Click the screenshot below to visit the FormulaOne website...
The above depiction represents the only code needed to generate the solutions for the symmetrical order 5 magic squares.
Notice the line: b1 + d5 = 26 &
The user could place any parameters of interest in this section and let the program find the solution using it's automatic backtracking and logic constraint.
This is currently a free download, and I am indebted to Juro Bystricky for this wonderful gift.