AlphaGo plays Lee Sedol in 2016AlphaGo and Lee Sedol playing GoGoogle via Getty ImagesBy Timothy RevellGoogle DeepMind’s Go-playing AI has done it again. After beating top player Lee Sedol at the ancient Chinese game in 2016, the AlphaGo AI has been secretly taking on more of the world’s best players – and beating them. For the last few days, an unknown...