When a square is flipped, it gets an <span style="color: #ba0000">'''X'''</span> if it was empty, and clears out the <span style="color: #ba0000">'''X'''</span> if there was already one there. | When a square is flipped, it gets an <span style="color: #ba0000">'''X'''</span> if it was empty, and clears out the <span style="color: #ba0000">'''X'''</span> if there was already one there. |