Teppo Salonen's BluffBot 2.0 is now the best No Limit Hold'Em poker bot in the world. In the competition held at the 22nd Conference on Artificial Intelligence in July 2007, BluffBot beat all 9 other competitors including University of Alberta and Carnegie Mellon University to mention a few. You can check out the BluffBot 2.0 - Strategies for Heads-Up No Limit Holdem that also offers a free newsletter teaching readers how to play heads-up No Limit Holdem..
