in my opinion the best move was between Fro Trommsdorf and Emil Joseph Deimer, Fro played b3 which is a stunning move becasue if you took his queen then the a pawn will be captured and there is no way to stop that pawn promoting and you can try escaping but Re2 forces you back and a1=R#, if you took with the c pawn then Nb3 axb3 Rc3++ Kb1 and the knight will come in with the bishop and it is forced mate.If you take the night prior then Re2#. This move has so many lines to it and actually in the game Fro had 3 brillincies and Emil had 1. Incredible game you should analyze it
morphy's Q-sac to mate with 2 knights.