Magical
Squares
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- This 4x4 Magical Square works same as a 3x3 one. - You can move numbers to right, left, up, and down, but not diagonal.
- This time you need to arrange numbers so that the numbers in each row, each column and both two diagonals add up to exactly 34.
- Why 34? The Magical Squares Sum is calculated in the following
way:
n*(n*n + 1) / 2 where n is the size of squares. So,
for 3x3, n = 3, and therefore 3*(3*3 + 1) / 2 = 30 / 2 = 15.
For 4x4, n = 4, and therefore 4*(4*4 + 1) / 2 = 68 / 2 = 34.
- More information on this puzzle can be found in "a XML Site DB."