Can you guess the Mystery Capital City ? To make a letter appear in the "Mystery Capital" section, you need to type a (national) capital city that contains the same letter in the same place. Good luck !
You can type in any national capital city, even if it doesn't have the same number of letters as the one to find.
When typing a capital, its letters will appear in the "Found Letters" section. If a letter stays grey after typing a capital with that letter in it, that means that it's not in the Mystery Capital. If it goes white however, it is. You'll then have to find where exactly !
Diacritics are not taken into account, so letters with them are considered the same as letters without.
Start by naming any country that France borders. Then name any country that borders any of those countries. Then keep going until there are no more countries left to name.