Years ago I played a version of gomoku that was written in Lisp that learned as you played. After a few rounds, it became nearly unbeatable. This was on Unix System III on a small PDP-11.
I have searched quite a bit for that Lisp code and haven't been able to find it. The versions I've found haven't been the one I'm looking for. Also, I'm not looking for one that requires Emacs. Unfortunately, I don't remember any more details.
Do you know where I can find it?