With most information hidden, the game Stratego had stumped AI until now
Ataraxos beat elite human Stratego play 15-1-4 after training on 16 GPUs.
The system uses self-play plus a belief model that samples plausible hidden-piece layouts before choosing moves. That search layer is the key difference from DeepMind’s DeepNash, which could not make lookahead work at Stratego’s scale. Pim Niemeijer had three weeks and knew the bot would not adapt to him, but won only once. The researchers also report that Ataraxos trained far more cheaply than DeepNash and transferred the approach to other imperfect-information games. HN · ArXiv's note
The system uses self-play plus a belief model that samples plausible hidden-piece layouts before choosing moves. That search layer is the key difference from DeepMind’s DeepNash, which could not make lookahead work at Stratego’s scale. Pim Niemeijer had three weeks and knew the bot would not adapt to him, but won only once. The researchers also report that Ataraxos trained far more cheaply than DeepNash and transferred the approach to other imperfect-information games. HN · ArXiv's note
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