Best solution so far! hdb++

Works also always¹ for "selections" which are not parallels of a diagonal, like 1-10-7-16.

Cheers Rolf

( addicted to the Perl Programming Language)

¹) prove left for interested readers.

In reply to Re^2: Not A Magic Square But Similar by LanX
in thread Not A Magic Square But Similar by Limbic~Region

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