title: How Leela Zero (new chess engine) works?
body: <p>Is there a <strong>simple explanation</strong> for dummies like me? I know that there's a source code of Leela, I've heard that it uses neural networks with MCTS (plus UCT), but there are lot of hard things remaining. Do I need to train Leela myself by running it? Or do I need to download something from Internet? (so-called trained data?) If so, do I need constantly update this data? Does it play stronger with every game?</p>
  
  <p>Thank you much for advance.</p>