Computer beats human Go master

Google's computer program AlphaGo defeated its human opponent, South Korean Go champion Lee Se-dol, on Wednesday in the first game of a historic five-game match between human and computer.

AlphaGo's victory in the ancient Chinese board game, also known as weiqi, is a breakthrough for artificial intelligence, showing the program developed by Google DeepMind has mastered one of the most creative and complex games ever devised.

Commentators said the game was close. The result was unpredictable until near the end. Lee's loss was a shock to Go fans.