Mensa's Most Difficult Pattern Puzzles - Tim Dedopulos, Mensa Ltd

Mensa's Most Difficult Pattern Puzzles provides an exceptional challenge for even the most adept of puzzlers. Your mind will need to be at its most nimble to spot the patterns and crack the colourful codes hidden within these conundrums. With puzzles ranging from spatial awareness challenges to colour hue conundrums, this vibrantly fiendish puzzle book will keep you entertained for hours.