Use your mouse to move the jigsaw pieces into position and complete the picture.
The Picture button displays/hides a full sized hint picture underneath the puzzle.
The Edge Pieces button displays/hides the center pieces to make it easier to work on the edge.
The Turn Over button activates/deactivates the turnover feature. When on, clicking on a piece or a completed portion of the puzzle will turn it over. You can also turn over a piece by pressing and holding the "T" key while clicking the mouse on it.