Could someone explain this graph ( from Google Deep Mind - Alphazero article) : r/deepmind

AI Reveals New Possibilities in Matrix Multiplication

DeepMind have taken a step closer to a true AGI, by releasing Gato

The Evolution of AlphaGo to MuZero, by Connor Shorten

What future for the AI behind Google DeepMind's AlphaGo?

Acquisition of chess knowledge in AlphaZero

A general reinforcement learning algorithm that masters chess

Breaking Down DeepMind's AlphaTensor, by Adrienne Kline

PDF) Acquisition of chess knowledge in AlphaZero

Mastering Stratego, the classic game of imperfect information

PDF) Overview on DeepMind and Its AlphaGo Zero AI