Pictured below is the world's first successful stand-alone Camelot PC program, and the winner of the 2008 WCF Camelot Computer World Championship.  The program, created by Rick Fadden, is called CHAXX.  The program's current version, Chaxx 1.19, although still grappling with the challenges of endgame technique, is already strong enough to over-match most human players in the opening and the middlegame.  Current work on the program includes a GUI interface, an opening book, a precise determination of Knight/Man ratios, and endgame strategies.  You can view some of Chaxx's games here and here.