I just got two out of 18 that I was familiar with, but I'm not sure whether I was supposed to spend time thinking about it. Sometimes I was sure that I recognised the face, but couldn't place it, and said that I didn't know without really trying.

There were a few that I got wrong after thinking I knew it, and one that I got wrong after rejecting the correct answer as a hypothesis.

V gubhtug Ovyy Pyvagba jnf Fgrira Frntny; Wvz Pneerl jnf gur thl sebz Gur Fuvavat; Tnauqv jnf Rvafgrva; naq V qrpvqrq Znetrerg Gungpure jnf cebonoyl abg Znetrerg Gungpure. Ohg V tbg Xrnah Errirf naq Trbetr Ohfu.