If a human had only ever seen Othello moves in notation form and never seen the board and had to infer the rules, they'd probably be about 99.99% accurate. They

If a human had only ever seen Othello moves in notation form and never seen the board and had to infer the rules, they'd probably be about 99.99% accurate. They might make a mistake about 1 move in 1000 - fail to spot something, or encounter some edge case of rules they hadn't been able to infer. That's how accurate GPT-2 was.