Solving hard riddles is good for you! And if you were searching for a thorough selection of hardest riddles, look no further ...

1. I speak without a mouth and hear without ears. I have no body, but I come alive with wind. What am I? This hard riddle ...

From tricky brain teasers to classic word games, many of us love a good challenge. So, it's no surprise that a viral riddle—known as the "30 Cows and 28 Chickens" riddle—is going around right now.