Statistics et al.: AlphaZero, Stockfish, and flexibility regarding chess variants.

Is any human capable of beating AlphaZero in chess or go? - Quora

One Giant Step for a Chess-Playing Machine - The New York Times

Towards Explainable AI for Chess - by Nate Solon

Google's AlphaZero Destroys Stockfish In 100-Game Match

AlphaZero: The genesis of machine intuition

Alpha Zero Teaches Itself Chess 4 Hours, Then Beats Dad

AlphaZero and the French Defense

Revolutionize Your Chess with Artificial Intelligence (AI)

AlphaZero: Shedding new light on chess, shogi, and Go - Google DeepMind

DeepMind Achieves Holy Grail: An AI That Can Master Games Like Chess and Go Without Human Help - IEEE Spectrum