1.d4 d5 2.c4 e6 3.Nc3 Bb4 4.Bd2 Nf6 5.Nf3 Nbd7 6.a3 Bxc3 7.Bxc3 dxc4 8.e3 b5
In the Queen's Gambit, Black should usually prefer to develop his pieces and castle over attempting to hold the gambited pawn.
9.a4
Ba6
The Bishop belongs on b7, where it eyes the White King, and more importantly, influences the center.
9...c6
10.axb5
cxb5
11.b3
Black cannot hold the gambited pawn.
10.axb5
Bxb5
11.Ra5
This is a one-move threat which does nothing to help White develop his pieces and castle.
11...a6
12.b3
Ne4
This is also a one-move threat which does not help Black to castle.
13.Qc2
Nxc3
14.Qxc3
cxb3
15.Bxb5
axb5
16.0-0
Good! Now White's king will be safe from any collateral damage resulting from the activity on the Queenside.
16...c6
17.Rxa8
Qxa8
18.Qb4
Good idea. White is trying to forestall Black from castling. With Black's King in the center, his Rook is out of the game, and his King is easier to harass.
18...Qa4
19.Qd6
b2
20.Qxc6
20.Nd2
After 21.Nb1 the b-pawn won't Queen and Black still isn't castled.
20...0-0
21.Qxd7
Qa1
22.Nd2
22.Qxb5
Prevents Black from queening the b-pawn.
22...Qc1
23.Qxb5
23.Nb1
Saves the Knight and prevents the pawn from queening.
23...Qxd2
24.Rb1
Qc1+
24...Rc8
A tactic. Now White cannot take the b-pawn due to his back-rank weakness. But
if he doesn't take it, the pawn will Queen. White is lost here.
25.Qf1
Qxf1+
26.Kxf1
Rb8
27.Ke2
Kf8
28.Kd2
Ke7
29.Kc2
Kd6
30.Rxb2
Rxb2+
30...Rc8+
This endgame should be a draw. Life Master Eric Fischvogt says, "All Rook
Endgames are Drawn(!)" With the Rooks off of the board, Black lost the ability
to harass the White King by checking it from a distance. The game is now lost
for Black, although White still must show his ability to win from here.
31.Kxb2
Kd5
32.f3
f5
33.Kc3
g5
34.Kd3
h6
35.e4+
fxe4+
36.fxe4+
Kd6
37.Ke3
Ke7
38.e5
h5
39.h4
g4
40.Kf4
Kf7
41.Kg5
g3
42.Kxh5
Kg7
43.Kg5
Kh7
44.Kg4
Kg6
45.Kxg3
Kf5
46.Kf3
Kg6
47.g4
Kh6
48.Kf4
Kg6
49.h5+
Kh6
50.Ke4
Kg5
51.d5
exd5+
52.Kxd5
Kxg4
53.h6
Kf4
54.h7
Ke3
55.h8R
Kd3
56.Rh4
Ke3
57.e6
Kf3
58.Ke5
Kg3
59.Ra4
Kf3
60.e7
Ke3
61.Ra3+
Kd2
62.Ke4
Kc2
63.Kd4
Kb2
64.Rh3
Kc2
65.e8R
Kb2
66.Re2+
Black resigned.
1-0