I think it would be really great if you could add the expected results and their graphical representations to the examples. E.g.:
Coordinates: [(8, (20, -60)), (0, (40, 0)), (3, (60, -40)), (4, (40, -40)), (1, (40, -20)), (6, (0, -40)), (9, (30, -80)), (5, (20, -40)), (7, (40, -60)), (2, (80, -40))]
width: 5, height: 5
I think it would be really great if you could add the expected results and their graphical representations to the examples. E.g.: