OMG, now I understand. Thank you so much man.

Yeah, the explanation is pretty much what you said.

I think @ivan_popov means that he has solved and/or unlocked solutions for kata; then he has looked at the top voted solution and attempted to solve kata with it, but finds that there is an error (due to code length).

@ivan_popov: The reason is - (Yushi.py: if you press View Solution you can see his solution) - probably that you have 3 extra "empty" lines in your current solution; try deleting those extra lines and try again submitting: those lines are counting towards the character limit.

I'm sorry, but, what?