Source:

JavaProver.zip. This code is provided as-is and is unsupported.

This code was written by students in Stanford University's cs227b General Game Playing course. This code can read in and parse game descriptions, compute legal moves in a given game state, and compute the next state of a game given the current state and moves for the players. It does not contain the TCP/IP code for communicating with the Game Manager. This code is not necessarily optimal, fast, easy to read, or to extend, but is provided for reference to anyone that may find it useful. Again, this code is unsupported.

Thanks to Nick Halderman for providing this code (with the caveat that it is hastily-written, and not representative of the author's skills), as well as Michael Tung, Justin Flatt, and Andrew Willis-Woodward.