AlphaGo emerges victorious in human vs AI Go battle

AlphaGo has won the fifth of five games of Go against South Korean grandmaster Lee Se-dol. The final game was a close-run thing, spilling into overtime with the AI just half-a-point ahead at one stage. The best-of-five tournament, which saw the software win 4-1, is considered to be a significant moment in the development of artificial intelligence. Go is a sophisticated game with more potential moves than there are atoms in the observable universe, requiring a greater capacity for on-the-fly "thinking". In a post on Google's Asia-Pacific blog, top American go player Michael Redmond said: "It was difficult to say at what point AlphaGo was ahead or behind, a close game throughout. "AlphaGo made what looked like a mistake with move 48, similar to the mistake in Game Four in the middle of the board.