Unknown master beats top Go players

A mysterious "master" has been beating elite Go players online, leading some to suspect that it may actually be a top-level computer.

Until recently, even the best AI programs have struggled to beat the world's top Go players - that is until March when a program called AlphaGo beat South Korean Lee Se-dol, one of the world's best.

However, a player registered with an ID of "Master" on Chinese online board game platforms eweiqi.com and foxwq.com has won 45 fast-paced online matches since Dec 29 against a group of elite Go players, including Lee's compatriot Park Jung-hwan, Japan's Iyama Yuta and China's top player Ke Jie, triggering interest in its identity within the professional Go circle.