In 2017, an AI program named Libratus made headlines by defeating four top professional poker players in a 20-day competition of no-limit Texas Hold’em. This marked a significant moment in AI history because poker is a game of incomplete information and bluffing, posing a unique challenge for AI. Libratus’s success demonstrated the potential of AI in complex decision-making scenarios. The event was held at the Rivers Casino in Pittsburgh, highlighting the growing capabilities of AI beyond games like chess and Go.