Mensa - Test Your Mind: Twenty IQ Tests From The Masters of Intelligence

The book contains a series of workouts specifically designed by Mensa's finest puzzle setters to stretch and mould your mind muscle. There are 20 tests consisting of 40 puzzles each, focussing mainly on logic puzzles both traditional and non-traditional, from Skyscrapers and Number Pyramids to more exotic puzzles like Kropki and Hashi.