The last puzzle I completed was called Across the Board.

The coding concept focused on functions.  What was challenging for me, was getting my function to work. (it never did, so I moved on). I kept putting in what I wanted my function to do, but it kept fixing things, and saying there were errors in what I had said, but I didn’t know what to do.  As I had said, I couldn’t figure out what to do, so I moved on, but hopefully I will figure it out soon.  I’m interested in finding out what I can do to fix the errors.