1.e4
c5
2.Nf3
d6
3.d4
cxd4
4.Nxd4
Nf6
5.Nc3
a6
6.Be3
e6
7.f3
b5
8.Qd2
Nbd7
9.g4
h6
10.0-0-0
Ne5
10...Bb7 is more popular.
11.Qe1
Played after a long thought from Carlsen, this move appears to be a novelty.
11...Qc7
12.h4
b4
13.Nce2
Nc4
14.Nf4
Nxe3
15.Qxe3
Qb6
It would be too soon for Black's bishop to leave the c8-h3 diagonal. On 15...Bb7, White might already consider the thematic sacrifice 16.Ndxe6! with a strong attack. It should also be mentioned that 15...e5 would not win a piece, due to 16.Nd5 Nxd5 17.exd5 and Black cannot meet the positional threats of Nd4-c6 and f3-f4. After 15... Qb6, the threat of e6-e5 is real, as can be seen on the note to White's next move.
16.Bc4
Intending to meet 16...e5 with the powerful 17.Bxf7+! The point behind Ponomariov's last move would have been illustrated after, for example: 16.Kb1?! e5! 17.Nd5 Nxd5 18.exd5 Be7 19.Nf5 Qxe3 20.Nxe3 Bd8! when Black has a good position.
16...Qc5?
This move is certainly a mistake, since it adds strength to a future sacrifice on e6. If a white knight lands on that square, it will do so with the gain of tempo due to the position of the black queen.
17.Qb3!
White has a clear advantage since an upcoming sacrifice on e6 is now unavoidable.
17...d5
It could be that Black's best is 17...Ra7 when the rook provides at least some protection along the second rank, though the sacrifice of any of white's minor pieces would have been very strong.
18.exd5
Bd6
19.Nfxe6
fxe6
20.dxe6
Be7
21.Qd3
0-0
22.Bb3?
This move came as quite a shock to the computer-armed spectators who were kibitzing on playchess. com. Either 22.g5! or 22.Qg6! would have been winning for White.
22...Rd8??
After 22...Bb7! Ponomariov could have kept himself in the game, though White would still enjoy the better chances.
23.g5
Nh7
24.gxh6
Qh5
25.Qe4
Qxh6+
26.Kb1
Ra7
27.Nf5
Rxd1+
28.Rxd1
Qf6
29.Rd7
Bxd7
30.exd7+
Kf8
31.Qd5
1-0