(1) Ter Sahakyan,S (2575) - Potkin,V (2653) [B48]
12th ch-EUR Aix-les-Bains FRA (4), 25.03.2011

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3 a6 7.Qd2 Nf6 8.0-0-0 Bb4 9.f3 Ne5 10.Nb3 b5 11.Qe1 Be7 12.f4 Ng6 13.e5 Ng4 14.Ne4 Nxe3
[14...0-0 is the most popular continuation here.]

15.Qxe3 0-0 16.h4 Bb7 17.h5
[White got a good game after 17.Nd6 Nxh4 18.Nxb7 Qxb7 19.Bd3 f5 20.exf6 Bxf6 21.g4 Be7 22.Be4 Qa7 23.Qd3 Rac8 24.Qxd7 Qxd7 25.Rxd7 Bd8 26.Bb7 Rc4 27.Nd4 1-0 (27) Mamedov,N (2580)-Geller,J (2544)/Moscow 2011/Mega2011 Update 08]

17...Rac8 18.Bd3

More or less forced, but Black will have good compensation with his strong pawn center and bishop pair. [After 18...Nh4? White gains a lot of tempi to build up a quick attack. 19.Qf2 Nf5 20.h6! and if 20...g6 21.g4! is tough to meet. 21...Nh4 22.Rxh4 Bxh4 23.Qxh4+- ]

19.fxe5 Qxe5 20.Nbd2 f5 21.Nf3 Qc7 22.Neg5 Bd5 23.Nh4 Qc5 24.Qd2
[24.Qxc5 loses to the zwischenzug 24...Bxg5+ ]

24...Bf6 25.a3
White's days are numbered, and Potkin makes sure it's the fewest possible.

25...b4! 26.axb4 Qd4 27.c3 Bxg5 28.Qxg5

28...Rxc3+!! 29.Bc2
[29.bxc3 Qxc3+ 30.Bc2 Be4 31.Rd2 Qa1+ ]

29...Rxc2+! 30.Kxc2 Rc8+ 31.Kb1 Be4+ 32.Ka1 Qxb4 33.Qe3 Rc5 34.Rd3 Rb5 0-1