> If I click "Check" without typing anything and then click "Correct" my score goes up.
I believe that’s a feature. If you can’t find the actual answer (or don’t want to) you can just say or think the answer for yourself, then check and honestly choose if you got it right. That way you still get to keep track of your score, without having to input the name every time.
The hard ones for me were countries in mainland Africa, island nations in the Atlantic and the Pacific, and small adjacent countries that you associate in a group – say Lithuania, Latvia and Estonia, or Uzbekistan, Turkmenistan, Tajikistan, Kyrgyzstan.
I believe that’s a feature. If you can’t find the actual answer (or don’t want to) you can just say or think the answer for yourself, then check and honestly choose if you got it right. That way you still get to keep track of your score, without having to input the name every time.