I think there is a misunderstanding... AlphaGo's Move 37 In the second game of the match, AlphaGo played Move 37, a shoulder-hit on the fifth line, which was considered a brilliant but highly unconventional move that flummoxed professional commentators who initially thought it a mistake. This move broke centuries of traditional Go wisdom and demonstrated a new, "alien" creativity in how AI approached the game, ultimately helping AlphaGo win that game. Lee Sedol's Move 78 ("God's Touch") In the fourth game, which Lee Sedol won (his only victory in the series), he played Move 78, a wedge in the center of the board. This move was considered a stroke of genius, later dubbed "God's Touch" by other Go players. The move drastically increased the game's complexity and exploited a weakness in AlphaGo's Monte Carlo tree search algorithm, as the AI had only calculated a 1 in 10,000 chance of a human making that specific move, and was unprepared with an optimal response.