The object of this quiz is to click on the circle containing the largest population within Europe. When you begin you'll be shown 2 circles with radii between 50 and 250 km on the map which do not intersect. Click on the one with the larger Europe population within it (based Europe population density info) then 'Submit' - if you are correct you'll move on. One incorrect round and the quiz is over. Every 5 rounds the number of circles on the map will increase by 1. Try to build the longest streak of correct circles. Circles displayed will always be non-intersecting.
PLEASE NOTE: ALL of Turkey is included in counting population (not just European portion), and the portion of Russia west of 61.5 degrees E (just east of Chelyabinsk). Nothing outside Europe (such as Africa or middle east other than Turkey) is included toward the population count within a circle.
Quiz Takers 
How come you have L’Hospitalet (de Llobregat) on here, but you didn’t have Newcastle (upon Tyne) on the 9-letter quiz? Also what about Novopolotsk and Sankt Gallen
removing L’Hospitalet – Novopolotsk had an alt spelling, adding this one, adding Sankt Gallen (mistakingly under St Gallen).
L’Hospitalet is still there
gone now.