Knights tour with 0 backtracking moves
1  34 3  18 41 32 13 16
4  19 64 33 14 17 44 31
35 2  37 40 63 42 15 12
20 5  56 47 38 45 30 43
55 36 39 62 57 48 11 26
6  21 52 49 46 27 60 29
51 54 23 8  61 58 25 10
22 7  50 53 24 9  28 59

Knights tour with 0 backtracking moves
1  34 3  18 41 32 13 16
4  19 64 33 14 17 44 31
35 2  37 40 63 42 15 12
20 5  54 47 38 45 30 43
55 36 39 62 53 48 11 26
6  21 52 49 46 27 60 29
51 56 23 8  61 58 25 10
22 7  50 57 24 9  28 59

Knights tour with 0 backtracking moves
1  34 3  18 41 32 13 16
4  19 64 33 14 17 44 31
35 2  37 40 63 42 15 12
20 5  52 47 38 45 30 43
51 36 39 62 53 48 11 26
6  21 58 49 46 27 54 29
59 50 23 8  61 56 25 10
22 7  60 57 24 9  28 55