Google's AlphaGo, a creation of its DeepMind division, secretly played anonymous Go matches on public servers in the past few days. Using the name "Master" or "Magister," AlphaGo was operating on the Tygem and FoxGo servers. It engaged in dozens of matches against top Go players from around the world.
Master won 50 games in a row, which started to make people suspicious. Reddit users wondered if Go champion Lee Sedol was playing or if AlphaGo was responsible.
So a mysterious AI, 'Master', is trouncing top Go players online 50-0, likely superhuman, and no one knows who created it. How cyberpunk.— gwern (@gwern) January 4, 2017
DeepMind CEO Demis Hassabis eventually confirmed its AI was behind the win streak. It was using the matches to test a new prototype version of AlphaGo.
Now that our unofficial testing is complete...we're looking forward to playing some official, full-length games later this year in collaboration with Go organizations and experts, to explore the profound mysteries of the game further in this spirit of mutual enlightenment. - Hassabis