The Midland Championship used to be decided by a knockout known as the Forrest Cup.
1.e4
e6
2.d4
d5
3.Nc3
Nf6
4.Bg5
Bb4
5.e5
h6
6.Bd2
Bxc3
7.bxc3
Ne4
8.Qg4
g6
9.Bd3
Nxd2
10.Kxd2
c5
11.Qf4
cxd4
12.cxd4
Qa5+
13.c3
Nd7
14.h4
b6
This was a line advocated by the late Tony Sutton who wrote theorectical articles about it in Correspondence Chess.
15.Rh3
Qa3
16.Bc2
Ba6
17.Rf3
Rh7
18.Qe3
0-0-0
19.Ne2
Nb8
20.Nc1
Nc6
21.Rb1
Na5
22.Ke1
Qe7
23.h5
Nc4
24.Qe2
Rg7
25.hxg6
fxg6
26.Rf6
Rf8
27.Rxf8+
Qxf8
28.Qg4
Kd7
29.Ba4+
Ke7
30.Qh4+
g5
31.Qxh6
Qf7
32.Ne2
Rg6
33.Qh8
[33.Qh5
]
33...Rg8
34.Qh6
Qf5
35.Rc1
[35.Bc2
Qxc2
36.Qf6+
Kd7
37.Qf7+
Kc6
38.Qxe6+
Kc7
39.Qf7+=
]
35...Rf8
36.f3
Ne3
37.Qg7+
Rf7
38.Qg8
Nxg2+
39.Kf2
Qxf3+
40.Kg1
Qf2+
41.Kh1
b5
42.Qxg5+
Kd7
43.Bc2
Ne1
44.Qg3
Qxe2
45.Qxe1
Qf3+
46.Kh2
Rg7
0-1