1.e4
c5
2.Nf3
d6
3.d4
cxd4
4.Nxd4
Nf6
5.Nc3
Nc6
6.Bg5
e6
7.Qd2
Be7
8.0-0-0
a6
9.f4
Bd7
10.Nf3
b5
11.Bxf6
gxf6
12.Kb1
Qb6
13.Ne2
0-0-0
14.f5
Kb8
15.Nf4
Bc8
16.Qe1
Rhe8
17.fxe6
fxe6
18.g3
Bf8
19.Bh3
Bg7
20.Rf1
Bh8
21.c3
Re7
22.Rf2
Na5
23.Nd4
Rde8
24.Bg4
Nc4
25.Bh5
Rg8
26.Be2
Ne5
27.Bf1
Rge8
28.Rfd2
Bb7
29.a3
Qc7
30.Ka1
Bg7
31.Be2
Nc4
32.Bxc4
Qxc4
33.Nc2
Qxe4
34.Re2
Qc4
35.Rxd6
e5
36.Nh5
Qc7
37.Red2
f5
38.Nxg7
Rxg7
Diagram Black's king is exposed, and there are many black pawn weaknesses, notably the a6-pawn.
39.Nb4
Targeting the a-pawn
39...a5
[39...Ka7
40.Qf2++-
]
40.Rc6
Bxc6 Na6 wins the queen, and that may be black's best try!
40...Qf7
41.Na6+
Bxa6
[41...Ka8
42.Nc7++-
; 41...Ka7
42.Qe3+
Ka8
43.Nc7++-
]
42.Rxa6
Black's king is laid bare. White threatens the a-pawn as well as Qd1 and Rd5
42...Qb7
Attacking the Ra6 and guarding the d5 entry square
43.Rxa5
[43.Rdd6
Rg6!
44.Rxg6
hxg6
45.Rxg6
b4
46.cxb4
axb4
47.Qxb4+-
; 43.Rad6
This is the move I expected, with Qd1 to follow]
43...Qb6
44.b4
Right from Nimzovich. Identify the weakness (the b5-pawn), fix it (by playing b4), attack it with your pieces (Ra5 and soon the queen), and then and only then, attack the weakness with a pawn (a3-a4)
44...Qc6
45.Kb2
Rc7
46.Rc2
e4
47.Qf1!
The second attack on b5
47...Re5
48.a4
Nimzovitch wins again! 1-0