If you're a chess nerd, and/or an AI nerd, this might entertain you. https://www.chess.com/forum/view/chess-openings/novelty-discovered-in-the-berlin-defense#last_comment
I'm Dyslexic_Goat on chess.com. Yesterday, Stockfish 10 invented a 7th-move variation to the Berlin Defense, and I'm working on mapping the opening out on LiveBook a bit. Feel free to add thoughts, I'm all ears.