This chapter implements a GUI version of the "dice of doom" game from
Barski's "Land of Lisp". This implementation uses a lazy game tree and 
adds an AI player. 

To play or to experiment, open the file 

	 source.rkt 

in DrRacket. The instructions for playing are at the top of the file. 
Our tests are at the bottom of the file in a separate 'test' submodule.