1IntroductionHuman beings have always been fascinated with puzzles and brain teasers. Archimedes was probably the first person in history to build a puzzle. It was known as the Loculus Archimedis, or Archemedes' Box, and was a cross between a jigsaw puzzle and a tangram. Historical records reveal that he enjoyed coming up with challenging problems for his peers to solve. Biblical kings such as Solomon and Hiram used to have riddle contests. More recently, famous writers such as Edgar Allan Poe, Lewis Carroll and J.R.R. Tolkien, entrepreneurs such as Leonardo da Vinci and Benjamin Franklin and architects such as Ernő Rubik have all been fascinated with developing and solving puzzles. This fascination continues today in the form of brain teasers in daily newspapers, quiz shows on television, game tournaments and of course, puzzle books.
Dr. Shireen Stephen holds a Ph.D. in Health Psychology and an M.Phil. and M.Sc. in Applied Psychology. She is a counselling psychologist, researcher, writer and editor. She is well known for her episodic memory of remembering dates and connected events. She is also renowned for her auditory memory of remembering clients and their counselling sessions – even years later – without taking down any notes!