These riddles aren’t about how smart you are. They’re about how well you notice things. Each one uses misdirection, subtle ...

When the answer isn't as straight forward as it seems. We have 10 tricky riddles to challenge you on with some more thought provoking than others. READ MORE: ...

Try your hand at these 10 riddles written by Leonardo da Vinci, or, as the Renaissance master called them, "Prophecies." "Happy will they be who lend ear to the words of the Dead," reads one.