AT THE CORNER OF THE FLOOR .
There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it. If you are not allowed to move in any way (other than your eyes).
Where can you place an apple so that all but one person can see it?
The horse jumps over the king, strangely there is absolutely no scratch on him.
Can anyone explain, how is this possible ?