Some people here probably followed Deepmind's AlphaGo, then AlphaGoZero and finally AlphaZero's achievements. However Google did not release the weights for all thoses networks, so a community has formed trying to reproduce and maybe improve the AlphaZero engine.
To do this, a distributed effort to play self-play games has started, and the training is done on a single powerful computer (It can update the weights in about 5 hours currently).
The developers also allow everyone to play against their engine:
http://play.lczero.org/
Further information can be found on the website http://lczero.org/ which necessarily is rather technical.
And while people like Magnus Carlsen struggle to reach 2850 Elo, the engine struggles as well... to reach 4250 Elo. Yes, that is a 4, not a 3. But how "real" that number is, is the real question.
