Paul Morphy against his uncle Ernest Morphy, New Orleans 1856 — a Ruy Lopez Knight's Game. The opening follows Löwenthal's own match game with Harrwitz, and Morphy crowns it with an ingenious sacrifice. Notes by Löwenthal.

1. 3…Bc5 We have elsewhere noticed the fact of this move being far from advisable for the defence, as it allows the first player to establish his Pawns in the centre, and gain a powerful attack.
2. 6…Bb6 Taking P. with P. would be bad play, because of White's reply, of P. to K's 5th, which would cramp Black's pieces still more.
3. 7.Bg5 The correct move, obtaining an overwhelming attack.
4. 8…gxf6 Taking the Bishop with Queen, instead, would involve the loss of a clear Pawn at least.
5. 10.Nh4 The moves in this game, up to the present point, coincide exactly with those which occurred in the third game of the match between the Editor and Herr Harrwitz, see 'Chess Player's Chronicle,' vol. i. (new series), p. 332, where the former had the attack.
6. 15.Qd3 An ingenious sacrifice, which brings the game to a sweetly and successful conclusion.
7. 17…Qg7 Q. to K's sq., or R. to B's 2nd would obviously have cost a mate; but B. to Q's 5th would have been a better move than the one chosen.