1.Nf3
Nf6
2.g3
g6
3.Bg2
Bg7
4.d4
d6
5.c4
0-0
6.0-0
Nc6
7.d5
Na5
8.Nfd2
c5
9.Nc3
a6
10.Qc2
Rb8
11.Rb1
Bd7
12.b3
b5
13.Bb2
e5
14.dxe6
Bxe6
[ 14...fxe6
15.Nce4
Nxe4
16.Bxg7
Nxd2
17.Bxf8
Nxb1
18.Bxd6
Na3
19.Qc1
Winning. Korchnoy v Ciocaltae, Hamburg, 1965]
15.cxb5
axb5
16.Nde4
Nxe4
17.Nxe4
f5?
[ 17...Bxb2!
]
18.Bxg7
Kxg7
19.Qc3+
Kg8
20.Nxd6
Nxb3
[ 20...b4
21.Qe5!
]
21.Nxf5
[ If 21.Qe5
then 21...Nd4!
]
21...Bxf5
22.Rxb3
Be6
23.Rb2
Qb6
24.Rd2
b4
25.Qe5
Rbd8
[ 25...Rf5!
]
26.Rfd1
Rxd2
27.Rxd2
c4
28.e3
Bf7
29.Rd6
Qa7
30.Bd5!
Qxa2?
[ The queen is out of play here. Better 30...c3
]
31.Bxf7+!
This forces mate!
31...Rxf7
32.Rd8+
Rf8
33.Qe6+
Kg7
34.Rd7+
Kh6
35.Qh3+
Kg5
36.Qh4+
Kf5
37.Qf4+
[ 37.e4+
Ke5
38.Qe7#
]
37...Ke6
38.Qd6+
With mate in 5 to follow 1-0