Block-Wise Unequal Sums Magic Squares

There are magic square where it impossible to divide in sub-blocks with equal sums magic squares. For example, in case of order 12, it is impossible to divide in equal sums magic squares of order 3. In case of order 20, it is impossible to divide equal sums magic squares of order 5. In case of order 28, it is impossible to divide equal sums magic squares of order 7, etc. This paper brings constructions of magic squares with sub-blocks of unequal sums. The work is for the magic squares of orders, 12,18, 20, 30 and 36. It is revised version of author's [ previous work [28] done in 2017.