The PushMeAround Puzzle revamped. File in LittleThings61.st, find the LittleThings category and the ArrangedTilesclass in your browser and read the class comment. Or (if you are too impatientto do it) make sure you have a Transcript window opened (important!),write "x := ArrangedTiles new. x runAway" to a Workspace, select it, "do" it,and watch. (When you have had enough of watching, you have to break the processmanually as instructed by the application's display panel.)