I just boosted the last #toyprogrammingchallenge that I had posted from over a year ago.
I still think this is an interesting problem to solve. I have yet to attack it myself, but am definitely considering it. I have recently been doing a bunch more smaller exercises, and perhaps can post a few of those. Though I haven't necessarily written them, I have found them fun to do.
I do have some ideas, but for now I am waiting to see if anyone is even still interested in the #toyprogrammingchallenge puzzles anyway.