Comments by Sergey Zagrebelny. Round 3

Adams Michael (2728) – Solomon Kenny ( 2394 )

1.e4 c5 2.Nf3 Nc6 3.Bb5 e6 4.0–0 Nge7 5.c3 d5 6.exd5 Qxd5 7.Re1 a6 8.Ba4 b5 9.Bc2 Bb7 10.a4 b4 11.d4 Rd8 12.c4. This move pushes the powerful piece off the center, but its main goal is different.

12...Qh5 13.d5!? Aiming at the king! 13...exd5 14.Nbd2 dxc4 15.Qe2. Nobody counts pawns here! White carries out a direct attack on the e-file.
Na5 16.Ne4 Nb3 17.Bxb3 cxb3 18.Bg5

18...f6? Black could stay in the game longer by 18...Bxe4 19.Qxe4 Qg6 20.Qb7 f6.
19.Bxf6 Kf7 20.Ne5+ Black resigns.

Kamsky Gata (2705) - Morovic Fernandez Ivan (2580)

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 Ne7 5.a3 Bxc3+ 6.bxc3 b6 7.Qg4 Ng6 8.a4 8...Ba6 9.Bxa6 Nxa6. Black managed to swap his bad bishop, but spent a lot of time on that operation.

10.h4 h5 11.Qe2 Nb8 12.Bg5 Qd7 13.a5 Nc6 14.axb6 cxb6 15.Qf3 Nge7 16.Ne2

16...0–0–0?! This decision is unsuccessful. The king becomes a target on the queenside.
17.Nf4 g6 18.0–0 Kb7 19.Rfb1 Rb8 20.c4! White opens the game and creates the path for his queen.
20.Nxd4 21.Qa3 Nec6 22.c3 Nf5 23.cxd5 exd5

24.Rb5!+- The d5-pawn falls, and the game is secured for White. 24…Ka8 25.Nxd5 Na5 26.Qb4 Qc6 27.Nxb6+! Rxb6 28.Qxa5 Rb7 29.Rxb7 Qxb7 30.Bd8 Kb8

31.e6! The decisive riposte – White threatens check from e5.
31...Re8 32.Bc7+ Kc8 33.exf7 Rf8 34.Re1 Rxf7 35.Re8+ Kd7 36.Rd8+ Black resigns.

Cori Jorge (2496, Peru) - Tomashevsky Evgeny (2701, Russia 2)

1.d4 Nf6 2.Nf3 e6 3.e3 c5 4.Bd3 Nc6 5.0-0 d5 6.b3 Bd6 7.Bb2 0-0 8.a3 b6 9.Ne5 Bb7 10.Nd2 Rc8 11.f4. A well-known line. White tries to develop the initiative on the kingside, but weakens the e4-square.

11...Ne7 12.Qe2 Ne4 13.Nxe4 dxe4 14.Bc4 cxd4 15.exd4 Nf5

16.a4 Qe7 17.Ng4?! The knight goes for the е4-pawn, but this is too straightforward. 17.a5 is more consistent and better.
17...Rc7 18.g3?! This move drastically weakens the h1-a8 diagonal, which proved decisive.
18...Rfc8 19.c3 Rd8 20.Nf2 e3 21.Ng4

21...Rxc4! An excellent solution! The bishop is more useful here.
22.bxc4 After 22.Qxc4? Black gained the decisive advantage by 22...Ba8 23.Qa6 h5 24.Ne5 Bxe5 25.dxe5 (25.fxe5 Qg5!) 25...Qc5.
22...Ba8 23.Rad1 Qb7 24.d5 Bc5 25.Kg2? The only way to construct the defensive wall is 25.Ne5 exd5 26.Nf3, blocking Black's battery.
25...exd5 26.cxd5 Rxd5

27.Kh3 White is lost, and the rest is just a matter of technique.
27...Qc8 28.Rxd5 Bxd5 29.c4 Be6 30.Kg2 Nh4+ 31.gxh4 Bxg4 32.Qd3 Bh3+ 33.Kf3 Qg4+ White resigns.

Filippov Anton (2609 Uzbekistan) - Nguyen Ngoc (2633 Vietnam)

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.Nf3 Nc6 7.Be3 Be7 8.Qd2 0-0 9.g3 Rb8 10.Be2 b6 11.Nd1 f6 12.c3 b5 13.0-0 b4 14.exf6 Nxf6 15.Nf2 bxc3 16.bxc3 Qb6 17.Bd3 Bd7 18.Rab1 Qa5 19.Rxb8 Rxb8 20.Rb1 Rxb1+ 21.Bxb1 Qb6 22.Bc2 cxd4 23.cxd4 Na5 24.Ne5 Nc4 25.Qd3 Bb5

The position is approximately even, but suddenly White loses the track. 26.Neg4? The simple 26.Qc3 with equality should be preferred.
26...g6 Stronger is 26...Qa5!?
27.Qb3 Qa5 28.Kg2 Kg7 29.Kf3? A mistake. However, White is already in trouble; for example, he ends up in a very difficult ending after 29.a4 Nxg4 30.Nxg4 Bxa4! 31.Qxa4 Qxa4 32.Bxa4 h5. 29...Nxg4 30.Nxg4 Qe1

31.Nf2 On 31.Qxb5 Black wins by 31...Qf1+ 32.Nf2 Nd2+ 33.Bxd2 Qxb5 31...Ne5+! White resigns, because he gets mated: 32.fxe5 Be2+ 33.Kf4 g5#