February 2023 - Solution
February 2023 Solution:
There are many possible solutions; these specific ones were found by Motty Porat:
N=20:
[(0, 0), (1, 2), (2, 4), (3, 1), (4, 9), (5, 12), (6, 18), (7, 15), (8, 19), (9, 5), (10, 16), (11, 10), (12, 3), (13, 17), (14, 6), (15, 8),
(16, 13), (17, 11), (18, 7), (19, 14)]
N=31:
[(0, 0), (1, 2), (2, 4), (3, 1), (4, 3), (5, 8), (6, 10), (7, 12), (8, 14), (9, 16), (10, 18), (11, 21), (12, 25), (13, 28), (14, 26), (15,
24), (16, 30), (17, 6), (18, 29), (19, 5), (20, 11), (21, 9), (22, 7), (23, 13), (24, 20), (25, 17), (26, 19), (27, 22), (28, 15), (29,
23), (30, 27)]