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Google v Go master - in 60 seconds
9 March 2016 Last updated at 09:12 GMT
In a landmark battle between man and artificial intelligence (AI), the world champion of the game Go was narrowly defeated by his computer opponent.
Google's DeepMind AlphaGo program beat South Korea's Lee Se-dol in the first of a series of games in Seoul.
Read the full story: Google AI beats Go master in first game