Game 47 in Philip W. Sergeant’s Morphy’s Games of Chess (1916), printed pages 100–101. Commentary from this edition; named earlier annotators remain credited in the notes. Seventh game of the 1858 Harrwitz match. The source says the time was not recorded.

1. 2.c4 Harrwitz clearly had no doubts as to the superiority of this over 2 P—K4, which is nowadays considered the better move of the two.
2. 8.Bxf6 Avoiding the variation which he got in the 5th game by castling at once.
3. 11.f4 The same weak move which he made in the 5th game. 11 P—K4 was far better here.
4. 14.Rae1 Forcing White either to play as he does or to compromise his K side still more by P—Kt3.
5. 21…Qf7 Anticipating 22 P—KKt4, which White indeed might still have played. At first sight the move looks good. Black could not then continue 22..Q×P, on account of 23 Q—B2. But he might play 22..P—KKt4, with a tremendous attack.
6. 25.Re2 J.L. suggests 25..P—KKt4; 26 P×P, Kt—K4ch; 27 K—Kt1, Kt×P (Kt6); 28 R—K1, Q—Kt2, with a strong game. The same variation is possible next move also.
7. 31.Re1 If B×R, Black mates in 6 with Q—R8ch, etc.
8. 39…Qb2 By his 38th move Black threatened Kt—K5. Now he threatens R—R8ch, followed by Kt—K5ch.
9. 41…Rf1+ A mistake which throws away a victory. Of course if 42 R×R, Kt—K5ch wins. But by 42 K×Kt White escapes (see next note). Black had a forced win by 41..R×R; 42 Q×R, Kt—K5ch; 43 K—Kt1, Kt—B6; 44 Q—Q3, P—Kt6; 45 Q×P, Q—B8ch; 46 Q—B1, Kt—K7ch.
10. 43…Qf6+ J.L. plausibly suggests that what Morphy overlooked on his 41st move was that after 43..K—Kt2; 44 R×R, Q—R7ch; 45 K—Kt5, Q—R3ch, he would no longer have the Rook to guard his KBP.