Type 'easy' or 'hard' to begin the quiz. Easy is a 1-degree range, hard is a 0.5-degree range. Then, name any 10K+ Europe city in each longitude range which fits the category label for each square.
LETTER: means the city starts with that letter.
NUMBER RANGE: (such as 2-5, 10+) means the city contains that many letters (excluding spaces and special characters).
POPULATION RANGE: (such as 250-500K) means the city has that range for its population.
2+ WORDS means the city name has 2 or more words (words denoted by a space or hyphen).
At the end of the quiz the largest population missed answer will show in each range.
Quiz Takers 
doesn’t make sense that some multi word cities are included if the first part is 5 letters and some aren’t
for example Torre del Greco included but Torre Annunziata isn’t
Gioia del Colle is included but Gioia Tauro isn’tRosny-sous-Bois included but Livry-Gargan isn’t etc.
I have adjusted these – they are based on the full name and I had some computing total letters off the partial shortened name. But for some cities very often referred to using a shortened name (like Frankfurt) I go with the shortened, common name.
these were just 3 examples there are dozens of others too (like in France every city that’s “sur” or “en” something)
it’s a good thing that we don’t have to type full names in general but they shouldn’t appear on quizzes like these which ask for an exact amount of letters
for some reason the markers for Halle, Essen, and Lille aren’t disappearing (even tho they’re counted into the stats)
fixing this now – thanks.