Morphy against Löwenthal — the twelfth game of their 1858 London match (French Opening).
5…Be6Comparatively weak; bringing out the King's Bishop is much better.
8.Ne5Gaining a good position.
10.f4In Mr. Morphy's hands this move always seems productive of immediate advantage.
11…Ng4Taking the King's Pawn with the Knight would have availed nothing, as White would have played Kt. to R's 4th, attacking the Queen, and winning a piece.
20.Nc5Exceedingly well played, as will be seen from a study of the annexed diagram.
20…Rc7Had Black played Kt. to Q's 7th, White's answer would have been Q. to B's 4th, threatening to take the Q. R. P., with a menaced checkmate.
21.Qa4Mr. Morphy subsequently observed that taking the Knight with the Bishop, before playing this move, would have been much stronger, as then Black could not have advanced the Pawn to Q. Kt's 3rd.
22…bxc5If the Bishop had been captured, White might have replied with R. takes Q. Kt's P., a winning move.
24…Rd8A blunder, of which Mr. Morphy at once takes full advantage.
J. Löwenthal, Morphy's Games of Chess (1860) · Public domain · source