Revised on July 12, 2023

During past years author worked with block-wise, bordered and block-bordered magic squares. This work make connection between block-wise and bordered magic squares. We started with block-wise bordered magic squares of orders 120 and 108. Based on these two big magic squares, the inner order magic squares multiples of 12 are studied. By inner orders we understand that magic squares of orders 96, 84, 72, etc. The construction of the block-wise bordered magic squares multiples of 12 is based on equal sum blocks of magic squares of order 12. We have taken 16-types of magic squares of order 12. The advantage in studying block-wise bordered magic squares is that when we remove external border, still we are left with magic squares with sequential entries. It is the same property of bordered magic squares with single digits numbers. The difference is that instead of numbers here we have blocks of equal sum magic squares of order 12. For multiples of orders 4, 6, 8 and 10 see the links below:
1. Block-Wise Bordered and Pandiagonal Magic Squares Multiples of 4.
2. Block-Wise Bordered Magic Squares Multiples of Magic and Bordered Magic Squares of Order 6.
3. Block-Wise Bordered and Pandiagonal Magic Squares Multiples of 8 – Revised.
4. Block-Wise Bordered Magic Squares Multiples of 10 – Revised.

This work is up to order 120. Examples below are only up to order 48. The higher order examples can be seen in Excel file attached at the end of this work.