Ataraxos AI Beats Top Stratego Player in Reported Superhuman Breakthrough

Researchers from Carnegie Mellon University, NYU, Stanford University and MIT have reported that Ataraxos, an AI system for Stratego, achieved what they describe as the first superhuman result in the hidden-information board game after it defeated Pim Niemeijer 15 wins, one loss and four draws. The result, published in Nature, matters because Stratego hides each player's piece identities and presents over 10^33 possible piece configurations, a scale that had kept top human play ahead of earlier AI systems.