Mirror, Mirror Puzzle
The Puzzle:
 | If you continue shading the squares so that the two dotted lines become lines of symmetry (mirror lines) of the completed diagram, how many squares will be left unshaded? |
If you continue shading the squares so that the two lines become mirror lines, we get this:
(Note: I have shaded the new squares differently just so that you can see where they go.)
The number of squares left is then 9.
