Explanation 14x14 magic square
The 14x14 magic square is double odd (2x7 is double prime number). Double prime number magic squares have an irregular structure. That's why a pure panmagic and/or symmetric and/or compact 14x14 magic square does not exist. To get 14x14 magic squares you need to puzzle. Most perfect magic 14x14 square is a concentric or inlaid magic square.
Methods to construct the 14x14 magic square are: