The First Solutions
Chessboard size 47×47
1, 3, 5, 2, 4, 9, 11, 13, 15, 6, 8, 19, 7, 22, 10, 25, 29, 36, 39, 42, 44, 33, 38, 43, 46, 40, 37, 41, 45, 47, 21, 17, 24, 26, 12, 14, 16, 18, 20, 23, 34, 28, 30, 32, 27, 35, 31