I met many friends who also like math problems and asked 9 square questions. I am here to make answers and solutions, hoping to give you some help. Nine squares, twenty-five squares and even eighty-one squares, as long as they are odd squares, can be added with horizontal squares, real squares and diagonal squares to get the same number. There are only sixteen squares for even squares, and there are some rules. There are three squares, five squares, seven squares and nine squares. Sangong Grid (and 15) 8 1 6 3 5 7 4 9 2 Wugong Grid (and 65)17241815235714/320. 8+09 213118 2529 seven squares (and175) 30 39 48119 28 38 47 79/kloc. 5 14 16 25 34 36 45 15 24 33 42 44 4 2 1 23 32 4 1 43 12 22 3 1 40 49 2 65438.7 58 69 80 / kloc-0/ 12 23 34 45 57 68 79 9 1 22 33 44 46 67 78 8 10 2 1 32 43 54 56 77 77 18 20 3 1 42 53 55 65 66 1 7 65438 Write1in the middle of the first line, then move down to the bottom, move one space to the right to write 2, then write to the far right, then move to the far left, move one space up and then write to the upper right corner. When you meet a number, write down a space and continue to write to the right. According to this rule, you can write any odd square grid. Even the squares are irregular, except for the sixteenth house, nothing seems to be filled in. There is also a rule in the filling of the sixteenth house, which is called "orderly arrangement and shoulder exchange", that is, the first line writes 1, 2, 3, 4, the second line writes 5, 6, 7, 8, and the fourth line writes 13, 14,1. I have another way to deal with odd squares. At 1 station, just walk down in the order of "ma bu" or horse stance just look, but pay attention. Write down the following contents directly every few squares. Such as Palace 5: 23121209418721024132161519820. Shen Jie's "Tangshan Huangling Jiugong Grid Solution 2002-12-2410:13: 24" was drawn when I just remembered it. Please advise me if there are any mistakes. When entering Yang for the first time, all the nine squares should be pressed down to 1.23 4 5 6 789, and when entering Yang, 2 4 6 8 should be convex and the rest should be concave. After pressing 2-4-8-6, all nine squares between yin and yin should be pressed. When entering yin, 34567 should be convex and the rest should be concave. The cracking order is 7-3-2-8-1-7-9-3-5-2-4-8-6, and then you can return to Yang and raise all the nine squares, just like when you first entered Yang, so the cracking order is 5-1-7-9-3-.