Morphy against Löwenthal, London 1859 — the second of three casual games, an Evans Gambit. Notes by Löwenthal.
9…Ne5We regard this move as forming an untenable line of defence, because in order to avoid the loss of a Pawn, it necessitates Black's subsequently moving P. to K. B's 3rd, as will appear presently.
11…Qe7After this, Black must either lose a Pawn, or move his King, both of which disasters he could have prevented only by playing the very disadvantageous move of 11. P. to K. B's 3rd.
12.Bb5+White's correct mode of pursuing the attack, as will be seen from its effects.
12…Bd7This move costs Black a Pawn, but to have moved the King would have been at least equally objectionable.
14…f5On examination, it will be found that Black had no better move, for had the Queen been permitted to take the K. Kt's P., Black's game would have been irretrievable.
15…Ke8Perhaps better to have moved K. to Q's sq., so as to have allowed the bringing of the K. R. to K's sq. presently.
20.Rad1To have taken B's P. with B. would evidently have been bad play, as Black, in reply, would have captured K's P. with Q.
23.Rfc1Threatening to take Q. Kt's P. with Q's R., and if the P. retake, to take again with Kt. (ch.), and mate on the move following with R. to B's 8th.
25.Nxb6+Beautifully played; whether Black capture the Kt. or not, White's game is won. Suppose, instead of taking Kt., Black play K. to K's 2nd, White then moves R. to Q. B's 7th (ch.), and follows with Kt. to Q's 7th (ch.), and afterwards takes the Queen, checking, and of course wins easily.
26.Rc7+Remarkably fine play, evincing the depth and accuracy of White's calculation upon his previous move with the Kt.
26…Kd8If K. take R., White forces mate in three moves — a little exercise which we will leave for the student's amusement.
29.Ra7This move still further illustrates the depth of Mr. Morphy's combination. Black has a piece more, but White, by means of thus threatening mate on the move, remains with a won position.
J. Löwenthal, Morphy's Games of Chess (1860) · Public domain · source