Teams of up to six people drive around the city for five hours trying to find the answers to sixty clues. A point is scored for each clue answer correctly recorded, and a point is lost for every minute the team is late at the end of the five hours. A reduced scale map based on the 1:10 000 scale Ordnance Survey Landplan map of the City is provided, along with a sheet of the sixty clues. Each clue is an eight digit Ordnance Survey grid reference (which defines a 10 m by 10 m area to search) and a quotation of some text or number that can be found at the location, with some parts missing, which need to be found and written down as the answer.