 1.Divide the grid into 4 quarters each having "n"2/4 cells and name them crosswise thus

2.Using the Siamese method (De la Loubère method) complete the individual magic squares of odd order 2"k" + 1 in subsquares A, B, C, D, first filling up the sub-square A with the numbers 1 to "n"2/4, then the sub-square B with the numbers "n"2/4 + 1 to 2"n"2/4,then the sub-square C with the numbers 2"n"2/4 + 1 to 3"n"2/4, then the sub-square D with the numbers 3"n"2/4 + 1 to "n"2.