I'm familiar with the jam - I also took part :> I understand not having the source code anymore, though. I don't have it for The First Heist, either, and would have to remake it from scratch if I received feedback on that.
It's still a fun game! I do want to empathize that Penny and I enjoyed ourselves. Well, as much as Penny can enjoy herself playing Chess, anyway :p But I had fun with it, and even won a match on my own just by testing out moves.
Thank you for taking the time to reply! :>