https://www.google.com/search?q=%E6%9F%AF%E6%B4%81%E5%92%8CA...
Sites like Sina and Sogou are able to report, and those aren't small sites. They got millions of views every day.
That site you quoted is anti-PRC news site. Not trying to discredit, but it isn't a total ban. At least the result isn't and probably won't.
That's the lowest bar in the world. It's a damn board game. The stream was six hours of two men sitting across a table from each other placing black and white stones. Optionally, some of the streams had commentators talking about how good the moves were as they were played. That such a thing could be subjected to censorship is absurd.
As for the result not being censored, well, it's literally a single bit of information. That was only censored because it's not practical to do so.
According to the tieba page, the ban was first noticed as CCTV5 deleted their Weibo (a microblogging service) post on the livestream.
Welcome to the 4th part of confidence doctrine -- cultural confidence.
I haven't been back in a while but my guess is things have sort of "settled in" more. The Chinese Firewall is absurdly effective - last I heard it was difficult to even get a VPN through.
http://chinadigitaltimes.net/2017/05/minitrue-no-live-covera...
and in Chinese:
http://chinadigitaltimes.net/chinese/2017/05/%E3%80%90%E7%9C...
"Regarding the go match between Ke Jie and AlphaGo, no website, without exception, may carry a live stream. If one has been announced in advance, please immediately withdraw it. Please convey the gist of this to sports channels. Again, we stress: this match may not be broadcast live in any form and without exception, including text commentary, photography, video streams, self-media accounts and so on. No website (including sports and technology channels) or desktop or mobile apps may issue news alerts or push notifications about the course or result of the match."
Sounds pretty harsh... will be interesting to see how the rest of the event goes.