What about the 2015 Go games between AlphaGo and Lee Sedol?
https://en.m.wikipedia.org/wiki/AlphaGo_versus_Lee_Sedol
"Many top Go players characterized AlphaGo's unorthodox plays as seemingly-questionable moves that initially befuddled onlookers, but made sense in hindsight:[72] "All but the very best Go players craft their style by imitating top players. AlphaGo seems to have totally original moves it creates itself."[68]"