Computer "unbeatable" at HU Limit Hold'em
Computer scientists at the University of Alberta in Canada
have designed a computer program that uses optimal strategy to beat HU Limit Hold'em. Named Cepheus, the program is being deemed "unbeatable."
To read more or even play against Cepheus, you can go to the university's site here: http://poker.srv.ualberta.ca/
Other articles I found that give more details are here: