Mahjongg Solitaire

Beijing mahjongg solitaire is a fun timed game. You get 7 minutes, and can shuffle the tiles as often as you like.

Rules:

Clear away all the tiles in the formation by finding matching pairs.
Tiles cannot be covered and have to be free on one side to be removable.
If you can not find ant pairs, you may shuffle the tiles any time.
Clear all tiles in 7 minutes.