It didn't last long: a couple of people (Khadaji first, then cffndncr) spotted that yesterday's torch was from Prince of Persia. The original Prince of Persia mind you, not the 3D remake in the early 2000's or the Ubisoft reboot thereafter.
Well done, you two. But now it's time for something a bit harder.
Good luck everyone! And don't forget, you can always draw something and email it in.