Is there a puzzle clue giving you extra trouble? Does it have a question mark at the end? In the world of crosswords, a clue with a question mark means that particular clue demands a second look. Usually, that bit of punctuation is an indication that the clue itself is a play on words, as opposed to a straightforward question demanding an answer or a fill-in-the-blank [source: Sayles]. So, the most obvious answer probably isn't the correct one. Think about all possible meanings of the clue; you can always ruminate on it while you go on to other parts of the puzzle.