1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 Bd6 9.Nd2 This was new to me, and indeed, it has only been played once before in a position that has occurred at least 529 times! Despite the surprise, Aronian had no trouble and played very quickly through the whole game.
9...Bb7 10.Nce4N [10.0-0 0-0 11.Qf3 Qb8 12.Qh3 h6 13.b3 b4 14.Nce4 c5 15.Nxd6 Qxd6 16.Nc4 Qd5 17.Bb2 cxd4 18.Rad1 Nc5 19.Bb1 d3 20.Bxf6 gxf6 21.e4 Qg5 22.f4 Qg7 23.Nd6 Bxe4 24.Nxe4 Nxe4 25.Rxd3 f5 26.Re3 Nc3 27.Kh1 Qf6 28.g4 fxg4 29.Qxg4+ Kh8 30.Bd3 Rad8 31.Rh3 Rd5 32.f5 e5 33.Qxb4 Rc8 34.Bc4 Qc6 35.Bxd5 Qxd5+ 36.Rhf3 Ne2 37.Qh4 Kh7 38.f6 Nd4 39.Qh3 Rg8 40.b4 Rg6 41.a4 Rxf6 42.Kg2 Qe4 43.Qh5 Nxf3 44.Rxf3 Qe2+ 45.Kg3 Rg6+ 46.Kh3 Qg2+ 0-1 Volkov,S (2633)-Romanov,E (2547)/Dagomys 2008]
10...Be7 11.Nxf6+ Nxf6 12.0-0 0-0 13.Nb3 This is, no doubt, one of White's main ideas. He has stopped c5, both because the c-pawn would be attacked twice and only defended once, and because the b-pawn would hang as well. Yessirree, ...c5 has been stopped. It can't be played, no way, no how.
13...c5! Oh. If it's as easy as that, then 9.Nd2 won't be seen again at the big boy level.
14.dxc5 [14.Bxb5 doesn't look impressive after 14...Qd5 15.f3 c4 16.Nc5 Bxc5 17.dxc5 Qxc5 ]
14...Qd5 15.f3 Rfd8 16.Be2 Qe5 17.Qe1 [17.Qc2 Rac8 18.Bxb5 Bxc5 19.Qc3 Qh5! and the threat of ...Bd6, with a triple attack (xb5, xc3, xh2) has White in some trouble.]
17...Bd5 18.Qc3 [18.Bxb5 Bxb3 19.axb3 Bxc5 20.Bc4 Nd5 leaves Black with sufficient compensation for the nearly meaningless doubled b-pawn.]
18...Qxc3 19.bxc3 Bxb3 20.axb3 Nd5 Black regains the pawn at his leisure, and the game is headed for a draw.
21.b4 Nxc3 22.Kf2 a5 23.Rxa5 Rxa5 24.bxa5 Bxc5 25.Bb2 Nxe2 26.Kxe2 Bb4 27.Ra1 A funny but effective way to stay out of trouble - by "hanging" the bishop.
27...Rd2+ 28.Kf1 Rxb2 29.a6 Bc5 30.Rc1 The point.
30...g6 [30...Bf8 saves the bishop and stops the mate, but after 31.Ra1 the bishop must come back: 31...Bc5 32.Rc1 and we're back where we started.]
31.Rxc5 Ra2 32.Rxb5 Rxa6 1/2-1/2