July 24, 2013.
Puzzles, quizzes, mind games, brain benders, teasers, riddles and the like have been around for thousands of years. Fascinating examples of mind benders can be found in Chinese, Greek, Roman and other histories, many that still test our skills today. The puzzles here I have collected over the past 40 years, some of which I have contributed to a few magazines. They are meant to be entertaining.