A Simple Method of Filling 1-9 in 3×3 Grid

Huang Rong once cracked the nine squares in The Legend of the Condor Heroes. The formula is: wear one of nine shoes, three on the left, seven on the right, two on four shoulders, six on eight, and five in the middle. In fact, just remember that "24 has shoulders and 68 is enough". Jiugongge: 2

four

six

eight

If the sum of all vertical and horizontal lines is equal to 15, I think all students under 1 will fill in these blanks. One of the nine squares: 2 9 4.

7 5 3

6 1 8

When the above picture is rotated clockwise once, the following three change pictures can be obtained: 9 grid 2: 6 7 2.

1 5 9

8 3 4

Jiugong Gesan: 8 1 6

3 5 7

4 9 2

Jiugong Gesi: 4 3 8

9 5 1

2 7 6

But "24 has shoulders, 68 is enough" is just a shortcut to prompt the answer, not a specific solution. The specific parsing process is as follows: 1+14( 5/9 or 6/8) Effective combination: 1/5/9 and 1/6/8 2+13 (6/7 or 5/8 or 4/. 7 or 4/8) Effective combination: 3/5/7 and 3/4/8 4+1(3/8 or 2/9 or 5/6) Effective combination: 4/5/6 (*4/3/8, *4/2/9 has been repeated. Therefore, the effective combination that meets the conditions is the above eight groups. In the above eight groups of arrangements, 2, 4, 6, and 8 appear three times each (satisfying three lines of vertical and horizontal inclination), so you must live in the corner of Jiugongge (that is, shoulders and feet); 5 appears 4 times (four lines satisfying vertical and horizontal biclinics), so it is in the middle position. The problem of Jiugongge will be solved.