A few years ago there appeared a Listener crossword puzzle that required a knowledge of the opening lines as its last step. The crossword fraternity was sharply divided into those who appreciated it and those who believed that requiring a knowledge of Latin was unfair.
It’s sad, really. Classics is associated in the popular mind with crossword puzzles, as when the uncircumcised philistines mock the study of it as being only useful for solving the Times crossword (it’s always the Times, for some reason). And many of the earlier setters, and undoubtedly the solvers, had classical backgrounds. But nowadays, at least as far as cryptic puzzles go, you’d probably find more maths and computer types, and a standard cryptic clue is more likely to be an equation of the type A +/- B = C than to require knowledge of either classical languages or history.