I spent more than twenty minutes last night trying to create this throwaway account in order to publish an anonymous "Ask HN" using the TorBrowser, I even tried to "Download Audio" alternative and was completely sure that the numbers were correct but again the captcha reappeared as if the previous answer was invalid. I decided to allow JavaScript globally just in case without much luck. After some time I started to think that I was really a robot so I decided to create the account using my normal browser, very frustrating.
EDIT: https://www.youtube.com/watch?v=WqnXp6Saa8Y