I would provide some example code, but not even sure where to start on this one. I have a 7x7 magic square with random numbers filled in, and I have to fill in the numbers that are empty (my daughter's 3rd grade math homework got me on this). So, on line one I have 22, blank space, 30, blank space, 38, 21, 46. On line 2 I have 47, 23, blank space, 31, blank space, 39, blank space. Now, each line needs to equal 175, both down and across. I know that 20 numbers are missing (1 through 20), and that each number can only be used once. For fun, I've been trying to figure out the best way to script this, but my brain is not cooperating with me. Any suggestions on where to start with this?