The purpose of the game is to open all the cells of the board which do not contain a bomb. You lose if you set off a bomb cell. Every non-bomb cell you open will tell you the total number of bombs in the eight neighboring cells. Once you are sure that a cell contains a bomb, you can click with the mouse holding the left control key down to put a flag on it as a reminder. Download the code here.

See Telerik Silverlight controls here.