A famous puzzlemeister presents 103 perplexing brainteasers, anagrams, and rebus and logic puzzles. There are clues — and humor — in the 69 whimsical illust

Forty mazes with geometric trickery.

FLEX YOUR brain power like never before! From acclaimed author Dr. Gary Gruber, whose proven critical-thinking methods have sold more than seven million books,

What a bargain! At more than 700 puzzle-packed pages, this huge, value-priced collection should keep any solver happy...and busy for a very long time. It contai

Fair, witty appraisal of cranks, quacks, and quackeries of science and pseudoscience: hollow earth, Velikovsky, orgone energy, Dianetics, flying saucers, Bridey