(The predecessor of Sudoku is "Jiugongge", which originated in China. However, the algorithm at that time was more chaotic than the current one, which required that the sum of the three numbers in the vertical, horizontal and oblique directions should be equal to 15, not just that the numbers could not be repeated. This is also the origin of the "Nine Palaces Diagram" in the Confucian classic Book of Changes)
发表于 2022-11-14 11:43:46
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