Minesweeper cheat

You can configure Minesweeper to display either a white or black pixel on screen, depending on if the cursor is over a mine (black) or not (white) by following these steps:
1. Start Minesweeper.
2. Type "xyzzy" without quote then press Shift+Enter.
3. Minimize all windows and begin play.

The pixel in the top left-hand corner of the desktop will be black if the cursor is over a mine square or white if the cursor is over a safe square.