Are you a genius? Could you qualify to join Mensa, the international society for high-IQ people? The only requirement for membership is to score in the top two per cent on a standard Mensa-supervised intelligence test. Members include persons who have never finished school and those with advanced degrees, from scientists and investors to housewives and students.

MENSA BOOK OF BRAIN TEASERS presents puzzles and brain teasers similar to those used by Mensa in its intelligence tests. The puzzles are all graded from easy to very difficult, and, despite the occasional red herring, every one presents a fair challenge. Letter sequences, anagrams, logic boxes, power problems, hidden messages, magic squares and complex crosswords, all provide a thorough intellectual workout. Answers are given at the back of the book, and where necessary, explained.

Find out if you are a Mensa genius. Attempt the puzzles in this book. Measure your score and rate your genius.