# Mirror, Mirror Puzzle - Solution

### 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?

### Our Solution:

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.

(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.

Puzzle Author: Stephen Froggatt

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