They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

One night, a woman receives a call from the police. They tell her that her husband was murdered and that she should come to the crime scene as soon as possible. The woman drops the phone, shocked, and drives 20 minutes to the crime scene. As soon as she reaches the crime scene, the police arrest her and she is convicted of murder. How do the police know she committed the crime?

What goes up but never comes down?

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

I can be cracked, made, told, and played. What am I?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?