What DeepMind's AlphaStar beating StarCraft players means for AI research

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After playing benchmark matches back in December, DeepMind's StarCraft playing AI AlphaStar has beaten professional players in a series of games. Blizzard's StarCraft is complex E-sports game with no single winning strategy. It has its own AI in singleplayer mode, but it relies on hand crafted rules, having somewhat more information on the state of the map and its opponents than actual players, and being able to execute commands simultaneously, much faster than humans. Given its complexity, beating humans is considered another, huge milestone in AI research. But all other StarCraft AIs before relied mostly on a series of manually written rules and restrictions.