puzzlescript
Rodent's Revenge (Ken Calder)
> "You push blocks to trap cats and turn them into cheese. A cat must be surrounded on all sides to turn into cheese." - Author's description [https://groups.google.com/forum/#!topic/puzzlescript/bTU8OWEeK0o] Play here [http://www.puzzlescript.net/play.html?p=c0a86b3cbc3e58c45550] (Browser)