Just a ridiculous forced mate.
Carlsen vs H Harestad, 2003
(C98) Ruy Lopez, Closed, Chigorin, 38 moves, 1-0
One of the wildest games I have ever seen. Thanks, chessgames!
Schlechter vs Herzfeld, 1893
(C29) Vienna Gambit, 30 moves, 1-0
I don't know where to begin. Just look at this.
T Hillarp Persson vs Azmaiparashvili, 2003
(B07) Pirc, 23 moves, 0-1
One black queen, one move, one square, 0-1.
R Byrne vs Fischer, 1963
(E60) King's Indian Defense, 21 moves, 0-1
Running out of descriptions. If you haven't seen, look.
S Levitsky vs Marshall, 1912
(B23) Sicilian, Closed, 23 moves, 0-1
The moves crescendo into a culmination of...movement.
E Terpugov vs Petrosian, 1957
(A46) Queen's Pawn Game, 27 moves, 0-1
Such a deep combination.
Tarrasch vs Romberg, 1893
(000) Chess variants, 21 moves, 1-0
Vasiukov vs Alburt, 1972
(A07) King's Indian Attack, 19 moves, 1-0
This is an amazing combination. That's all I'll say.
Lokvenc vs O Trinks, 1925
(A15) English, 31 moves, 1-0
If you can analyze this game, you might have a problem.
C van de Loo vs M Hesseling, 1983
(C57) Two Knights, 48 moves, 1-0