It automatically advances when you get the answer right. If it's not advancing, you're probably entering the wrong language (even if you think you're right; the

It automatically advances when you get the answer right. If it's not advancing, you're probably entering the wrong language (even if you think you're right; there are a lot of similar looking, but obscure languages in there). I agree that it would be nicer if the author made it more obvious as to how it worked though.