In 1946 the U.S. Open was held in Pittsburgh.  The organizer, Bill Byland, was
one of the legends of Pittsburgh chess; I could write an article or two about
him, but I'll have to save that for later.  The following attractive game is
from that tournament.  At the time it was played, Larry Evans was a teenager,
but only a few years away from being U.S. Champion and a Grandmaster.  Anthony
Santasiere was an experienced master, winner of the 1945 U.S. Open and other
tournaments.

White: Larry Evans
Black: Anthony Santasiere
U.S. Open, Pittsburgh, 1946
Vienna Opening (ECO C27)

1.e4 e5 2.Nc3 Nf6 3.Bc4

This is the insane line, compared with 3.f4.  Weaver Adams played a part in
reviving this variation in the 1940's.

3....Nxe4!?

Of course, 3....Nc6 is OK.

4.Qh5

4.Nxe4 d5 and 4.Bxf7+ Kxf7 5.Nxe4 d5 are just inferior.

4....Nd6 5.Bb3

5.Qxe5+ Qe7 leads to an even endgame.

5....Nc6

5....Be7 6.Qxe5 (or 6.Nf3) might be defendable for Black.  With the text move
there's no turning back:  he is sacrificing what looks like a whole rook.

6.Nb5 g6 7.Qf3 f5 8.Qd5 Qe7 9.Nxc7+ Kd8 10.Nxa8 b6

This position is the start of theory for this line.  Of course, the knight is
trapped, and Black can usually expect to get it for his rook, but even that
much can't be taken for granted in this amazing variation.  One way for
White to keep from getting pushed off the board is to grab a little territory
on, of all places, the h-file:  11.d3 Bb7 12.h4!? (threatening 13.Bg5) f4
13.Qf3 Nd4 14.Qg4, for example.

11.Qf3 Bb7 12.d3 Nd4 13.Qh3 f4 14.c3

White can omit this and prepare to castle immediately.  14.Nxb6 axb6 15.f3 h5
would transpose to Kaidanov-Bareev, 1987, which continued 16.Bd2 Bg7
17.O-O-O N6f5 18.Re1.

14....N4f5 15.Ne2?!

15.Nxb6 axb6 16.f3 e4!? is one of the wilder lines; or 16.Bd2 h5 17.O-O-O g5
18.f3 Bg7 19.Ne2, and now Black can take the draw by 19....g4 20.hxg4 hxg4
21.Qxg4 Rh4 22.Qg6 Rh6.  Now or on the next move White is losing the thread.

15....g5 16.Rf1 h5 17.g4

Necessary to prevent 17 ... g4.

17....Qg7! 18.f3

Again not 18.gxf5 g4 19.Qh4+ Be7.

18....hxg4 19.Qxg4 Rxh2 20.Nxb6 axb6 21.Qg1 Rxe2+
22.Kxe2 Ng3+ 23.Ke1 Nxf1 24.Qxf1 Qh6 25.Bd1 Nf5
26.b4 Be7 27.a4 g4

The beginning of a well-calculated combination.

28.fxg4 Qh2 29.Qe2 Qg3+ 30.Qf2

If 30.Kd2 (or 30.Kf1) f3.

30....Qxd3 31.gxf5 Qxc3+ 32.Bd2 Qxa1
33.Qxb6+ Kc8

Material is even; but Black saw at his 27th move that he would still be
winning here.

34.f6 Bf8 35.b5 Qa3 36.Qf2 Bc5 37.Qh2 Qg3+!
38.Qxg3 fxg3 39.f7 g2 40.Be3

Cute!  But White still loses even after queening with check.

40....Bxe3 41.f8=Q+ Kc7 42.a5 g1=Q+ 43.Ke2 Bd4
44.b6 Bxb6 45.axb6 Qxb6 46.Qf5 Qd4 47.Bc2 Ba6+
48.Ke1 Qe3+ 49.Kd1 Be2+  0-1