# The dotted cross

This is a very straightforward puzzle. Here are $$25$$ dots in a $$5\times 5$$ matrix. $$\begin{matrix} \cdot & \cdot & \cdot & \cdot & \cdot\\ \cdot & \cdot & \cdot & \cdot & \cdot\\ \cdot & \cdot & \cdot & \cdot & \cdot\\ \cdot & \cdot & \cdot & \cdot & \cdot\\ \cdot & \cdot & \cdot & \cdot & \cdot\\ \end{matrix}$$

Just connect 12 dots of these dots to make a cross that has $$5$$ dots inside it and $$8$$ dots outside it?

For an editor-guy, here is a screenshot of these dots:

You can draw a cross that satisfies these constraints like this:

12 dots connected, 5 dots inside, 8 outside. The trick is to realise:

that you can draw a cross using diagonal lines rather than trying to use just horizontal and vertical connections (as a grid might automatically lead you to try).