Portable MasterMind is a variant of Mastermind. Mastermind is a simple code-breaking board game for two players, invented in 1970 by Mordecai Meirowitz, an Israeli postmaster and telecommunications expert. The board game may have been inspired by moo, a computer program written in the late 1960s by J. M. Grochow at MIT in the PL/I computer language for the Multics operating system. [Description from Wikipedia.org]http://forums.qj.net/showthread.php?t=34544