The “Evergreen Game” — Anderssen–Dufresne, Berlin 1852 — a jewel of the Evans Gambit, played, as Lasker notes, “at a time when the analysis of the Evans gambit was not yet far advanced,” and long regarded as one of the finest combinations on record. From Emanuel Lasker's Common Sense in Chess (1896); his public-domain notes follow.
19.Rad1One of the most subtle and profound moves on record.
20…Nxe7If at move 20 Black continues with (20) ..., K - Q; (21) R x P ch., K - B; (22) R - Q 8 ch., Kt x R; (23) Q - Q 7 ch. and mates in two more moves.
21.Qxd7+Grand!
Emanuel Lasker, Common Sense in Chess (1896) · Public domain · source