[isametry]

> 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.

[andrewtbham]

That is correct. It is a feature. It is a challenge how to make it more clear to the user.