## Semi-Magic Squares of Order 21 With Digits 2 and 1

Above two magic square are semi-magic squares with locks of orders 3 and 7. The semi-magic sums of semi-magic squares is **35555555552**. Instead of semi-magic we can construct magic square also, but in this it will be without blocks.

Morever, the above magic squares are **upside-down**. They are **mirror-looking** too, but in this case 2 become 5, i.e., it is no more with 2 and 1. It will be with 5 and 1.

Categories: Curiosities