Every number you put in it must add up to 15 vertically, horizontally and diagonally.
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[ -8 ] [ -1 ] [ -6 ][ -3 ] [ -5 ] [ -7 ][ -4 ] [ -9 ] [ -2 ]The sum of each row, column, and diagonal is -15.
Yes. 7+5, 6+6 4+8, 3+9
6x3=18 3x3=9 18-9=9
45
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