We can now tackle the big '16' clue. There are many ways that a '16' clue can be arranged, let's
look at each of them in turn,
- 1x16: The puzzle isn't big enough for this.
- 16x1: The puzzle isn't big enough for this.
- 8x2: There isn't enough horizontal space for this - there is only enough space for 2x7.
- 2x8: There isn't enough vertical space for this - there is only enough space for 2x6.
- 4x4: This is the only arrangement that can fit. With all the other rectangles in place,
there is also only one ways a 4x4 rectangle can fit as well - look at the next step to see
what this arrangement is.