I just created a new forum for Lisp Quiz and moved over the initial Minesweeper Challenge. Previously, I had put it into the Common Lisp topic, but there is no reason that Lisp Quiz solutions should be limited to Common Lisp. If you'd like to solve any of the problems in Scheme, Emacs Lisp, Clojure, or Arc, you're more than welcome to do so. That said, the Minesweeper engine is written in Common Lisp, so you'll have to translate it into your favorite dialect in order to complete the challenge. Consider the translation step training toward making you a fully multi-lingual Lisper.