骑士巡游,“马走日字” 枚举8个方向,回溯 000000000 000000000 0023 10 1542500 00|1652491400 001122118300 006172013800 0021|127129|oo 0100000000 00000000010 骑士巡游，“马走日字” 枚举8个方向，回溯 23 10 15 4 25 16 5 24 9 14 11 22 1 18 3 6 17 20 13 8 21 12 7 2 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0