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 
Any issues with pics/cities, let me know.
A lot of them seem really odd size, like only taking up a tiny portion of the picture box. Makes it hard to see. For instance, Vienna, Kharkiv, Rotterdam, London, Dnipro, Birmingham (almost normal width but bottom seems to be cut off).
Those cities were fine for me, but I had that cutting-off-issue with other images. Also some images were very small. It looked like an internet issue, but it’s weird that it only happens with some pictures.
It seems like you only get to see what the previous city was if you actively skip it, if the 30s timer runs out the “Last City” field is unchanged