Above, an order 16 square, or checkboard, is being tiled using the Propp-Wilson Algorithm. Due do the relaxed boundary conditions, the entire square is random. In the later cases, "arctic regions" will generally form in the corners, while only the center seems to be random.

If you want to look at a larger square, click here.

Note: by clicking the applet and scrolling the wheel on your mouse you can adjust the pace of randomization.