1.c4
Nc6
2.g3
e5
3.Bg2
f5
4.d3
Nf6
5.Nc3
Bb4
6.Bd2
0-0
7.e3
Bxc3
8.Bxc3
f4!?
Very sharp. 8...d6
is less ambitious and somewhat safer here.
9.gxf4
exf4
10.e4
d6
11.Qb3
Ng4
12.Nf3
Nce5
13.Bxe5
Nxe5
14.d4
Nxf3+
15.Bxf3
c5
16.0-0-0
Qc7
17.Qc3
cxd4
18.Qxd4
Be6
19.b3
Rfd8
20.Kb2
a5
21.Rhg1
a4
22.Bg4
Bxg4
23.Rxg4
axb3
24.axb3
f3
24...Kh8
gets Black's King off of the d5-g8 diagonal, making 25...b5 a realistic idea.
This should hold the balance for Black.
25.Rg5
b6?
26.Rd5
White piles up on the weak pawn at d6, but this should give Black just enough counterplay to draw.
26.Rdg1!
Ra7
(26...Rd7??
27.Qd5++-
picks up the Rook in the corner.) 27.Rxg7+
Qxg7
28.Rxg7+
Rxg7
29.e5!+-
26...Qa7!
27.Kc2!
Good defensive technique. Since Black is coming in "head first" on the a-file (that is, with the Queen -- his most valuable piece -- first in line), White clears the b2 square for his own Queen to interpose. In the endgame, each side will have five pawns -- but Black's d- and f-pawns are quite vulnerable, whereas only White's e-pawn is likely to drop off. So White can look forward to the endgame with some confidence.
27...Qa2+
28.Qb2
Rdc8?!
Trading Queens is not such a great idea here for Black. The important thing is to keep Queens on and play consistently to exploit White's exposed King.
28...Qa7
sets up the idea 29.Rxd6
Rxd6
30.Rxd6
b5!
and with the attack on the pawn at f7, it is hard to see how White's King is
going to find lasting shelter.
29.R1d4
29.Rxd6
is playable too, since 29...Rxc4+
fails to 30.bxc4
Qxc4+
31.Kb1!
Qxe4+
32.R6d3+-
and Black cannot continue the attack.
29...Qa1
The coming endgame is unfavorable to Black, so he should have retained Queens.
29...Qa7
with the idea of 31...b5 still looks like a reasonable try.
30.Qxa1!
This is the right moment to enter a Rook ending.
30...Rxa1
31.Kd2
Rb1
32.Rb5
Rf8
33.Kc2
Ra1
Black has reinforced and "spring loaded" his f-pawn by putting a Rook behind it.
34.Rd2
White rightly judges that he cannot afford to let Black win the pawn on f2 or Black's own f-pawn will be too dangerous.
34...Ra6
35.Kd3
Rf6
36.Ke3
Kf7
37.h4
Ke7
38.e5
dxe5
39.Rxe5+
Re6
40.Rxe6+
Kxe6
41.Rd5
Ra3
42.Rb5
Ra6
43.Kxf3
White has won a pawn, and there are pawns on both sides of the board. This is an ideal endgame in which to press for a win.
43...Kd6
44.h5
Kc6
45.Kg4
Ra2
46.f4
Rg2+
47.Kf5
g6+
48.Kf6
gxh5
49.Rxh5
Rg3
50.Rb5
h5
51.Rxh5
Rxb3
52.f5
Rb4
53.Rh4
Kd7
54.Rd4+
Kc7
54...Ke8
55.Kg7
Rb1
56.Rg4
wins easily, e.g. 56...Rd1
57.f6
Rf1
58.Re4+
Kd7
59.f7
Rg1+
60.Kf6
Rf1+
61.Kg6
Rg1+
(61...Kd6
62.Re8
Rg1+
63.Kh5
and White's King walks back down the h- and g-files until Black's Rook runs out of safe checks, at which point White queens the f-pawn.) 62.Kf5
Rf1+
63.Rf4
This position is like a Lucena Bridge, but with two differences. First, Black's King is closer to White's f-pawn, so Black will win that pawn. Second, there is a pair of pawns on the queenside -- and that factor is decisive. 63...Rxf4+
64.Kxf4
Ke7
65.Ke5
Kxf7
66.Kd6
Ke8
67.Kc6
Kd8
68.Kxb6
Kc8
69.Kc6
Kb8
70.Kd7
and White wins trivially by marching the c-pawn home to queen.
55.Ke5
b5
Everything else loses here too, so we shouldn't be too hard on Black. But the harsh truth is that this move gives White a foolproof win.
56.cxb5
Simplest. With Black's King cut off, the win is trivial.
56...Rxb5+
56...Rxd4
57.Kxd4+-
leaves Black's King helpless to stop the widely separated passed pawns.
57.Ke6
White goes straight forward rather than to f6 because he wants to leave the square in front of the pawn free. That way, the pawn can advance more rapidly.
57...Rb1
With his King cut off by two files, Black is hopelessly lost. (In fact, one file would be enough -- but it is simpler for White to keep him cut off by two.)
58.f6
Re1+
59.Kf7
The King must dodge in front of the pawn, but he now threatens Kf8 and f7 after which White will win with the standard maneuver in the Lucena position. Because of the two-file cutoff, White can also win with 59.Kf5 Rf1+ 60.Rf4 After the exchange of Rooks, White's King comes around on the g-file: 60...Rxf4+ 61.Kxf4 Kd7 62.Kg5 Ke8 63.Kg6 Kf8 64.f7 etc.
62...Rf1
would let White show his technique. Since the Black King is already cut off by two files and White's Rook is already on his own fourth rank, White can dispense with the preliminary check and simply bring his King, in a zig-zagging line designed to keep his pawn defended, up to f5: 63.Ke7
Re1+
64.Kf6
Rf1+
65.Ke6!
Re1+
66.Kf5
Rf1+
67.Rf4+-
63.Ke7
Black must give up his Rook for the pawn.
1-0