Haskell, Genetic Algorithm, Graph Theory, Programming.
SW), (13, SE, 17, NW), (13, S, 14, N), (14, NE, 17, SW), (14, SE, 18, NW), (14, S, 15, N), (15, NE, 18, SW), (15, SE, 19, NW), (15, S, 16, N), (16, NE, 19, SW), (16, SE, 20, NW), (17, SE, 18, NE), (17, S, 18, N), (18, SE, 19, NE), (18, S, 19, N), (19, S, 20, N) ] Tedious, but it works! I can now