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 
Can Nuremburg be accepted for Nürnberg please?
The English is ‘Nuremberg’
Quiz doesn’t accept Neukirchen (Nordfriesland)?
It might be accepting ‘Neukirch’ first, there are a few of those, then retype ‘Neukirchen’ and there are a few of those it accepts.
That’s not the issue, I’ve tried this a few times. I’m talking specifically about the commune of Neukirchen in the District of North Frysia, next to Denmark.
Ah, should be good now may need to refresh quiz and hold CTRL when refreshing or clear cache.