The world's best Go player lost to Google's artificial intelligence

Chinese Go player Ke Jie reacts as he plays a match against Google's artificial intelligence program, AlphaGo, during the Future of Go Summit in Wuzhen in eastern China's Zhejiang Province. WUZHEN, China (AP) -- A computer beat China's top player of go, one of the last games machines have yet to master, for a second time Thursday in a competition authorities limited the Chinese public's ability to see. Ke Jie lost despite playing what Google's AlphaGo indicated was the best game any opponent has played against it, said Demis Hassabis, founder of the company that developed the program. AlphaGo defeated Ke, a 19-year-old prodigy, in their first game Tuesday during a forum organized by Google on artificial intelligence in Wuzhen, a town west of Shanghai. They play a final game Saturday.