MIT researchers proved certain Super Mario levels are mathematically "undecidable" — no algorithm can reliably determine if they're beatable. Using level gadgets that simulate theoretical computers, they placed Mario in computing's hardest complexity class, with implications for robotics and AI.

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Certain Super Mario levels are mathematically "undecidable" — no algorithm can reliably determine if they're completable. MIT researchers demonstrated this by embedding theoretical computer simulations into level design, placing Mario in computing's hardest known complexity class.

Super Mario is mathier than you think

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