Title: The Puzzler: One Man's Quest to Solve the Most Baffling Puzzles Ever, from Crosswords to Jigsaws to the Meaning of Life, Author: A.J. Jacobs
Title: Numbers Game, Author: Graham Perry
Title: The Canterbury Puzzles, Author: Henry Dudeney
Title: Psy-Q: Test Yourself with More Than 80 Quizzes, Puzzles and Experiments for Everyday Life, Author: Ben Ambridge
Title: Protein Shakes for the Brain: 90 Games and Exercises to Work Your Mind's Muscle to the Max, Author: Michel Noir
Title: The Scotland Yard Puzzle Book: Test Your Inner Detective by Solving Some of the World's Most Difficult Cases, Author: Sinclair McKay
Title: The Total Brain Workout: 450 Puzzles to Sharpen Your Mind, Improve Your Memory & Keep Your Brain Fit, Author: Marcel Danesi