Texas Hold'Em Artificial Intelligence

This is pretty impressive for an AI. It seems realistic that poker would be a harder game to develop an AI for, since you don't have all the information,

Though not yet the equal of the best human players, GS1 outperformed the two leading "pokerbots" in playing heads-up, limit Texas Hold'Em in tests at Carnegie Mellon earlier this year. Both of GS1's opponents were commercially available programs that, like other pokerbots, incorporate the expertise of human poker players. GS1, by contrast, develops its strategy after performing an automated analysis of poker rules.

Computer Poker Program Sets Its Own Texas Hold'Em Strategy | Science Blog

unlike a game like chess.