There are lots of kinds of hard riddles—silly ones, weird ones, ones that make you groan when you hear the answer. But they all flex our brains and challenge us to think in a new way. But the very ...

If there's one thing we can all agree on, it's that riddles are undeniably fun! (Just ask the Ancient Greeks). There's nothing like the triumphant feeling one gets after solving an "unanswerable" ...