Type 'easy' or 'hard' to begin the quiz. Easy is a 2-degree grid, hard is a 1-degree grid. A grid will be placed randomly on the map. Then, try to name the 1st-5th largest city in each square, depending on what the square label displays (so if the label says '3rd Largest' you are trying to name the 3rd largest city in that square). To name a city, you must first click on the grid square to make it have a GREEN border. Then, type in the city answer for that square followed by a '.' (a period). You are given a score from 0 to 100 based on your answer's population compared to the target city accepted in that square (100 being you named the correct city).
At the end of the quiz the target city will show in each unanswered square.
Quiz Takers 
i changed this to remove Frankfurt – it will be under its full name in a quiz for 15 letters.
Newcastle? also please accept Genichesk
This series of quizzes uses the full official name for cities, so it’s Newcastle upon Tyne. Same for Stoke and Hull for instance.
yeah i tend to use full city names for counting letters…will add that alternative.
then why do you use Frankfurt and not Frankfurt am Main
If you have Newcastle as an alternative won’t the city appear in two quizzes, this one and the one with more letters? I’ve seen quizzes with Frankfurt and Frankfurt am Main but with such an amount of quizzes one can excuse a bit of inconsistency here and there.