For example:
4 9 2 = 15
3 5 7 = 15
8 1 6 = 15
= = =
15 15 15
You may wish to try this on the squares below.
Albrecht Dürer's magic square in the drawing "Melancholia":-
16 3 2 13
5 10 11 8
9 6 7 12
4 15 14 1
Magic squares related to planets:- (In ancient astrology the Sun was regarded as a planet.)
Magic squares were used as talismans which were said to cure diseases and ensure success in business and in battle.
Also, this article in Wikipedia goes into more detail.
