I like Playgrounds a lot, and at first I thought coding the monster to do things, was going to be really easy, but I was totally wrong.  I only just started coding on Playgrounds, and I already got stuck on some coding areas for a while.  But just recently, I figured out a problem solving strategy, that has helped me a ton.  What I used to do, was just type in the lines of code that I thought would work, and hit go.  Well, that worked pretty well for the first couple of coding challenges, but then the lines of code started to get really long, and I would type in what I thought was right, hit go, see that I as wrong, and have to try to figure out what was wrong.  But I would have a ton of lines of code to go through, and I couldn’t figure it out, and then I would have to start all over, which was really frustrating.  But then I started putting in a few lines of code, and hitting play, and if I was right, with just those few lines, I would continue, and if I was wrong, I would know exactly where I went wrong, and what to fix, and every few lines or so, I would click go, and keep repeating my strategy, and it worked, and works, really well for me.