How can we draw $14$ squares to obtain an $8 \times 8$ table divided into $64$ unit squares?
How can we draw $14$ squares to obtain an $8\times8$ table divided into $64$ unit squares?
Notes:
-The squares to be drawn can be of any size.
-There will be no drawings outside the table.
The comments on the question pretty much contain all the information you need about this question. I figured I'd add some pretty pictures. In general if $n\geq 4$ then you can draw $2(n-1)$ squares to end up with an $n\times n$ grid of squares and you can't do it with less.
For even $n$ the solution looks like this:
For odd $n$ the solution looks like this: