Thanks for your comment
I hope you'll do a series of these.
Do you have a database you use for these quizzes?
I do have Excel files for country borders, country tripoints, capital cities and distances between them (I'm happy to share them in case you're interested).
For this particular quiz I went to www.daftlogic.com and typed-in one after the other the capital cities starting with A.
After that I looked at the paths that were created and noted down the names of the countries they go through.