Chess has an undeniable mystique. You've seen it in the movies: Xavier vs. Magneto; Holmes vs. Moriarty; Frank vs. HAL. No dice, no random deal of cards, just mortal enemies locked in a war of wits.
Duolingo is a popular language learning app with 103.6 million monthly active users. The company announced on Tuesday that it is testing a new chess course. Duolingo plans to roll out the chess course ...
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