In this position, if black’s one remaining piece always moves between F3 and G4, then white has no choice but to keep forming this position, to stop black winning. I can see no way for white to avoid that. For black, making any other move seems to result in a forced win for white (and that is what happened in this game). So I’m under the impression that with perfect play from both sides, this position will keep repeating and the game is therefore drawn. Am I wrong?