% About 251s rows = 5; cols = 5; puzzle = [| 0, 3, 0, 0, 0 | 0, 0, 2, 2, 4 | 2, 0, 0, 0, 3 | 2, 1, 2, 2, 3 | 3, 3, 3, 1, 3 |];