{"id":20146,"date":"2026-10-02T12:10:31","date_gmt":"2026-10-02T12:10:31","guid":{"rendered":"https:\/\/news.theck1.no\/?p=20146"},"modified":"2026-10-02T12:10:31","modified_gmt":"2026-10-02T12:10:31","slug":"with-most-information-hidden-the-game-stratego-had-stumped-ai-until-now","status":"publish","type":"post","link":"https:\/\/news.theck1.no\/?p=20146","title":{"rendered":"With most information hidden, the game Stratego had stumped AI\u2014until now"},"content":{"rendered":"

AI-rewritten:<\/strong> This is a summary of an article from Ars Technica, rewritten by AI (Qwen, running locally) to make it easier to read. The facts come from the original article – read it for the full story.<\/p>\n

Ars Technica •
\n Jacek Krywko
\n • October 1, 2026<\/strong><\/div>\n\n

Researchers from Carnegie Mellon, MIT, New York University, and Stanford have created an AI named Ataraxos that defeated Pim Niemeijer, a top Stratego player, 15 games to one with four draws. Unlike previous attempts by DeepMind, this system required only 16 GPUs and a few thousand dollars to train. In the game of Stratego, players hide military ranks from each other, revealing identities only when pieces collide. This creates massive hidden information over long periods, making it difficult for computers to predict outcomes compared to games like chess or poker.<\/p>\n

<\/p>\n

Ataraxos learned by playing against itself in 163 million self-play sessions. It uses a second neural network to guess the opponent’s hidden pieces based on their movements, allowing it to sample plausible scenarios instead of checking every possibility. This approach lets the AI think ahead before acting, something earlier models like DeepNash could not do effectively due to the game’s complexity and length. The team notes that Ataraxos avoids reacting impulsively, working methodically even when facing significant deficits.<\/p>\n

During a recent tournament, Niemeijer won only one of twenty games against Ataraxos, while the AI won 38 of 40 games at the 2025 World Championship. The bot also introduced new strategies, such as placing its flag near two bombs in a rarely seen setup. While luck plays a role in Stratego, the AI’s ability to handle hidden information and bluff effectively demonstrates a significant leap in artificial intelligence capabilities for imperfect-information games.<\/p>\n

\n

Source:<\/strong> Ars Technica •
\n Jacek Krywko
\n • October 1, 2026<\/p>\n

Read the original article at Ars Technica →<\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

AI-rewritten: This is a summary of an article from Ars Technica, rewritten by AI (Qwen, running locally) to make it easier to read. The facts come from the original article – read it for the full story. Ars Technica • Jacek Krywko • October 1, 2026 Researchers from Carnegie Mellon, MIT, New York University, and<\/p>\n

READ MORE<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-20146","post","type-post","status-publish","format-standard","hentry","category-artificial-intelligence"],"_links":{"self":[{"href":"https:\/\/news.theck1.no\/index.php?rest_route=\/wp\/v2\/posts\/20146","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/news.theck1.no\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/news.theck1.no\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/news.theck1.no\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/news.theck1.no\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=20146"}],"version-history":[{"count":0,"href":"https:\/\/news.theck1.no\/index.php?rest_route=\/wp\/v2\/posts\/20146\/revisions"}],"wp:attachment":[{"href":"https:\/\/news.theck1.no\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=20146"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news.theck1.no\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=20146"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news.theck1.no\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=20146"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}