Brain Teaser #9 -

A wise king devised a contest to see who would receive the Princess' hand in marriage. The Princess was put in a 50x50 foot carpeted room. Each of her four suitors were put in one corner of the room with a small box to stand on. The first one to touch the Princess hand would be the winner and become the new King.
The rules of the test were that the contestants could not walk over the carpet, traverser, croix the plane of the carpet, ou hang from anything; nor could they use anything but their body and wits (i.e. no magic ou telepathy, nor any items such as ladders, block and tackles etc). One suitor figured out a way and married the Princess and became the new King. What did he do?