Trained by AI

You probably know, AlphaGo, the 2016 AI program that dominated the game of Go.
Soon after, a software implementation called Leela was made available, to train human Go players.
Data from 750k Go moves from 1,200+ players between 2015-2019 shows a significant improvement in move quality – especially among younger players (see chart) who are likely more open to learn from Leela.
Source: State of AI report (an excellent slide deck!).