There are three 'rooms' to be solved with multiple challenges that need to be overcome to provide a means of escape, all based on the popular Unlock! card game. More than 150 artworks are included to provide the reader with all of the information they need to solve the puzzles.
Based on the world-famous test undertaken by London's black cab drivers, The Knowledge Quiz Book offers up a selection of fiendishly difficult questions and routes straight from the streets of London.
