Earlier quoted context omitted.
> Most likely it has seen a similar sequence of moves in its training set. Is this a joke making fun of the common way people dismiss other ChatGPT successes? This makes no sense with respect to chess, because every game is unique, and playing a move from a different game in a new game is nonsensical.
1850 ELO player and also chess AI programmer here. This is an oversimplification at best. Many many games follow the same moves(1 move = 2 plies) for a long time, up to 30 moves in some cases, 20 moves is downright common and 10 moves is more common than not. These series of moves are referred to as opening theory and are described at copious length in tons of books. This is because while the raw number of possible p…
EDIT: I checked and it left the lichess database after 9 moves. The lichess db has probably 5 orders of magnitude more chess games in it than chatGPT has in its training data.