First choose a difficulty by typing ‘beg’, ‘int’, ‘adv, or ‘exp’ – Beginner is 200km radius, Intermediate 100km, Advanced 50km, and Expert 25km. Then, enter 1K+ population cities and all 1K+ population cities within that radius will automatically fill in.
hugequiz Premium members will see the 50 largest missed cities at the end of the quiz as large, purple markers.
NEW: Premium members can now also play a 3-hour time limit 'custom' coverage quiz of any distance from 5km to 500km, simply enter the distance followed by a '.' instead of choosing from one of the four levels, i.e. '350.' Quiz score is not recorded for the custom coverage option.
NOTE: the source citypopulation.de does not have a some Belarus/Russia/Ukraine smaller places such as villages so that data isn't available.
Quiz Takers 
btw why is Figueira da Foz not an answer on the F quiz? it seems to be bigger than the answer currently listed
http://citypopulation.de/en/portugal/coimbra/figueira_da_foz/015764__figueira_da_foz/
Portugal I use localities – other figures are using larger areas than just the city proper.
Damn, this is so hard lol
It would be nice to have a little bit more time for this, 10 minutes is challenging… Other than that – I really love this quiz!
ill bump it to 15
still not enough though… it’s less than 10 s per square :/
yes but there’s a bonus for completing a square.
there were no bonuses for me tho
oh you’re right not on this one – i’ll up starting time.