论文部分内容阅读
下面的九宫格里放着九张数字卡片,现请你移动其中的三张卡片,使得每一行、每一列以及对角线上三个数相加之和都相等,你能办到吗?
The following Jiugongge put nine digital cards, now you move the three cards, so that each row, each column and the diagonal of the sum of the three numbers are equal, can you do it?