I'm proud to be leaving a humble contribution to UPenn's artificial-intelligence-class.org taught by @ccb, a new homework I developed on logical inference and knowledge-based agents.
It is built upon an original game by @laramar in which R2-D2 is trying to save Luke Skywalker from a cave system. There are all sorts of obstacles in the caves, like pits, walls, and a monster called the Wampa.
Since it is dark in the caves, R2 can't see whether an adjacent room is safe...