AlphaGo also had more difficulty when it played with a black stone, according to Lee. In Go, two players take turns putting black or white stones on a 19-by-19-line grid, with a goal of putting ...

Journalists watch a big screen showing live footage of the third game of the Google DeepMind Challenge Match between Lee Se-Dol and AlphaGo at a hotel in Seoul, South Korea, on Mar. 12, 2016.

AlphaGo, the computer created by DeepMind, the Artificial Intelligence (AI) arm of Google, established a commanding three consecutive victories over South Korea's grandmaster Lee Sedol.