Played on board 12
1.e4
c5
2.Nf3
Nf6
3.d3
d5
4.Nbd2
Nc6
5.g3
e6
6.Bg2
Be7
7.0-0
0-0
8.Re1
b5
9.e5
Nd7
[ The alternative was: - 9...Ne8
10.Nf1
b4
11.h4
a5
12.N1h2
a4
13.Bf4
a3
14.b3
Nc7
15.Ng4
Nb5
16.Bg5!
Bd7
17.Bxe7
Qxe7
18.h5
Rfd8
19.h6
g6
20.Qd2
]
10.Nf1
b4
11.h4
a5
12.Bf4
a4
13.h5
[ 13.a3
had been played by Fischer v Mjagmasuren in round 3 of the Sousse Interzonal 1967, and,in a later round - Gheorgiu v Uhlmann, with White winning massively. In this game Black takes too much time preparing his queenside play, allowing White ample time to tie down the defence of the e6 square.]
13...a3
14.b3
Ba6
15.h6
g6
16.N1h2
Na7
17.Ng4
Nb5
18.Qd2
Rc8
[ Better 18...Nc3
in order to tie the QR to the defence of the a-pawn]
19.Ng5
Qc7
20.Rac1
Rfd8
21.Nf6+
Bxf6?
[ 21...Nxf6
22.exf6
Bd6
23.Bxd6
Qxd6
24.f4
]
22.exf6
Qa7
23.Be5
Nxe5
24.Rxe5
Nc3
25.Bh3
Rc6
26.Qf4
Bc8
27.Rce1
Rdd6
28.Bf5!!
gxf5
[ Black cannot ignore the bishop e.g. 28...Nxa2
29.Bxg6
hxg6
30.h7+
Kh8
31.Qh4
Rd8
32.Qh6
Rg8
33.hxg8Q+
Kxg8
34.Qg7#
]
29.Qxf5
Kf8
30.Qxh7
Ke8
31.Qg8+
Black will lose, at least, his Queen! 1-0