Type 'easy' or 'hard' to begin the quiz. Easy is a 2-degree grid, hard is a 1-degree grid. Then, try to name the largest UK 1K+ cities in each square IN ORDER. 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).
The squares will start with '0/5' (or maybe fewer cities if less exist in that square). Click on a square and enter the largest city in that square not yet answered (so, the largest city if you have yet to answer a city in that square). You will then have '1/5' and need to click on that square to name the 2nd largest city, and so on until you complete all the cities up to 5 (or less if less exist). If you name an incorrect city in a square it becomes 'locked' and turns red and you can no longer accumulate cities in that square.
You receive 1 point for the largest city in a square, 2 for the 2nd largest, and so on.
At the end of the quiz the largest remaining city you haven't named will be shown in each square.
Quiz Takers 
Awesome quiz! There are far too many small villages, most of them with strange names, in my country of birth.
Are you truly Czech, or Czechloslovakian?
I was born in Czechoslovakia and I am Czech. But I think that I have already reached my limit on this quiz. By 75% you are left with tiny villages you need to know tons of to make any further progress. 80% is almost impossible unless you start typing in names from a list.
I lived there for 3 years and 44.47% is as far as I got..
Yep, you can basically just start typing random Czech words and you’re bound to find a village with that name.
Very true. You cannot, however, get 100% in this way like cheater Servaes did. I hope he’s a robot, because copying 6000+ names from a list doesn’t sounds like a lot of fun for a human being.