Phalanx is a chess playing program. Phalanx is xboard compatible. Running with xboard: 'xboard -fcp phalanx'. Note that permanent brain (pondering) is off by default. Newer versions of xboard set it on with the 'hard' command. If this does not work, try 'xboard -fcp "phalanx -p+"' or (for <4.0.0 versions of xboard) change your initString (see Xboard documentation for details). It's better to stop permanent brain in both programs, when playing Phalanx against another program on a machine with one CPU. It's also possible to run phalanx without xboard. Do "phalanx -h" to get a list of command line options. One important command of phalanx's ASCII interface is "help". WWW: http://www.crosswinds.net/~dobes/phalanx/