Part of Carl's Christmas Puzzle Hunt: 2014
[Pentominous is a logic puzzle I recently discovered at GM Puzzles, where Grant Fikes invented the puzzle. The boys knew that I had already composed a couple of puzzles of this type and submitted them to that website. I've really enjoyed introducing people to this puzzle. Even people that have said, "Oh, I'm not good at puzzles like this", have ended up enjoying Pentominous quite a bit when they've tried it. This particular Pentominous is a pretty good first introduction to the puzzle. It provides some very straightforward logical steps at every point. Give it a try, (instructions are included below).]
Divide the grid into 20 pentominoes (regions consisting of 5 connected cells), so that no two pentominoes of the same shape, (including rotations/reflections), share an edge. A cell with a letter in it must be part of the pentomino shape associated with that letter. An inventory of possible pentomino shapes is given below.
Keep your eyes out for another hint that will tell you how to get a hint for the code from the solution to this Pentominous!