1.Nf3
c5
2.c4
Nc6
3.d4
cxd4
4.Nxd4
g6
5.e4
Bg7
6.Be3
Nf6
7.Nc3
Ng4
8.Qxg4
Nxd4
9.Qd1
Ne6
10.Rc1
Qa5
11.Qd2
b6
12.Qd5
This continuation is known to be harmless. Black rarely faces a problem in this line if queens are exchanged.
12...Rb8
13.Qxa5
bxa5
14.b3
Bd4
15.Bxd4
Nxd4
At this point I already thought I was slightly better. The doubled a-pawns are not a problem because they can never be attacked. But in the long run they give black dynamic potential based on a5-a4 breaks and attacking the weak b3 pawn along the half-open b-file. Black's minor pieces will also be better than white's. White may get a temporary initiative based on his slight development lead, but this is insignificant compared to his long term strategic problems.
16.Bd3
Bb7
Not [ 16...d6
17.c5
dxc5
18.Na4
which would allow white to make use of his development lead.]
17.0-0
0-0
18.e5
Rfd8
19.Rfe1
Kf8
20.Kf1
I don't see the point of this move, but it's quite difficult for white to come up with an active plan, whereas black's position plays itself.
20...Ne6
21.Rcd1
Here [ 21.Be4
offers better chances for a draw, as it allows white to swap off his bad bishop. But white would still have a difficult defense ahead.]
21...Nc5
22.Bc2
Bc6
23.Nd5
Rdc8
24.Re3
a4
25.Rh3
axb3
A slight inaccuracy. There was no need to relieve the tension quite yet. This gives white the a-file to work with, but that does not change the assessment of the position.
26.axb3
h5
27.Ra1
a6
28.Bd1
Bxd5
29.cxd5
d6
30.exd6
exd6-/+
I have gradually improved by position since reaching the initial endgame, and now I have both the advantage of the good knight vs. bad bishop and white's weak pawns on b3 and d5 to work with. Not wishing to be passively defend, my opponent makes a rash decision to give up a pawn and force exchanges. But this only makes matters worse.
31.g4?!
hxg4
32.Rh8+
Ke7
33.Rxc8
Rxc8
34.b4
Nd3
35.Rxa6
Rc1
36.Ke2
Nxb4
37.Ra7+
Kf6
38.Rd7
Nxd5
39.Kd2
Rc4
40.Rxd6+
Ke5
41.Rxd5+?
This loses quickly, but even after the relatively better [ 41.Rd7
Rd4+
42.Ke1
f5
, white is doomed to lose the endgame.]
41...Kxd5
42.Bb3
Kd4
43.Bxc4
Kxc4
44.Ke3
f5
45.Kf4
Kd3
[ 45...Kd3
46.Kg5
Ke2
47.Kxg6
f4
48.Kg5
f3
49.Kxg4
Kxf2-+
] 0-1