Sorted it. When you load minesweeper the normal way, a 'minesweeper' bar appears at the bottom of the page. Right click the mouse to bring up a menu. Choose move, and without moving the mouse-pointer icon (probably off screen) hold left button down continously and drag south until - hey presto (I hope). Otherwise in the bottom menu choose minimise, or even double click left on the task bar, watch minesweeper disappear, and the click left again and say hello!?!