Answer to Puzzle Contest:

I. The letters are in the shape of a square, and the top line is 1 squared (1), which is equivalent to the letter A in the alphaber. The left side is 2 squared, so D, right side is 3 squared, which is I, and the bottom is 4 squared, which is 16, and the 16th letter of the alphabet is P.

Winner: KC Curry