Artificial Intelligence And Chess

It's no secret that artificial intelligence now plays a big role in Chess. Chess engines, such as LeelaZero and AlphaZero took the world by storm and now pose danger to the world's best -- Stockfish. The Question is: When and how did the AI become so strong? In the Garry Kasparov era, humans were dominating the Chess world. Karpov, Kasparov, Ivanchuk, Gelfand…They were all at the top of the mountain.