I had the same problem and was really scratching my head, assuming there was a glitch in the quiz. I think it would be helpful to say at the top something like 'You only need to write in the surname and it will be accepted'. Otherwise it was a fun, albeit very challenging quiz (that is the second time in a JetPunk quiz I have been caught out by a question because I didn't note the difference between 'Invisible Man' and 'The Invisible Man')
I think you should accept the spelling of 'Dostoevsky' ; that's the way it reads on the spine of my book "The Brothers Karamazov"! I also think Albert Camus should be accepted for "The Stranger", see other comments herein regarding that one.
Fun quiz, but definitely should show full names as the answers (and accept either full names or last names only). Also Beowulf should be filled in from the start or just left off of the quiz entirely. I saw it and thought, "I didn't think it had a known author," but assumed it must if it was in this quiz, so I didn't even make a guess.
I kept putting Wells for Invisible Man as that is more widely known as "literature." While I am sure that the Ellison novel is a great piece of literature, as well, I was never assigned the novel as an English Lit major.