32 154

5432 1

2 1543

432 15

For example:

Calculate the first grid, 15-7-6 = 2, then the last grid in the first row, 15-2-9 = 4, first calculate the two grids you know, and then subtract the two you already know from 15 to know the other grid you don't know.

Extended data;

Black spots and white spots are arranged in an array, which has endless mysteries; The pattern on Luoshu just corresponds to nine numbers from 1 to 9, and the sum of three numbers on vertical, horizontal, oblique and three lines is equal to 15. At that time, people didn't know it was the third-order magic square in modern mathematics, and this mysterious arrangement of numbers was called Nine palace map.

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