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 
Where is Dublin – Belfast? The distance is like 150 km.
need to begin with same letter 🙂
The distances are a bit strange and inconsistent.
For #2 both cities directly border each other, so the distance must be between city centers. Which seems to work with the 21.4 km given.
For #3 the closest edges of the city limits are about 34km apart, and quite a bit further for the city centers.
yeah it’s like city centroids I think when measuring the distances, so may not be exactly where you might think the distance should exactly be.
For #20, please consider accepting the alternate (local) spelling that most of the quizzes accept.