The JR Chess Report (February 13): Le Seeks Repeat Title in Aeroflot Open

Jack Rabbit

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Sun Feb-13-11 06:03 PM
Original message

The JR Chess Report (February 13): Le Seeks Repeat Title in Aeroflot Open

Le Seeks Repeat Title in Aeroflot Open

Le Quang Liem
Photo by karpidis modified from flickr in Wikimedia Commons (Creative Commons License, Attribution/Share Alike)

Vietnamese GM Le Quang Liem leads the tenth annual Aeoflot Open in Moscow after six rounds with five points after playing a short draw today with grandmaster Rustam Kasimdzhanov of Uzbekistan.

Le won each game in his first four rounds and has drawn his only two games since. In yesterday's fifth round, he drew with forme European champion Evgeny Tomashevsky of Russia in 45 moves.

Five players are tied for second on 4� points each: Kasidzhanov, Tomashevsky, and Russian grandmasters Mikhail Kobalia, Denis Khismatullin and Nikita Vitiugov. Le will probably play Black against one of the last three named in tomorrow's seventh round.

Le, 19, won last year's Aeroflot Open with seven points out of a possible nine. Should he hold on and repeat this year, he will become the first two-time winner of what is considered to be the strongest open tournament on the annual chess calendar, yet alone the first ever to win two years in a row.

COMING ATTRACTIONS

27th International Open, Cappelle-la-Grande 26 February-5 March.
Reykjavik Open 9-16 March.
European Championships, France & Turkey 21 March-3 April. General Group: Aix-les-Bains; Women's Group: Ginziantep.
Dubai Open 9-19 April.
Asian Championships, Mashad 1-11 May.

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Jack Rabbit

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Sun Feb-13-11 06:04 PM
Response to Original message

1. This week's games

Your humble hare acknowledges the assistance of Rybka 4 and Fritz 6.0 on analysis.

Diagrams on the Jack Rabbit Chess Report are made with Aquarium, a commercially available interface for Rybka.

Diagrams and other images are hosted on imgur.com.

BLACK

WHITE
White to move
(This position is a theoretical draw)

I would like to thank my impressive and loyal staff: Buccaneer, Spitfire, Desperado, Swashbuckler, Pancho and Robin Hood.

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Jack Rabbit

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Sun Feb-13-11 06:05 PM
Response to Reply #1

2. Aeoflot Open, Moscow

Red Square, Moscow
Photo by Adam Baker, flickr (Creative Commons License, Attribution/Share Alike)

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Jack Rabbit

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Sun Feb-13-11 06:29 PM
Response to Reply #2

4. Le Quang Liem - Kamsky, Round 4

Le Quang Liem
Photo by karpidis modified from flickr in Wikimedia Commons (Creative Commons License, Attribution/Share Alike)

Le Quang Liem - Gata Kamsky
Aeroflot Open, Round 4
Moscow, 11 February 2011

Semi-Slav Queen's Gambit: Portisch Opening

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Qb3

4.Nc3 is the usual move and branches into the conventional variations of the Slav.

4...e6

If 4...dxc4 5.Qxc4 Bf5 6.g3 e6 7.Bg2 Nbd7 8.0-0 Be7 then:

If 9.Nc3 0-0 10.Re1 then:

If 10...Ne4 11.Qb3 Qb6 12.Nh4 then:

If 12...Bxh4 13.gxh4 then:

If 13...Nef6 then:

If 14.e4 Bg6 15.Qxb6 axb6 16.Bf4 Rfe8 17.Rad1 then:

17...e5 18.dxe5 Nxe5 19.f3 Bh5 20.Bxe5 Rxe5 21.a4 Re7 is equal (V. Georgiev-Smeets, IT B, Wijk aan Zee, 2007).
17...b5 18.Bd6 Nb6 19.b3 Nfd7 20.Rd2 f6 21.Bh3 f5 22.f3 Nf6 23.Rg2 Nbd7 is equal (Ngoc Truongson Nguyen-M. Gurevich, Mindsports Rpd, Beijing, 2007).

14.Qxb6 axb6 15.Bf4 b5 16.Bd6 Rfd8 17.e4 Bg6 18.f3 Ne8 gives White a small advantage (Landa-Najer, Russian Ch, Tomsk, 2006).

13...Ndf6 14.f3 Nxc3 15.bxc3 Qc7 16.e4 Bg6 17.c4 Rfd8 18.Be3 Nh5 19.Rad1 b6 20.Qb2 h6 draw (V. Georgiev-Tkachiev, Euro ChT, Crete, 2007).

If 12...Qxb3 13.axb3 Bb4 then:

14.Nxf5 exf5 15.Bxe4 fxe4 16.Bd2 Rfe8 17.Nxe4 Rxe4 18.Bxb4 Rxd4 19.Bc3 Rd6 20.Red1 Rxd1+ 21.Rxd1 Nc5 22.b4 is equal (Alekseev-Leko, IT, Dortmund, 2007).
14.Ra4 Bxc3 15.bxc3 Nxc3 16.Nxf5 exf5 17.Ra5 Rfe8 18.Bb2 Ne4 19.Rxf5 Nb6 20.Ra5 gives White a slight advantage in space (Krasenkow-Nezar, Op, Nancy, 2009).

If 10...Bg6 11.e4 b5 12.Qxc6 b4 13.e5 then:

If 13...Rc8 14.Qa6 bxc3 15.exf6 Nxf6 16.bxc3 Rxc3 then:

If 17.Ne5 Qb6 18.Qxb6 axb6 19.d5 then:

19...Bc5 20.dxe6 fxe6 21.Nxg6 hxg6 22.Be3 Bxe3 23.Rxe3 Rxe3 24.fxe3 Rd8 is equal (Le Quang Liem-Ni Hua, Ol, Dresden, 2008).
19...Bf5 20.Nc6 Bd6 21.Bf4 Bxf4 22.gxf4 Bh3 23.Ne7+ Kh8 24.Bxh3 Rxh3 25.d6 gives White a slight advantage with the d-pawn (Mamedyarov-Gelfand, Euro Club Cup, Plovdiv, 2010).

17.Qxa7 Be4 18.Re3 Rc2 19.Ba3 Bxa3 20.Qxa3 Bxf3 21.Bxf3 Qxd4 22.Rd1 Qc4 23.Qb3 Qxb3 24.axb3 Rb8 draw (M. Gurevich-Zhou Jinchao, Mindsports Rpd, Beijing, 2008).

If 13...bxc3 14.exf6 then:

If 14...cxb2 15.fxe7 bxa1Q 16.exd8Q Raxd8 17.Bg5 then:

If 17...Qb2 18.Bxd8 Rxd8 19.d5 Nf8 20.Ne5 Qd2 21.Qc1 Qxc1 22.Rxc1 exd5 23.Nc6 Rd7 then:

24.Bxd5 h6 25.Rc5 Ne6 26.Ra5 gives White a considerable advantage with his active Rook (M. Gurevich-Erichsen, Masters, Gibraltar, 2008).
24.Ne5 Rd8 25.Nc6 Rd7 26.Ne5 Rd8 27.Nc6 draw (Bu Xiangzhi-Zhou Weiqi, Chinese Ch, Xinghua, 2010).

17...Nb8 18.Qa4 Qb2 19.Bxd8 Rxd8 20.Qxa7 h6 21.a3 gives White an extra pawn (M. Gurevich-Sandipan, Mindsports Rpd, Beijin, 2008).

14...Nxf6 transposes into Le Quang Liem-Ni Hua, above.

If 9.e3 0-0 then:

If 10.Nc3 Ne4 11.Qe2 Nxc3 12.bxc3 Be4 13.a4 c5 14.Bd2 Qc7 draw (Drasko-Matulovic, Yugoslav Ch, Novi Sad, 1995).
If 10.Rd1 then:

If 10...Qc7 11.Nc3 then:

11...Bg6 12.h3 Rac8 13.Nh4 Bh5 14.g4 Nd5 is equal (Negi-Sethuraman, Indian Ch, New Delhi, 2010).
11...e5 12.h3 Rad8 13.g4 Be6 14.Qe2 h6 15.e4 exd4 16.Nxd4 Bd6 is equal (Wang Hao-Bruz�n, Ol, Khanty-Mansiysk, 2010).

If 10...Ne4 11.Nc3 Nxc3 12.bxc3 Be4 then:

13.Ne1 Bxg2 14.Nxg2 c5 is equal (Jeremic-Raicevic, TT, Herceg Novi, 2005).
13.Qe2 c5 14.Bb2 Qc7 15.Bf1 Rac8 16.Nd2 is equal (Kanep-Erenburg, World Jr Ch, Nakhchivan, 2003).

5.Nc3 Nbd7

If 5...dxc4 6.Qxc4 b5 then:

If 7.Qd3 then:

If 7...Nbd7 8.e4 b4 9.Na4 then:

If 9...Qa5 10.b3 c5 then:

If 11.e5 Nd5 12.Bd2 Bb7 then:

If 13.dxc5 Bxc5 14.Qb5 Qxb5 15.Bxb5 Be7 16.Rc1 then:

16...a6 17.Bc6 Bxc6 18.Rxc6 0-0 19.0-0 Rfc8 20.Rfc1 Rxc6 21.Rxc6 Kf8 22.Kf1 draw (Horvath-Nielsen, Austrian ChT, Graz, 2002).
16...Kd8 17.0-0 h6 18.Be3 Nxe3 19.fxe3 Rc8 20.Rxc8+ Bxc8 is equal (Tregubov-Horvath, Op, Deizisau, 2001).

13.Rc1 a6 14.Ng5 cxd4 15.Qxd4 Be7 16.Bd3 N5b6 17.Nxb6 Qxb6 18.Qf4 Bxg5 19.Qxg5 Qd4 is equal (Tregubov-Sjugirov, Russian Ch HL, Novokuznetsk, 2008).

11.Be3 Bb7 12.Nxc5 Bxc5 13.dxc5 0-0 14.Qb5 Qxb5 15.Bxb5 Bxe4 16.Rc1 Rfc8 17.c6 Nb6 18.Ne5 gives White a slight edge with more space, the Bishop pair and the passed c-pawn, but King safety is a problem (Jakovenklo-Karjakin, Grand Prix, Sochi, 2008).

If 9...Bb7 then:

If 10.Bg5 Qa5 11.b3 c5 12.Bxf6 gxf6 then:

If 13.Be2 0-0-0 14.0-0 Kb8 15.d5 then:

If 15...Nb6 16.Nxb6 Qxb6 17.Rad1 Bh6 18.Qc4 gives White a slight advantage in space (Karpov-Gelfand, IT, Linares, 1993).
If 15...Bd6 16.dxe6 Nb6 then:

If 17.Nxb6!? then:

If 17...Bxh2+?! 18.Nxh2!! Rxd3 19.Nc4! Qd8 20.e7 then:

20...Qd4? 21.Bxd3 Qxd3 22.Rad1 Qxe4 23.Rd8+ gives White an advantage that is converted to victory after an additional 25 moves (Georgiev-Ivanisevic, Serbian ChT, Zlatibor, 2006).
20...Qxe7 21.Bxd3 Rd8 22.Bc2 gives White "only" a strong advantage.

17...Qxb6 18.Qc4 fxe6 19.Rfe1 Rhg8 is equal.

17.Qc2 Nxa4 18.bxa4 fxe6 is equal

13.d5 0-0-0 14.Be2 Nb6 15.Nxb6+ Qxb6 16.0-0 Rg8 is equal (Vaulin-Korotylev, Geller Mem, Moscow, 1999).

10.e5 Nd5 11.Bd2 N5b6 12.Qc2 Nxa4 13.Qxa4 a5 14.Rc1 gives White a slight advantage in space and development (Tregubov-Yakovic, Russian Ch, Kazan, 2005).

7...a6 8.Bg5 c5 9.Bxf6 gxf6 10.e3 Bb7 11.Be2 Nc6 12.0-0 cxd4 13.exd4 Nb4 14.Qd2 h5 is equal (Korchnoi-Piket, IT, Sarajevo, 1998).

7.Qb3 Nbd7 8.Bg5 Be7 9.e3 ( transposes into the notes following Black's fourth move.) 9...a6 transposes to the notes following White's sixth move.

6.Bf4

More usual is 6.Bg5 Be7 7.e3 0-0 when:

If 8.Bd3 dxc4 9.Bxc4 b5 10.Be2 a6 then:

If 11.0-0 c5 12.Rfd1 then:

12...Bb7 13.dxc5 Qc7 14.Bxf6 Bxf6 15.Qa3 Nxc5 16.Rac1 Qb6 is equal (Chiburdanidze-Smyslov, TM, Monte Carlo, 1994).
If 12...c4 13.Qc2 Nd5 14.Bxe7 Qxe7 15.e4 Nf4 16.Bf1 f5 is equal (Z. Mamedyarova-Yeke, Euro ChW, Antalya, 2004).

If 11.a4 b4 then:

12.Bxf6 Nxf6 13.Nb1 c5 14.dxc5 Bxc5 15.Nbd2 Bb7 16.Nc4 Bd5 gives White more space and the Bishop pair (Korchnoi-Short, IT A, Wijk aan Zee. 1997).
12.Na2 c5 13.0-0 cxd4 14.exd4 Bb7 15.Nc1 Bd5 16.Qd1 Ne4 17.Bxe7 Qxe7 gives Black the advantage in space and stronger pawns (Bareev-D. Gurevich, Op, Moscow, 1994).

If 8.Be2 then:

If 8...a6 9.0-0 b5 10.cxd5 cxd5 11.Rac1 Bb7 12.a4 b4 then:

13.Na2 Bd6 14.Bf4 Bxf4 15.exf4 a5 16.Ne5 Ne4 is equal (Bondarevsky-Ragozin, Soviet Ch, Leningrad, 1947).
13.Nb1 Rc8 14.Nbd2 Qb6 15.Ne5 Bd6 16.Bxf6 Nxf6 17.f4 Rxc1 18.Rxc1 Rc8 19.Rxc8+ Bxc8 20.Qc2 Qc7 21.Qxc7 Bxc7 22.Nd3 Nd7 draw (Bondarevsky-Zamikhovsky, Soviet Ch Semifnl, Leningrad, 1949).

If 8...dxc4 9.Qxc4 (9.Bxc4 transposes to the main line of this variation) 9...Nd5 10.Bxe7 Qxe7 11.0-0 then:

11...N5b6 12.Qd3 e5 13.Rfd1 Re8 14.Qe4 exd4 15.Qxe7 Rxe7 16.Nxd4 Nf6 17.Nb3 Be6 18.Nc5 Nbd5 19.Rd3 Nxc3 20.Rxc3 Rd8 21.Rd3 Rxd3 22.Bxd3 Bc8 23.b4 g6 24.Rc1 draw (Roiz-Malakhov, Russian ChT, Dagomys, 2008).
11...Re8 12.Rfd1 N5b6 13.Qb3 e5 14.a4 e4 15.Nd2 Nf6 16.a5 gives White the advantage in space and the initiative (Rauzer-Yudovich, Soviet Ch, Moscow, 1931).

6...a5 (N)

If 6...Be7 7.h3 0-0 8.e3 Ne4 9.Bd3 then:

9...Nxc3 10.Qxc3 c5 11.0-0 cxd4 12.exd4 dxc4 13.Qxc4 Nf6 14.Rac1 gives White a slight advantage in space (Markos-Miton, World Jr Ch, Athens, 2001).
9...f5 10.cxd5 exd5 11.Bxe4 fxe4 12.Nxe4 a5 13.Nc3 Qe8 14.Qc2 Bb4 15.Ne5 Nxe5 16.Bxe5 Bf5 is equal (Hort-Hermann, Bochum, 1981).

7.cxd5 exd5 8.e3

With the "book" tossed out, the game is equal. Both sides still need to complete development.

8...Nb6

If 8...Nh5 9.Bg5 Ndf6 10.Bd3 then:

10...Bd6 11.0-0 h6 12.Bxf6 Nxf6 13.Na4 Rb8 14.Rac1 0-0 is equal.
10...h6 11.Bxf6 Nxf6 12.0-0 Bd6 13.Na4 Rb8 14.Rac1 0-0 is equal.

9.Bd3 Bg4!?

If you want to get squares, you've got to give squares. -- Bobby Fischer
Black is giving White the center in hopes of exerting pressure on White from the kingside.
Another and better way of accomplishing this idea is 9...Nh5 10.Be5 f6 11.Bg3 Be6 12.0-0-0 g6 13.a4 with equality.

10.Ne5 Bh5!?

White has the advantage in space and more freedom.
If 10...a4 11.Qc2 Be6 12.Bg5 h6 13.Bh4 Bd6 14.0-0 0-0 is equal.

11.0-0 a4 12.Qc2 Bg6 13.e4!?

Page Dr. Tarrasch. White wants freedom for his pieces and will accept an isolated pawn to get it.
13.Rfe1 Bd6 14.Nxg6 hxg6 15.Bxd6 Qxd6 16.h3 locks up the center and one side or the other must either risk a pawn weakness there or find a way to break through on the flanks.

13...dxe4

Black saddles White with an isolated d-pawn.
13...Bxe4 14.Bxe4 dxe4 15.Nxe4 Nxe4 16.Qxe4 gives White a small advantage with his splendid center, but it is tempered by the isolated pawn.

14.Nxe4 Nxe4 15.Bxe4 Be7?

Black misses White's coming tactical shot. It could be prevented with an exchange of Bishops.
15...Bxe4! 16.Qxe4 Be7 17.Rae1 0-0 18.Re2 Re8 is equal: Black has fewer pawn weaknesses and White has more space.

BLACK: Gata Kamsky

WHITE: Le Quang Liem
Position after 15...Bf8e7

16.Bxc6+!!

The Bishop sacrifice takes full advantage of Black's poor timing. White gets two pawns for the Bishop and launches a vicious attack.

16...bxc6 17.Qxc6+ Nd7

No better is 17...Kf8 18.Qxb6 Qxb6 19.Nd7+ Ke8 20.Nxb6 Ra6 21.Bc7, leaving White two pawns to the good with active and coordinated minor pieces.

18.Nxg6

If 18.Rfe1 Rc8 19.Qxa4 Ra8 20.Qc6 then:

If 20...Rc8 21.Rac1 Rxc6 22.Nxc6 then:

22...Nf6 23.Nxd8 Kxd8 24.Be5 gives White the two connected queenside passers while Black's King is exposed.
22...Qa8? 23.Rxe7+ Kf8 24.Rxd7 Black is toast.

If 20...Bf5? 21.g4 then:

21...Be6 22.d5 Bxd5 23.Qxd5 Nxe5 24.Qxe5 gives White the two extra pawns.
21...0-0 22.gxf5 Nf6 23.Qg2 Nh5 24.Be3 White has three extra pawns.

18...hxg6 19.Rfe1 0-0

Black finally castles.

BLACK: Gata Kamsky

WHITE: Le Quang Liem
Position after 19...0-0

20.Bc7!

White gets his piece back and keeps the two pawns profit.

20...Nb8 21.Bxd8 Nxc6 22.Bxe7 Nxe7 23.Rxe7 Rfd8

If 23...Rfe8 24.Rxe8+ Rxe8 25.Kf1 Rb8 26.b3 Rb4 27.d5 then White creates new passed pawns while Black is occupied with the d-pawn.

24.Rd1 a3

If 24...Rab8 25.Re2 Rd5 then:

26.f4 Rbd8 27.Red2 Kf8 28.h4 White's breakthrough is inevitable.
26.Kf1 g5 27.h3 Rb4 28.Red2 f5 29.Ke2 Black still cannot take the d-pawn and White can break through on either wing.

25.b3 Rac8 26.Kf1 Rd5 27.Rd2 1-0

If 27...Rcd8 then 28.Ra7 Rxd4 29.Rxd4 Rxd4 30.Rxa3 gives White two connected passed pawn in a Rook-and-pawn ending.
Mr. Kamsky, who has only seconds on his clock for 14 moves, resigns.

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Jack Rabbit

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Tue Feb-15-11 04:48 PM
Response to Reply #2

8. Lenic - Le, Round 3

Le Quang Liem
Photo by karpidis modified from flickr in Wikimedia Commons (Creative Commons License, Attribution/Share Alike)

Luka Lenic - Le Quang Liem
Aeroflot Open, Round 3
Moscow, 10 Febuary 2011

Open Sicilian Game: Dragon Defense

1.Nf3 g6 2.c4 Bg7 3.e4 c5 4.d4 cxd4 5.Nxd4 Nc6 6.Be3 Nf6

This position could arise from the Dragon Defense of an Open Sicilian (1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Be3 Nf6), which is one of the best things that can happen to a Pirc.

7.Nc3 0-0 8.Be2 d6

If 8...b6 9.0-0 Bb7 10.f3 then:

If 10...e6 then:

If 11.Nxc6 then:

If 11...Bxc6 12.Qd6 Ne8 13.Qd2 f5 14.exf5 gxf5 15.Rac1 then:

If 15...Qe7 16.Rfd1 then:

16...Kh8 17.Bf1 Rg8 18.Kh1 gives White a small advantage in space (Chekhov-Vorobiov, Pripis Mem, Moscow, 2000).
11.Qd2 d5 12.Nxc6 Bxc6 13.cxd5 exd5 14.e5 Ne8 15.f4 f6 16.Bd4 fxe5 17.Bxe5 Bxe5 18.fxe5 gives White the advantage in space (Gasanov-Guseinov, Op, Alushta, 2001).

16...Qh4 17.b4 Rf7 18.Nb5 Be5 19.f4 Rg7 20.Bf1 Bb8 21.Nd4 Bb7 22.g3 Qh5 23.Bg2 Be4 24.c5 Nf6 25.c6 Bc7 26.Qe2 Qxe2 27.Nxe2 Bxg2 28.Kxg2 Nd5 draw (W. Schmidt-Jacek, IT, Poznan, 1987).

If 10...Rc8 11.Qd3 then:

If 11...Nh5 Bxc6 then:

If 12.Rfd1 Ne5 13.b3 f5 14.exf5 gxf5 15.Qc2 Qe8 16.Nxf5 Nxf3+ then:

17.Kh1 Bxc3 18.Nh6+ Kh8 19.Qxc3+ e5 20.Rf1 Ng3+ and in the face of 21.hxg3 Qh5# White resigns (Hole-Barth Sahl, Norwegian Ch, Sandnes, 2005).
17.Bxf3 Bxf3 18.Nxg7 Bxd1 19.Nxe8 Bxc2 20.Nc7 Rxc7 21.Nd5 Rb7 22.Nxe7+ Kf7 23.Nd5 White resigns without waiting for Black to reply (Kreiman-T. Taylor, World Op, Philadelphia, 1992).

12.Nc2 d6 13.Rab1 Qd7 14.Rfd1 f5 15.exf5 gxf5 16.Bh6 Ne5 17.b3 f4 18.Bxg7 Kxg7 19.Qd4 Kg8 20.Qxe5 Black resigns (So. Polgar-Sosonko, IT, Aruba, 1991).

11...d6 12.Rac1 a6 13.Rfd1 Nd7 14.Nxc6 Bxc6 15.b4 Re8 16.Bf1 gives White the advantage in space (Timoshchenko-Skembris, Op, Bozen, 1998).

9.0-0 Bd7 10.Rc1

If 10.Qd2 Nxd4 11.Bxd4 Bc6 12.f3 a5 13.b3 Nd7 14.Be3 Nc5 then:

If 15.Rab1 Qb6 16.Rfc1 Rfc8 17.Rc2 Qd8 18.Bf1 then:

If 18...h5 19.a3 Kh7 then:

If 20.b4 axb4 21.axb4 Ne6 22.Nd5 Ra3 23.Kh1 Rca8 24.f4 Ra1 then:

25.Rxa1 Rxa1 26.Rc1 Qa8 27.Bd3 Nd4 28.Rxa1 Qxa1+ 29.Qc1 gives White a slim advantage in space (Zawadzka-Sikorova, FIDE Knock Out W, Ekaterinburg, 2007).
25.Rbc1 Qh8 26.Bd3 Bxd5 27.exd5 Nd4 is equal (Stubberud-E. Lie, Norwegian Ch, Moss, 2006).

If 20.Ne2 then:

If 20...Qh8 21.Nf4 then:

21...b6 22.Kh1 Kg8 23.b4 axb4 24.axb4 Nd7 25.Nd5 Bxd5 26.cxd5 Rxc2 27.Qxc2 Bd4 28.Qc6 gives White a huge spatial andvantage and the initiative (Bareev-Pavlovic, EU ChT, Plovdiv, 2003).
21...a4 22.b4 Nb3 23.Qf2 e5 24.Ne2 Bd7 25.Rd1 Be6 26.Nc3 Bxc4 27.Bxc4 Rxc4 28.Nxa4 Rxc2 29.Qxc2 gives White the advantage in space (Kuipers-K. Lie, IT C, Wijk aan Zee, 2010).

20...Ne6 21.Kh1 b5 22.Nc3 b4 23.axb4 axb4 24.Na2 Rxa2 25.Rxa2 gives White the exchange (Psakhis-Savchenko, Aeroflot Op B, Moscow, 2005).

18...Be5 19.a3 e6 20.b4 axb4 21.axb4 Na4 22.Nxa4 Rxa4 23.b5 Be8 24.Rd1 gives White the initiative (Jankovic-Gunnarsson, Op, Reykjavi, 2008).

15.Rac1 transposes into the text.

10...Nxd4

10...a6 11.Nb3 a5 12.f3 a4 13.Nd2 a3 14.b3 gives White a slight advantage in space (Huzman-Nestorovic, Euro Ch, Budva, 2009).

11.Bxd4 Bc6 12.f3 Nd7 13.Be3

13.Bxg7 Kxg7 14.Qd4+ Kg8 15.Rfd1 Qa5 16.a3 gives White the advantage in space (Plachetka-Vokac, Trencianske Teplice, 1985).

13...a5 14.b3 Nc5 15.Qd2 Qb6 16.Nb5

If 16.Nd5 Bxd5 17.cxd5 Qb4 18.Rfd1 then:

If 18...Rfc8 19.Rc4 Qxd2 20.Rxd2 b5 then:

21.Rxc5! dxc5 22.Bxb5 Bd4 23.Bxd4 cxd4 24.Bc6 gives White more space, more piece activity and the initiative (Alburt-Savon, Soviet Ch, 1st League, Odessa, 1974).
21.Rc1 b4 22.Bb5 Bc3 23.Rdc2 Rab8 gives White more space in the center while Black has potential on the queenside. (Simonet-Hoffman, Spanish ChT, Olite, 2006).

18...f5 19.exf5 Rxf5 20.Rc4 Qxd2 21.Rxd2 b5 22.Rcc2 b4 23.Bxc5 dxc5 24.Rxc5 gives White an extra pawn (Aginian-Mrvova, OlW, Khanty-Mansiysk, 2010).

16...Rfc8 17.Kh1

If 17.Rfd1 Qd8 then:

If 18.Bf1 Qf8 19.Nc3 then:

19...b6 20.Nd5 Rab8 21.Rb1 Be5 22.Bh6 Bg7 23.Bg5 Rb7 24.Re1 gives White a slight advantage in space (Sax-M. Petursson, World Cup, Reyjakvik, 1988).
If 19...Qd8 20.Qf2 then:

20...b6 21.Qd2 Ra7 22.Rb1 Bd7 23.Nd5 Bc6 24.a3 gives White a small advantage in space (Vaganian-S. B. Hansen, Bundesliga 0506, Germany, 2006).
20...Qf8 21.Qd2 Qd8 22.Nd5 Bxd5 23.cxd5 gives White the advantage in space (Drei-Vezzosi, IT 9900, Reggio Emilia, 2000).

If 18.Nd4 Qf8 19.Rb1 then:

19...Bd7 20.Bf1 Be6 21.Nxe6 Nxe6 22.Rbc1 a4 23.Qb4 is equal (A. Petrosian-Bischoff, Op, Schwerin, 1999).
19...Be5 20.Nxc6 Rxc6 21.f4 Bf6 22.Bf3 gives White the advantage in space and the Bishop pair in a reasonably open game (Borges Mateos-Rivera, Madrid, 1997).

17...Qd8 18.Nd4 (N)

18.Rfd1 Qf8 19.Nc3 then:

19...b6 20.Nd5 Rab8 21.Qe1 Rb7 22.Qh4 h5 draw (Tseshkovsky-Pavlovic, Yugoslav ChT, Tivat, 1995).
19...Nd7 20.Nd5 a4 21.b4 a3 22.Bg5 Bxd5 23.Qxd5 b6 24.Be3 gives White a significant advantage in space (Christiansen-Pekarek, Bundesliga 9293, Germany, 1992).

18...Bd7

White has a slight advantage in space.

19.Rfd1 h5!?

White now obtains a small advantage in space.
If 19...Be5 20.Qe1 Bf6 21.Rb1 Qc7 22.a3 Kg7 23.Qg3 contnues to give White a slight advantage.

20.Bf1 Kh7 21.Ne2 Bc6!?

White posts his Bishop where it bites grante.
21...Ra6 22.Nf4 Rac6 23.Kg1 b6 24.Be2 Be5 25.Nd3 continues to give Black a small advantage.

BLACK: Le Quang Liem

WHITE: Luka Lenic
Position after 21...Bd7c6

22.Nf4!

22...Bh6 23.Qf2

White pivots and goes after the Bishop
If 23.Nd3!? Qf8 24.Nxc5 dxc5 then:

25.Rc3 a4 26.Rd3 axb3 27.axb3 Bxe3 28.Qxe3 continues to give White a small advantage.
25.Rb1!? b6! 26.Bxh6 Qxh6 27.Qc3 Qf4 28.Rd3 leaves White's only claim to advantage his command of the d-file.

23...Qh8 24.Rc2 Qf6 25.Nd5!?

This throws away part of White's advantage in an attempt to thin out Black's center.
Better is 25.Qd2 Qg7 26.Bd3 h4 27.Be2 b6 28.Rf1 giving White a small advantage in space.

25...Bxd5 26.Rxd5 Bxe3 27.Qxe3 Qa1!?

Black runs the risk of getting his Queen trapped in the enemy back rank, but immediately benefits from forcing a White Rook to a passive, defensive position.
If 27...Ne6! 28.Kg1 h4 29.e5 dxe5 30.Rxe5 Rd8 31.Rc1 is equal.

28.Kg1 Nd7

If 28...b6 29.Rcd2 then:

29...a4! 30.b4 Ne6 31.Kf2 Nc7 32.Rg5 gives White the advantage in space and an active Rook.
If 29...Rc6 30.f4 Rf8 31.Qf3 then:

If 31...Rcc8 32.e5 dxe5 33.fxe5 Qb1 34.Re2 then:

34...a4 35.bxa4 Ra8 36.Qf2 Qf5 37.Qxf5 gxf5 38.Rb2 gives White a small advantage in space.
If 34...f6? 35.exf6 exf6 36.Re7+ Kg8 37.Rxh5!! 37...Rf7 38.Rxf7 Kxf7 39.Rh7+ Kg8 40.Qh3 wins for White.
37...gxh5 38.Qg3+ Kh8 39.Qg7#.

If 31...Rc7!? allows White to penetrate after 32.g3 Qb1 33.e5 dxe5 34.fxe5 f6 35.Rd8!.

29.Qg5!?

White loses a great deal of his advantage by attacking the e-pawn which is easily defended by a Knight that lands on a better square.
If 29.Qe2 then:

If 29...Nc5 30.f4 Ne6 31.Qe3 a4 then:

If 32.f5 32...Nc7 33.Rd4 axb3 34.axb3 Nb5 35.Rd3 then:

35...Qa7 36.fxg6+ fxg6 37.Qxa7 Rxa7 38.Rf2 Nc7 39.Rf7+ leaves White with the active Rook and, after 40.Rxe7, an extra pawn.
If 32.e5? axb3! 33.axb3 then:

33...Ra5! then:

34.Rcd2 Rxd5 35.Rxd5 then:

35...dxe5 36.fxe5 Kg7 37.h3 is equal.
35...Na7 36.Rf2 Nc6 37.Rd5 Ra2 38.Rxa2 Qxa2 39.f6 gives White the advantage with mobile pawns.

If 34.f5?! Nc7! 35.Rdd2 Qe5 36.Rf2 then:

36...axb3 37.axb3 Ne8 38.fxg6+ fxg6 39.Bh3 Ra1+ is equal.
36...Ne8 37.fxg6+ fxg6 38.Rf7+ Kg8 39.Rf4 is equal.

33...Qa7!? 34.Qxa7 Rxa7 35.exd6 exd6 36.f5! gxf5 37.Rf2 gives White the advantage: he will win back his pawn and has a queenside pawn majority.

If 29...Qf6 30.Qd2 Nc5 31.Qe3 Ne6 then:

If 32.g3 Qa1 33.f4 a4 then:

If 34.e5 then:

If 34...Qb1 35.Rf2 axb3 36.axb3 Ra3 37.Rb5 Ng7 38.exd6 Nf5 then:

39.d7! Rd8 40.Qd3 Qxd3 41.Bxd3 Rxd7 42.Rxf5 Rxd3 43.Rxf7+ gives White an extra pawn.
If 39.Rxf5 Qxf5 then:

If 40.Qxe7! then after 40...Rca8 41.d7 White wins.
40.dxe7? Re8 41.Bd3 Qe6 42.Qxe6 fxe6 the d-pawn and leave Black with the advantage.

If 34...axb3 35.axb3 dxe5 36.fxe5 then:

36...Kg7 37.Rf2 Rd8 38.Qd2 Rdc8 39.Kg2 gives White the better game, but it is far from won.
36...Qa7 37.Qxa7 Rxa7 38.Bh3 Rc7 39.Bxe6 fxe6 40.Rb5 gives White the most active Rook on the board, but winning will be an arduous task.

32.Rcd2?! a4! 33.b4 Qa1 34.Rc2 Qb1 is equal.

If 29.Qd2 a4 30.b4 a3 31.c5 then:

If 31...Nf6 32.Rd3 then:

If 32...dxc5 33.bxc5 Kg7 34.Rb3 then:

If 34...Qe5! 35.Qb4 Nd7 36.Rbc3 b6 then:

37.cxb6 Nxb6 38.Qxb6 Rxc3 39.f4 Rxc2 40.fxe5 gives White the advantage, owing to his active Queen.
37.c6?! Nc5! 38.Bb5 Ne6 39.Rc1 Qd4+ 40.Qxd4+ Nxd4 is equal.

34...Rd8?! 35.Qf2! Rd1 36.Rd2 Rc1 37.Rxb7 Ra5 38.Rc2 gives White the advantage.

If 32...Ne8 then:

33.Rb3 Nf6 34.Rcc3 dxc5 35.Qc2 Qe1 36.Rb1 gives White domination of the queenside and center.
33.Rdc3?! dxc5! 34.bxc5 Rd8! 35.Rd3 Rxd3 36.Qxd3 gives White only a slim advantage.

If 31...Ne5 32.f4 Ng4 then:

33.Qe2 Qb1 34.Rd1 Qxb4 then:

If 35.h3 Nf6 36.e5 dxe5 37.fxe5 Ng8 38.Qf2 Nh6 is equal.
If 35.Rc4 Qb2 then:

If 36.Rc2 Qf6 37.h3 Nh6 then:

38.cxd6 exd6 39.Rxc8 Rxc8 40.Qf2 Qb2 41.Rd2 gives White a small advantage; White's a-pawn is safe for now.
38.Qf2 dxc5 39.Rxc5 Rxc5 40.Qxc5 Qe6 leaves Black with one extra pawn and and the initiative rising from the threat against another.

36.Rd2 Qf6 37.h3 Nh6 38.e5 dxe5 39.fxe5 Qe6

If 33.e5 dxc5 34.bxc5 Nxh2 35.Kxh2 Qxf1 36.Rd7 gives White a fair advantage in space.

BLACK: Le Quang Liem

WHITE: Luka Lenic
Position after 29.Qe3g5

29...Nf6!

Black threatens to win the exchange and shields his e-pawn.
If 29...Qf6?! 30.Rxa5 then:

30...Qxg5 31.Rxg5 e5 32.Rd2 gives White the initiative againt Black's center pawns.
30...Rxa5 31.Qxa5 Qd4+ 32.Rf2 gives White an extra pawn.

30.Rxa5 Qd4+ 31.Rf2

31.Kh1?! Qd1 32.Rc1 Rxa5 33.Qe3 Qxc1 34.Qxc1 Rxa2 gives Black a strong attack on the a-file.

31...Rc5!!

Black sacrifices his two Rooks for White's Queen. He gets the better deal because his Queen is centralized and prarlyzing the defense of White's King with the pin of the Rook at f2.

32.Qxc5

White loses quickly if he takes with the Rook.
If 32.Rxc5? Rxa2! 33.Qh4 dxc5 then:

34.Qg3 g5! 35.h4 Qe3 36.hxg5 Nxe4!! leads to Black winning material, leaving Black devastated.
If 34.g4 g5 35.Qg3 hxg4 then:

36.Qg2 e5 then:

37.h3 gxf3 38.Qxf3 Rxf2 39.Qxf2 Nxe4 40.Qxd4 cxd4 gives Black two extra pawns, which are mobile passers.
If 37.Qg3 Nh5 38.Qg2 Nf4 39.Qg3 gxf3 40.Qxf3 Ra1 41.Kh1 g4 then:

42.Qg2 Nxg2 43.Kxg2 Qxe4+ finds the White King in a mating net.
42.Qxg4 Qxf2 43.Qf5+ Kg8 44.Qc8+ Kg7 45.Qg4+ Ng6 Black mates in two.

If 36.Kg2 Nh5 then:

If 37.Rxa2 Nxg3 38.hxg3 gxf3+ 39.Kxf3 g4+ then:

40.Kg2 Qxe4+ 41.Kh2 Kg6 42.Bg2 Qe3 43.Ra7 f5 Black wins.
40.Kxg4 Qxe4+ 41.Kh3 Qh1+ wins the Bishop.

If White saves the Queen 37.Qc7?? then 37...Qxf2+! 38.Kh1 Qxf1#.

32...dxc5

32...Qxc5? 33.Rxc5 dxc5 34.e5! Nd7 35.f4 Nf8 36.Rd2 gives White a powerful initiative and an extra pawn.

33.Rxa8 h4 34.b4!?

Wite sacrifices a pawn to more easily activate his Rook.
If 34.g4 then:

34...hxg3 35.hxg3 Nh5 36.g4 Nf4 is equal.
If 34...Qd6!? then:

35.Ra5! b6 36.Rb5 Ne8 37.b4 cxb4 38.e5 gives White a slight initiative.
35.a3!? b6 36.Ra6 Nd7 37.f4 Qd4 is equal.

34...cxb4 35.Ra5?!

White seals his doom.
35.g4 hxg3 36.hxg3 Nh5 37.g4 Ng3 38.Kg2 Nxf1 39.Rxf1 remains equal.

35...Nh5!

Black sets up the sacrifce which he uses to win outright.

36.Rd5 Qe3 37.Rd3 Qa7 38.Rd5?!

If 38.Rdd2 Ng3!! then:

If 39.Rc2 Qe3 then:

40.Rcd2 e6 41.Rc2 Qc5 42.Bd3 Kh6 43.Bf1 g5 leaves Black with a strong tactical edge, but far from won.
If 40.c5? Kh6 then:

If 41.e5 e6 42.Rcd2 Qxe5 then:

If 43.Rc2 Qe3 44.h3 e5 then:

If 45.f4 exf4 46.Kh2 Qd4 47.Rf3 Qd1 48.Rcf2 g5 leaves White with no moves other than those that lose immediately:

font color="darkred"]49.Rb2 Nxf1+ 50.Rxf1 Qxf1 51.Rd2 f3 is hopeless for White.
49.Kg1 Qc1 50.Rb3 Qxc5 51.Rbf3 Ne4 wins at least the exchange.

45.Rcd2 Qxc5 46.Rc2 Qb6 47.Bd3 f5 Zugzwang!

43.c6 Nxf1 44.Rxf1 Qe3+ 45.Rdf2 bxc6 wins for Black.

If 41.Bb5 Qd4 then:

42.Bd3 e5 43.Rcd2 f5 44.exf5 gxf5 45.Bc2 Qxc5 Black wins in all variations:

46.hxg3 hxg3 47.Kf1 gxf2.
If 46.Bd1 Qe3 then:

47.Rde2 Nxe2+ 48.Bxe2 e4 49.g3 Qa3.
47.hxg3 hxg3 etc.

If 42.Rcd2 then after 42...Qxc5 43.Bf1 e5 44.Rc2 Qb6 45.Bd3 Qe3 White wins by marching his kingside paws forward.

39.hxg3?? hxg3! wins the Rook.

BLACK: Le Quang Liem

WHITE: Luka Lenic
Position after 38.Rd3d5

38...Ng3!!

White proffers the Knight; Black dare not accept.

39.c5?

After this move, White must must depend on Black to make a mistake in order to avoid loss.
If 39.Rdd2 then:

If 39...e6 40.h3 Qc5 41.Rc2 then:

If 41...f5 42.exf5 gxf5 then:

If 43.Bd3 Kg6 44.Bf1 e5 45.Rcd2 Qa7 then:

If 46.Rc2 e4 47.fxe4 Nxe4 then:

If 48.Bd3 Nxf2 49.Rxf2 Kg7 50.Bxf5 Qd4 51.Bg4 Qxc4 then:

If 52.Bd1 then:

52...Qc1 53.Rf1 Qc5+ 54.Rf2 Kg6 55.Bb3 Kg5 White has few moves because the Queen is active; he has no reserve pawn tempi.
52...Qc5 53.Bc2 Kh6 54.Ba4 Kg5 55.Bb3 Qc1+ 56.Rf1 Qe3+ gives White few moves.

52.Re2 b3 53.axb3 Qxb3 gives Black a passed pawn and an active Queen.

48.Rce2 Qd4 wins the exchange.

46.Rb2 Kh6 47.Rbc2 e4 48.fxe4 Nxe4 wins the exchange.

43.Rcd2 Kg6 44.f4 Ne4 wins at least the exchange.

If 41...Kg7 42.Rcd2 g5 43.Rc2 then:

If 43...Kg6 44.Bd3 Qe3 45.Bf1 b3 46.axb3 Qxb3 47.Rb2 Qe3 then:

48.Rbc2 b6 49.Rcd2 Qa3 50.Rd3 Qc5 51.Rdd2 Nxf1 52.Kxf1 Qxc4+ leaves Black with the active Queen against two rather passive Rooks.
48.Rxb7? Qd4 49.Rb1 Nh1 50.Kxh1 Qxf2 51.Rc1 Qe3 is a likely win for Black.

43...b6 44.Rcd2 Kf6 45.Rc2 Qe3 46.Rcd2 Qe1 gives Black a healthy advantage, but the game is not yet won.

39...e5 40.Rc2 Qe3 41.Rcd2 Kh6 42.Rd3 Qa7 43.Rdd2 f6 gives Black more than a fair advantage owing to the pin on the Rook, but White still has chances of counterplay.

39...e6 40.Rd7

If 40.Rdd2 Qxc5 41.Rc2 Qe3 42.Rcd2 then:

If 42...b5! then:

If 43.Rc2 b3 44.axb3 b4 45.Bc4 Kg7 then:

If 46.Ba6 then:

If 46...Qxb3 47.hxg3 hxg3 then:

If 48.Bf1 then after 48...Qe3 49.f4 g5 50.Rce2 gxf2+ 51.Kh2 Qxf4+ Black wins easily.
48.Rfd2 Qb1+ 49.Bf1 b3 50.Rb2 Qe1 51.Re2 Qc3 wins easily.

46...Qe1+?! 47.Bf1 Nxf1 48.Rxf1 Qe3+ 49.Kh1 Qxb3

46.Ra2 Qe1+ 47.Bf1 Qc1 48.Rac2; 46.Bf1 Qxb3 47.Rb2 Qe3 48.Rxb4 Nxf1 49.Kxf1 Qc1+ 50.Ke2 Qc2+ 51.Ke1 Qc3+ wins the Rook and the house.

43.Bxb5? Qe1+! forces the following: 44.Bf1 Nxf1 45.Rfe2 Qc1 46.Rc2 Ng3+!! 47.Rxc1 Nxe2+, winning.

If 42...Kh6 then:

If 43.Rd3 then:

If 43...Qc1 44.Rd8 Kg7 45.Rd7 Qe3 then:

46.Rdd2 b3 47.axb3 Qxb3 48.Rb2 Qe3 49.Rbc2 g5 Black wins by bringing his pawns and King forward, squeezing the last breath of out White.
If 46.Rd3 Qb6 47.Rdd2 b3 48.axb3 Qxb3 49.Rb2 Qe3 then:

50.Ra2 50...Kh6 51.Rac2 Kg5 52.Rcd2 Kf4 White must feel he is in the coils of a boa.
50.Rxb7 Nh1 51.Kxh1 Qxf2 52.Rb1 e5 leaves Black running out of reserve pawn tempi; he will soon face Zugzwang.

After 43...Qb6 44.Rdd2 b3 45.axb3 Qxb3 46.Rb2 Qe3 47.Rbc2 Kg7 48.Rcd2 b5 Black's passer decides the game.

If 43.Rc2 Kg7 44.Rcd2 b3 45.axb3 Qxb3 46.Rb2 Qe3 47.Rbc2 b5 48.Bxb5 Qb6 then:

If 49.Rb2 Qc5 50.Rb1 Nh1 51.Kxh1 Qxf2 52.h3 Kh6 53.Rf1 Qd2 54.Be8 Kg5 then:

55.Ba4 Qe2 56.Rd1 f5 57.exf5 gxf5 58.Kh2 Qe5+ 59.Kh1 Qc3 Black wins.
If 49.Rc1 Qxb5 50.hxg3 hxg3 51.Rd2 Qg5 52.Rdc2 Qh5 then:

53.e5 Qh2+ 54.Kf1 Qh1+ 55.Ke2 Qxg2+ 56.Ke3 Qh3 Black wins.
If 53.Kf1 then Black wins after 53...Qh1+ 54.Ke2 Qxg2+ 55.Ke3 Qh3 56.Rg1 g5 gives Black a strong advantage with the extra pawns.

If 42...b3 43.axb3 Qxb3 44.Rd3 then:

If 44...Qb4! 45.Rd7 Kg7 46.h3 b5 then:

If 47.Rb7 Qc5! 48.Bxb5 Nh1!! 49.Kxh1 Qxf2 50.Rd7 then:

if 50...Qc5 51.Be2 Qc6 52.Rd8 Kf6 53.Bd1 Qc3 54.Rd7 Ke5 55.Kh2 Kf4 56.Ba4 Qc4 57.Rxf7+ Ke3 58.Be8 Qb3 then:

59.Rd7 Qb8+ wins the Bishop.
59.Re7 Kf2 60.Rxe6 Qd1 61.Ra6 Qg1#.
59.Kg1 Qb1+ 60.Kh2 Kf2 61.Rf8 Qg1#.

50...Qe1+ 51.Kh2 Qb1 52.Be2 g5 53.Bc4 Qb2 Black will not have to work much harder to win.

If 47.Rdd2 Qc5! 48.Rd1 b4 49.Rdd2 Qe3! then:

50.Rd3 then after 50...Qa7 51.Rd1 Nh1 52.Kxh1 Qxf2 53.Rb1 Qd2 54.Bc4 Qc2 Black wins a piece and the game.
If 50.Rd1 b3 then:

If 51.Rb1 Nh1 52.Kxh1 Qxf2 53.Bc4 b2 then:

54.e5 then:

Qc2 55.Bd3 Qc1+ 56.Kh2 Qf4+ 57.Kg1 Qd4+ wins the Bishop and gives White a good excuse to resign.
54.Bb3 Qc5 55.Ba2 Qc1+ Black will wait patiently for the Rook to take the Queen.

If 51.Rd3 Qc5 52.Rxb3 Nxf1 then:

53.Rb1 Ng3 54.Rd1 Qa7 55.Rb1 Nh1 gives Black the exchange and victory.
53.Kxf1 loses immediately to 53...Qc4+.

44...Qb6 45.Rdd2 Qe3 46.Rc2 Kg7 47.Ra2 Nxf1 48.Rae2 Qd3 gives Black an extra pawn, but it will take a teensy bit more to convert it to victory.

40...Qxc5

Black just runs through the roadblock.

41.Rxf7+

If 41.Rdd2 Kh6 42.Rc2 Qe3 43.Rcd2 then:

If 43...e5 44.Rd3 Qb6 45.Rdd2 f5 46.exf5 gxf5 then:

47.Rde2 e4 48.fxe4 Nxe2+ 49.Bxe2 fxe4 is an easily win for Black.
47.Rc2 e4 48.Bb5 b3 49.axb3 e3 50.hxg3 exf2+ is crushing.

43...f5 44.exf5 gxf5 45.Rd3 Qc5 46.Rdd2 e5 leaves Black on the cusp of victory.

41...Kh6 42.Rxb7

This could be a harikari move rather than a mistake that allows the game to end immediately.
If 42.Bd3 Nh1!! 43.Kxh1 Qxf2 44.h3 Qxa2 45.Rxb7 b3 still wins for Black, but a few moves more would be played before White resigns. As long as the Rook is on the on the b-file and the Bishop on the b1/d3 diagonal, Black cannot safely promote the pawn. That would equire an extended "struggle" for which White may have no taste.

BLACK: Le Quang Liem

WHITE: Luka Lenic
Position after 42.Rf7b7:p

42...Nh1!! 0-1

43.Kxh1 Qxf2 44.h3 Qxf1+ leaves Black an equivalent of a minor piece to the good.
Lenic resigns.

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Jack Rabbit

(1000+ posts) Send PM | Profile | Ignore

Sun Feb-13-11 06:08 PM
Response to Reply #1

3. Bundesliga 1011, Rounds 8 & 9, Germany

Eppingen, Germany
Photo by Peter Schmelzle in Wikipedia (Creative Commons License, Attribution/Share Alike)

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Jack Rabbit

(1000+ posts) Send PM | Profile | Ignore

Sun Feb-13-11 06:50 PM
Response to Reply #3

5. Nielsen - Renner, Eppigen, Round 9

Peter Heine Nielsen
Photo by Frank Hoppe in Wikimedia Commons (Public Doamin)

Peter Heine Nielsen (Baden-Baden) - Christoph Renner (Munich)
Bundesliga 1011, Round 9/Board 3
Eppingen, 6 February 2011

Hollander Game: Leningrad Defense

1.d4 f5 2.g3 Nf6 3.Bg2 g6 4.Nf3 Bg7 5.0-0 0-0 6.c4 d6 7.Nc3 c6

If 7...Qe8 8.d5 Na6 9.Rb1 Bd7 10.Nd4 c6 then:

If 11.b3 Nc7 12.Bb2 then:

If 12...Rb8 13.b4 then:

13...e5 14.dxe6 Nxe6 15.e3 Qf7 16.Qb3 Nxd4 17.exd4 b5 18.cxb5 Be6 19.Qd1 Bc4 20.Bxc6 Bxf1 21.Qxf1 gives White a small advantage thaks to his queenside pawns (Cebalo-Jacimovic, Op, Pula, 1985).
13...cxd5 14.cxd5 Qf7 15.Qb3 g5 16.e3 Qh5 17.Qd1 Qh6 18.Qe2 f4 is equal (Tregubov-Rendle, Masters, Gibraltar, 2005).

12...c5 13.Nc2 b5 14.cxb5 Nxb5 15.Nxb5 Bxb5 16.Na3 Bd7 17.Nc4 g5 18.e3 f4 19.e4 draw (Nielsen-Kramnik, Cadets World Ch, Singapore, 1990).

If 11.b4 then:

If 11...Nxb4 12.Rxb4 c5 13.Rxb7 cxd4 14.Nb5 Qc8 then:

15.Rc7 Qb8 16.Rxd7 Nxd7 17.Nxd4 Bf6 18.e4 fxe4 19.Bh6 Rf7 20.Bxe4 Nc5 21.Bg2 Qb4 22.Ne6 draw (Kaufman-Schwab, Op, Mt. Vernon, 2001).
If 15.Rxa7 Qxc4 16.Rxa8 Rxa8 17.Nxd4 Rxa2 18.Qd3 Qxd3 19.exd3 Kf7 20.Re1 Ra1 then:

21.Kf1?! Ng4 22.Nf3 Bb5 23.h3 Bxd3+ 24.Kg1 Nf6 White is tied up in knots (McConnell-McNally, Scottish NCL, Edinburgh, 1994).
21.h3! Ng8 22.Nc6 Bc3 23.Rf1 Bc8 is equal (Fritz 6.0).

If 11...c5 12.Ne6 cxb4 13.Nxf8 Kxf8 14.Nb5 Bxb5 15.cxb5 Qxb5 16.a3 Qc4 then:

17.axb4 Nxb4 18.Bd2 Nbxd5 19.Rxb7 Ne4 is equal (Chernosvitov-Beim, Voskresensk, 1992).
17.Bb2 bxa3 18.Bxa3 Ne4 19.Rxb7 Nc3 20.Qd2 threatening 21.Qg4! gives White the advantage (Fritz 6.0).

If 7...Nc6 8.d5 then:

If 8...Ne5 9.Nxe5 dxe5 then:

If 10.e4 then:

If 10...f4 11.gxf4 exf4 12.e5 Ng4 13.e6 Ne5 14.Re1 then:

If 14...Nxc4 15.Re4 Nd6 16.Rxf4 b6 then:

17.h4 Bb7 18.h5 Rxf4 19.Bxf4 Qf8 20.Bg3 Qf5 21.hxg6 Qxg6 22.Rc1 gives White a fair advantage in space (Aaberg-Kobalia, Masters, Gibraltar, 2006).
17.Qa4 Bb7 draw (Tunik-Najer, Russia, Togliatty, 2001).

14...f3 15.Bf1 b6 16.Re4 h6? 17.Bf4! Rf5 18.Qe1 White threatens to win the Knight at e5 (Cummings-Steadman, Corres, 1996).

10...e6 11.Bg5 h6 12.Bxf6 Qxf6 13.Qb3 exd5 14.cxd5 is equal (Magnusson-Solmundarson, Op, Reykjavik, 1970).

If 10.Qb3 h6 11.c5 Kh8 12.Rd1 g5 13.Bd2 then:

13...a6 14.Na4 Qe8 15.Ba5 Bd7 16.Nc3 b6 17.cxb6 cxb6 18.Qxb6 Rb8 19.Qc5 Rxb2 20.Qa3 (Tukmakov-Reinderman, Op, Wijk aan Zee, 1993).
14...f4 15.Ba5 e4 16.d6 exd6 17.cxd6 e3 18.f3 gives White more freedom and space (Yakovich-Potapov, Russian Ch, St. Petersburg, 1998).

13...e4 14.Be1 Ng4 15.Nb5 a6 16.Nd4 gives White a healty advantage in space (Landa-Potapov, Russian Ch, St. Petersburg, 1998).

If 8...Na5 9.Qd3 c5 10.b3 a6 11.Bb2 Rb8 then:

12.Nd2 Ng4 13.Nd1 Ne5 14.Qc2 f4 15.gxf4 Rxf4 16.e3 Bf5 17.e4 Bg4 is equal (Barendregt-van der Weide, Op, Wijk aan Zee, 1970).
12.Rab1 b5 13.Nd2 Ng4 14.e3 Qe8 15.Ba1 g5 16.cxb5 axb5 17.b4 Nc4 (M. Petursson-Ostenstad, IT, Gausdal, 1990).

8.Rb1

If 8.d5 e5 9.dxe6 Bxe6 10.Qd3 Na6 then:

If 11.Bf4 Ne4 12.Nxe4 fxe4 13.Qxe4 Nc5 14.Qc2 Bf5 then:

If 15.Qd2 Ne4 16.Qb4 Qb6 17.Qxb6 axb6 then:

18.Nh4 Bxb2 19.Rab1 Rxa2 20.Nxf5 gxf5 21.Bxe4 fxe4 22.Bxd6 Rf7 is equal (de Boer-Timmerman, Dutch ChT, Holland, 1992).
18.Rad1 Rxa2 19.Nd4 Rxb2 20.Bxe4 Bxe4 (Yrjola-Barbero, World ChTU26, Mendoza, 1985).

15.Qd1 Bxb2 16.Bxd6 Bxa1 17.Bxf8 Qxd1 18.Rxd1 Rxf8 19.Rxa1 Rd8 20.Kf1 gives White an extra pawn (Brinck-Claussen-Timmerman, Op, Vanlose, 1991).

11.Ng5 Bc8 12.Bf4 Nh5 13.Qxd6 Nxf4 14.Qxf4 h6 15.Nf3 g5 16.Qc1 Be6 17.h4 g4 18.Qe3 Re8 gives Black a fine game (Roeder-Babu, Op, Calcutta, 2000).

If 8.Qb3 Kh8 9.Rd1 then:

If 9...Na6 then:

If 10.Qa3 Nc7 then:

11.d5 Bd7 12.Qb3 Rb8 13.Be3 c5 14.a4 b6 15.Nb5 a6 16.Nxc7 Qxc7 (Plomp-Kamenets, Corr, 2002).
11.b4 Be6 12.Nd2 Nd7 13.e3 Nb6 14.Bf1 Qe8 15.c5 Nbd5 16.Nc4 Qd7 is equal (Bets-Malaniuk, Russia Cup, Tula, 2001).

10.d5 Nc5 11.Qc2 cxd5 12.Be3 Nce4 13.Nxd5 Ng4 14.Nd2 Nxe3 15.Nxe3 Nf6 is equal (Marovic-Lombardy, IT, Banja Luka, 1976).

If 9...Qc7 10.d5 Na6 11.Nd4 then:

11...Nc5 12.Qc2 e5 13.dxe6 Qe7 14.Bf4 Ne8 15.Qd2 Nxe6 16.Nxe6 Bxe6 17.b3 gives White the advantage in space (Uddenfeldt-Buchal, 6N ChT, Denmark, 1973).
11...Bd7 12.a3 Rac8 13.Qa2 Nc5 14.Be3 a5 15.h3 a4 16.Rac1 Nh5 17.b4 gives White a slim advantage in space (Wang Yaoyao-Zhao Xue, Chinese ChT, Suzhou, 2001).

8...Ne4

If 8...a5 9.d5 Bd7 10.Nd4 then:

10...Qb6 11.Be3 Qa6 12.b3 Ng4 13.Bg5 Qb6 14.e3 gives White a small advantage in space (Gustafsson-Mahjoob, Rpd, Mainz, 2010).
10...Ng4 11.h3 Ne5 12.b3 Na6 13.Kh2 Nc7 14.f4 give White the advantage in space (Gustafsson-Vallejo, Euro Ch, Plovdiv, 2008).

9.Qc2

If 9.Nxe4 fxe4 10.Nd2 d5 11.e3 then:

If 11...Be6 12.b4 b5 13.cxb5 cxb5 14.a4 bxa4 15.Qxa4 Nd7 16.Qa2 Bf7 17.Nb3 Nb6 18.Na5 then:

18...Qd7 19.Ba3 e5 20.dxe5 Bxe5 21.Bb2 Bxb2 22.Qxb2 Rac8 is equal (Beliavsky-E. Agrest, EU ChT, Batumi, 1999).
18...e6 19.Bd2 Be8 20.b5 Rf7 21.Rfc1 a6 22.bxa6 Rxa6 23.Qb2 Nd7 (Tallaksen-Reinderman, IT, Gaudsdal, 2005).

11...Nd7 12.b4 a6 13.Qb3 e6 14.cxd5 cxd5 15.Bb2 b5 is equal (Bu Xiangzhi-Nakamura, Rpd, Cap d'Agde, 2010).

10.Ng5 d5 11.Be3 h6 12.Nh3 g5 13.Qb3 Qb6 14.Qa3 Bf6 is equal as Black should have no trouble completing his development (Lentrodt-Beim, Op, Bad Wiessee, 1997).

9...Nxc3 10.bxc3 c5?! (N)

The previous game from this position saw Black strike at the center with better prospects.
If 10...e5 11.Rd1 e4 12.Ng5 h6 13.Nh3 g5 14.f3 is equal (Kramnik-Nakamura, IT A, Wijk aan Zee, 2010).

11.dxc5!

White has many good options.
If 11.Ng5! Rf6 12.dxc5 dxc5 13.Rd1 Qe8 14.Bd5+ gives White a greatly superior game.

11...dxc5 12.Ng5 Nc6 13.Bd5+ Kh8 14.Be3 Bf6 15.Qc1 Ne5?!

Black drops a pawn.
15...Qc7 16.Bxc5 Nd8 17.Bd4 e5 18.Be3! gives White the advantage in space and well-protected pieces.

BLACK: Christoph Renner

WHITE: Peter Heine Nielsen
Position after 15...Nc6e5

16.Bxc5

Of course.

16...Qc7 17.Bd4 Nc6?!

Black is reduced to having two kinds of moves:
1. Bad; and
2. Worse.
If 17...Nxc4? then:

If 18.Nf7+!! Rxf7 19.Bxf7 e5 20.Bd5 then:

20...g5 21.Rb4 Na5 22.Be3 f4 23.Bd2 Be7 24.Ra4 gives White the exchange, but Black has more space.
20...Nd6 21.Be3 Bd7 22.c4 Bc6 23.Rd1 Bxd5 24.cxd5 White has a passed pawn and command of the queenside.

If 18.Bxc4? Qxc4 then:

19.Qf4 Qxa2 20.Qc7 Bxd4 21.cxd4 Re8 is equal.
19.Qe3!? Kg8 20.Rb2 b6 21.Rd1 Qc6 gives Black a slight edge in space.

18.Bxf6+!

White cracks Black's center wide open.

18...exf6 19.Nf3!?

White wins quicker after 19.Qa3 Re8 20.Nf7+ Kg7 21.Rfe1 Rb8 22.Nd6 whne he has the initiative and a huge advantage in space.

19...Re8!?

The threat to White's e-pawn is too easily paried to take seriously.
Better is19...Ne5 20.Nd4 Rd8 21.Qh6 Rb8 22.Rfd1 Bd7 23.Qh4 forces Black's King out of his hiding place to protect the hindmost f-pawn.

20.Nd4 Ne5

If 20...Bd7 21.Nb5 Qe5 22.Qa3 then:

22...Be6 23.Qd6 Bxd5 24.cxd5 Na5 25.Rfd1 Red8 26.Qb4 gives the Knight no safe square and forces Black to weaken his queenside by playinng 26...b6.
If 22...Nd8? then White wins after 23.Nd6! Re7 24.Nxb7 Bc6 25.Na5.

20...Nxd4 21.cxd4 Rb8 22.Bf3 g5 23.Qc2 b6 24.c5! leaves Black unable to take the pawn (24...bxc5 25.Rxb8 Qxb8 26.Rb1 Qc7 27.Rb5 c4 28.Rc5).

21.Rd1 Rb8

If 21...a6 22.Qe3 Rd8 23.Nb3 then:

If 23...Nc6 then:

24.Qc5 Rb8 25.Nd4 Qe7 26.Qb6 leaves Black's position crumbling like ancient ruins.
24.Nc5 Na5 25.Bg2 Rf8 26.Nd3 Nxc4 27.Qc5 threatens the Knight.

If 23...Nxc4? then White wins after 24.Bxc4! Rxd1+ 25.Rxd1 Qxc4 26.Rd8+.

22.Qa3 a6

22...b6 23.Nb5 Qe7 24.Qxa7 Qxa7 25.Nxa7 leaves White up by two pawns and winning.

23.c5!

White's pawns are paralyzed.
If 23.Qb4 Bd7 24.f4 Nc6 25.Qb6 Rec8 26.c5 Qxb6 27.Rxb6 leaves Black struggling to breathe.

23...Bd7 24.c4 Rec8?

The threat to take the foremost c-pawn is desperation and nothing else.
If 24...Bc6 25.f4 Nd7 26.Nxc6 bxc6 27.Rxb8 Nxb8 28.Bf3 gives Black faint hopes of salvation.

BLACK: Christoph Renner

WHITE: Peter Heine Nielsen
Position after 24...Re8c8

25.Ne6!

White delivers the knockout punch. The center opens up for White heavy pieces while Black's are under constant fire and running for cover.

25...Bxe6 26.Bxe6 Re8

No better is 26...Rd8 27.Rxd8+ Rxd8 28.Bd5 Rb8 29.Qe3.

27.Rd6 Re7 28.Rbd1 Rbe8 29.Bd5 Nd7 30.c6 bxc6 31.Bxc6

If 31...Rxe2 32.Bxd7 Re1+ 33.Kg2 then:

33...Qxc4 34.Qd3 Qxd3 35.R1xd3 leaves White a piece to the good.
33...Rxd1 34.Rxd1 Rg8 35.Qxa6 leaves with up a Bishop.

Herr Renner resigns.

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Jack Rabbit

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Sun Feb-13-11 09:15 PM
Response to Reply #3

6. Gashimov - Najer, Wattenscheid, Round 8

Vugar Gashimov
Photo by Stefan64 from Wikimedia Commons (Creative Commons License, Attribution/Share Alike)

Vugar Gashimov (Bremen) - Evgeny Najer (Wattenscheid)
Bundesliga 1011, Round 8/Board 1
Wattenscheid, 5 February 2011

Grand Spanish Royal Game: Clam Defense

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0-0 Be7 6.d3 d6 7.c3 0-0 8.Re1 Nd7

For moves and variation through here, see Carauana-Korchnoi, Masters, Gibraltar, 2011.

9.d4

If 9.Be3 then:

If 9...Nb6 10.Bb3 Kh8 then:

11.Nbd2 f5 12.Bxb6 cxb6 13.Bd5 g5 14.h3 g4 15.hxg4 fxg4 16.Nh2 gives White a small advantage in space (Carauana-Korchnoi, Masters, Gibraltar, 2011).
11.d4 Bg4 12.h3 Bh5 13.Nbd2 exd4 14.cxd4 d5 is equal (Dagkakis-Kapnisis, Greek Ch, Rhodes, 2008).

9...Bf6 10.Nbd2 Ne7 11.d4 Ng6 12.Nf1 Nf4 13.Ng3 g5 14.Nf5 gives White the advantage in space (Duras-Maroczy, IT, San Sebasti�n, 1911).

9...Bf6

9...exd4 10.cxd4 Nb6 11.Bc2 Bg4 12.d5 Bxf3 13.Qxf3 Nd4 14.Qd1 Nxc2 15.Qxc2 c6 16.dxc6 gives White a clear advantage in space (Papadopoulos-Mastrovasilis, Greek Ch, Rhodes, 2008).

10.Be3

10.Bc2 Nb6 11.h3 Bd7 12.b3 exd4 13.cxd4 Nb4 14.Nc3 Nxc2 15.Qxc2 c6 16.Ba3 gives White a slight advantage in space (Shirov-Short, IT, Dos Hermanas, 1997).

10...Nb6 (N)

If 10...b5 11.Bc2 then:

11...Ne7 12.Nbd2 c5 13.dxc5 Nxc5 14.Nf1 Qc7 15.Ng5 g6 16.Qd2 Bb7 gives White a slim advantage in space (Aronin-Boleslavsky, Soviet Ch, Leningrad, 1947).
11...Bb7 12.Nbd2 Re8 13.d5 Ne7 14.b3 c6 15.c4 g6 16.b4 gives White a small advantage in space (Svetushkin-Harikrishna, Aeroflot Op, Moscow, 2007).

11.Bxc6

White has a fair advantage in space.
If 11.d5!? Nxa4! 12.Qxa4 Ne7 13.Nbd2 Ng6 14.Rad1 b6 is equal.

11...bxc6 12.Nbd2

12.dxe5 dxe5 13.Bc5 Qxd1 14.Rxd1 Re8 15.b3 gives White a small advantage in space.

12...a5!?

Black is either trying to pre-empt White on the queenside or seeking an initiative of his own.
If 12...Re8 13.dxe5 then:

If 13...Bxe5 14.Nxe5 Rxe5 then:

15.b4! Re6 16.Qh5 Rb8 17.a3 Qf6 18.c4 gives White a comfortable advantage in space.
15.a4!? a5! 16.b4 Re6 17.Qc2 gives White a small advantage in space.

13...dxe5 14.Qc2 Qe7 15.c4 Be6 16.Red1 Red8 17.c5 gives White the initiaitve.

13.Qc2!?

Black has made a premature encroachment on the queenside, thus White should expected to seek action in the center.
If 13.dxe5 dxe5 14.c4 Be6 then:

15.c5 Nd7 16.Qa4 Rb8 17.Qc2 Qe7 18.b3 Rb5 19.Nc4 gives White a slight advantage in space.
15.Bc5 Re8 16.Qc2 Nd7 17.Ba3 c5 18.Rad1 c6 is equal.

13...a4?!

Black presses on with his queenside initiative.
An attempt by Black to open the center with 13...exd4?! is rebuffed by 14.cxd4! Bb7 15.Rac1 Re8 16.e5 Be7 17.Ne4 when White has a comforatable advantage with a better center.
Better is is to shore up the foothold in the center he already has: 13...Qe7! 14.dxe5 Bxe5 15.Nxe5 Qxe5 16.Nf3 Qh5 17.Nd4 is equal.
Another way to shore up the center is 13...Re8?! 14.dxe5 Bxe5 15.Nxe5 Rxe5 when:

16.Nf3 Re8 17.e5 Nc4 18.Bf4 d5 19.Ng5 gives White the initiative.
16.b4 Re8 17.a3 Qe7 18.Bf4 Qh4 is equal.

14.dxe5!

On the other hand, White is more than ready to open the center.

14...Bxe5 15.c4

White should press on in the center.
15.Nxe5! dxe5 16.c4 Bg4 17.Qc3 Nd7 18.f3 Be6 19.f4 gives White a fair advantage in space.

15...Nd7 16.Nd4!?

It's still not too late to play 15.Nxe5.
font color="red"]16.Nxe5 Nxe5 17.c5 Qh4 18.Bd4 Be6 19.g3 gives White a small advantage in space.

16...Bb7!

The game is equal.
Even better is 16...c5! 17.Nc6 Qf6 18.Nxe5 Nxe5 19.Rab1 Nc6 gives Black a small edge in space.

17.Rad1 Bxd4 18.Bxd4 c5 19.Bc3

The game remains equal.
19.Be3!? Qf6! 20.Re2 Rfe8 21.Rc1 gives Black a small edge in space.

19...Re8 20.Nf1 f6!?

This move hinders the development of the Black Queen to the kings where it swill soon be needed.
If 20...Qg5 21.f3 f5 22.Ng3 fxe4 23.Nxe4 Qg6 with equality.

BLACK: Evgeny Najer

WHITE: Vugar Gashimov
Position after 20...f7f6

21.f3!

Before taking specific action, White overprotects his e-pawn. This move is possible because Black can no longer bring his Queen to the kingside.

21...Qe7

21...Ne5 22.Ne3 Qe7 23.f4 Ng6 24.Nd5 Bxd5 25.exd5 gives White a slight initiative.

22.Ne3 Qf7 23.b3 axb3 24.axb3 Ne5 25.Nf5 Bc8 26.Ng3 Nc6

26...Bd7 27.Ra1 Reb8 28.f4 remains equal.

27.f4 Bb7 28.Re3 Re6 29.Rf1 Qe8 30.Qd1 Ra2!?

The Black Rook is, as Chairman Mao would say, a paper tiger. It looks ferocious on the seventh rank, but in fact has nothing supporting it and nothing to do but sit there waiting to be chased away.
If 30...Kh8 31.Rfe1 Ra2 32.R1e2 Rxe2 33.Rxe2 remains equal.

31.Nh5 Nd4?

Black announces his intention to take the e-pawn.
If 31...Kf8 32.Rg3 Rxe4 33.Bxf6 then:

If 33...Ree2 34.Bxg7+ Kf7 35.Qd5+ Qe6 36.Qxe6+ Rxe6 gives White an extra pawn and Black small chances of surviving.
If 33...gxf6? 34.Nxf6 then:

If 34...Qe6 35.Nxh7+ Ke8 36.Ng5 then:

36...Nd4 37.Qh5+ Kd7 38.Nxe6 Ne2+ 39.Kh1 Nxg3+ 40.hxg3 gives White a material advantage equivalent to a minor piece.
36...Qf5 37.Nxe4 Nd4 38.Nd2 Qh7 39.Rf2 gives White a huge material advantage.

If 34...Nd4?? loses immediately to 35.Rg8+!.

BLACK: Evgeny Najer

WHITE: Vugar Gashimov
Position after 31...Nc6d4

32.Bxd4!

White isn't the least bit alarmed.
If 32.Rg3! then:

If 32...Ne2+ (Black forces White to part with his Queen) 33.Qxe2 Rxe2 34.Nxg7 (which in turn forces White to recover material thus) 34...Qe7 35.Nxe6+ Kh8 36.f5 then:

36...Bxe4 37.Rf4 Bxf5 38.Nxc7 Re1+ 39.Bxe1 Qxe1+ 40.Rf1 gives White the material advantage equivalent to a pawn.
If 36...Rc2!? 37.Ra1! then:

37...Bxe4 38.Re1 Rxc3 39.Rxc3 Bxf5 40.Rce3 leaves White threatening 41.Nxc7!! Qxc7 42.Re8+! Ke7 43.R(either)e7+ winning the Queen.
37...Rxc3 38.Rxc3 Qe8 39.Re1 Qa8 40.Rce3 leaves White with a material advantage equaivalent to two pawns.

32...Qe7? 33.Bxd4 cxd4 34.Nxg7 Qxg7 35.Rxg7+ Kxg7 gives White a material advantage equivalent to two pawns.

32...cxd4 33.Rg3!

In fact, he tacitly tells White that it's alright with hime if the pawn is just taken.
If 33.Qg4?! then:

33...g6! 34.f5 Kh8 35.fxe6 gxh5 36.Qf5 dxe3 37.Qxf6+ Kg8 38.Qg5+ Kh8 etc. draws by repetition as Whits is a piece down.
If 33...Qf7!? 34.Nxg7!! then:

34...dxe3 35.Nxe6+ Qg6 36.Qxg6+ hxg6 37.Re1 Bxe4 38.Rxe3 gives White a strong advantage, but he has to win the game all over again.
If 34...Rxe4 35.Rxe4 Bxe4 36.Nh5+ Qg6 then:

If 37.Qc8+ Kf7 38.Qxc7+ Ke8 39.Ng7+ Kf8 then:

40.Ne6+ Kg8 41.Qd8+ Kf7 42.Qd7+ Kg8 etc. draws.
If 40.Qxd6+? then:

40...Kg8 41.Qd8+ Kxg7 42.Qd7+ Kh6 43.Qh3+ Qh5 gives Black a piece for two pawns with the most advanced passer on the board.
40...Kxg7 41.Qd7+ Kh6 transposes.

If 37.Qe6+ Kf8 38.Qc8+ Kf7 39.Qxc7+ then all roads lead to perpetual check:

If 39...Kf8 40.Qxd6+ Ke8 41.Qe6+ Kd8 42.Qd6+ then:

If 42...Kc8 43.Qc5+ Kb7 44.Qe7+ Kc8 etc. draws.
42...Ke8 43.Qe6+ Kd8 etc. draws.

39...Ke8 40.Ng7+ Kf8 41.Ne6+ Kg8 42.Qd8+ etc. draws.

33...Qf7 34.Rxg7+ Qxg7 35.Nxg7 Kxg7 36.Rf2 Rxf2

36...Ra5 37.b4 Ra8 38.Qg4+ Kf7 39.Qh3 Bxe4 40.f5 leaves White with an easy win.

37.Kxf2 c5

37...Bxe4 38.Qxd4 c5 39.Qc3 Kf7 40.g4 Re7 41.Qd2 leaves Black hopeless.

38.Qg4+ Kf7 39.Qh3 Bxe4 40.f5!

Black is quickly running out of reserve pawn tempi.
If 40.b4!? cxb4 41.f5 then:

41...Re5 42.Qxh7+ Ke8 43.g4 d3 44.Qc7 d2 45.Qxd6 leaves White with a material advantage equivalent to two pawns; White wins the d-pawn after 45...Bd5 46.Qb8+ Kf7 (46...Ke7 47.Qxb4+!) 47.Qa7+ Kg8 48.Qd4!.
If 41...Re7 42.Qxh7+ Ke8 43.Qh8+ then:

43...Kd7 44.Qxf6 d3 45.g4 Bc6 46.Qd4 Re2+ 47.Kg3 leaves White with a material advantage equivalent to two pawns.
43...Kf7 proves insufficient to save the pawn after 44.Qh5+ Kf8 45.Qh6+ Ke8 46.Qxf6

40...Re5 41.Qxh7+ Ke8

BLACK: Evgeny Najer

WHITE: Vugar Gashimov
Position after 41...Kf7e8

42.g4

Generally speaking, White has a won game, but there are some pits into which he can fall.
If 42.Qg6+ Kd7 then:

If 43.Qg7+! then:

If 43...Kc6 44.g4 Bc2 then:

If 45.Qa7! d3 46.Qa4+ Kc7 47.Qa2 then:

47...Re2+ 48.Kf3 Rxh2 then:

49.Kg3 Re2 50.g5 fxg5 51.f6 Kd7 52.Qa7+ Ke6 53.Qg7 Re3+ 54.Kg2 Re2+ 55.Kf1 g4 56.Qe7+ Kf5 57.Qxd6 Kg6 58.f7+ Kxf7 59.Qxc5 Kf6 60.b4 d2 61.Qd6+! wins the Rook.
49.Qa7+ Kc6 50.Qa4+ Kc7 51.Qa5+ Kd7 52.Qc3 d2 53.Qxc2 Kc7 54.Qd1 Rh3+ 55.Ke2 Rh2+ 56.Kd3 wins.

If 47...Kb6 48.Kf3 d5 49.h3 then:

If 49...Bd1+ 50.Kg3 Bc2 51.Kh4 then:

If 51...dxc4 52.bxc4 Re4 53.Qb2+ Kc7 54.Qb5 Re5 55.Kh5 Kd6 56.Qb2 wins.
If 51...Re8 52.cxd5 Rd8 53.b4 cxb4 54.Qc4 then:

54...b3 55.Qb4+ Ka6 56.d6 b2 57.Qxb2 d2 58.Qxf6 d1Q 59.d7+! leaves Black unable to stop the d-pawn from queening.
If 54...Rh8+ 55.Kg3 Ka5 56.d6 b3 57.d7 then:

If 57...Kb6 58.Qc8 then:

58...Rxc8 59.dxc8Q wins.
58...d2 59.Qxh8 d1Q 60.d8Q+ wins.

If 57...Rd8 then 58.Qc7+! wins.

If 49...d4 50.h4 Kb7 51.h5 Re3+ then:

52.Kf4 Re2 53.Kg3 Re3+ 54.Kh4 Re4 55.Qa5 Re2 56.Qb5+ wins for White.
If 52.Kf2? then:

If 52...Bd1! 53.Qa4 Bxg4 then:

If 54.Qb5+ then:

If 54...Ka8 55.Qxc5 Re2+ 56.Kg3 d2 57.Qc8+ Ka7 58.Qc7+ Ka8 etc. draws.
54...Kc8? 55.Qxc5+ Kb7 56.Qd5+ Kc7 57.Qf7+ Kc8 58.Qg8+ wins a piece.

54.Qd7+ Kb8 55.Qb5+ Ka8 transposes and draws.

If 52...Re2+? 53.Kg3 Re3+ 54.Kh4 then:

54...Re2 55.h6 Rh2+ 56.Kg3 Rxh6 57.Qa5 Black's pawns fall like autumn leaves.
54...d2 55.Qxc5+ Kd7 56.Qd5+ Kc7 57.Qxd2 Rxc4 58.Qa5+ Kd6 59.Qd8+ wins.

If 45.Qf7? d3! then:

If 46.Qg8 Kd7 47.Qb8 d2 48.Qb5+ Ke7 49.Qb7+ Kf8 50.Qb8+ etc. draws.
If 46.Qa7 Re2+ 47.Kf3 d2 48.Qa4+ Kc7 49.Qa5+ Kc8 50.Qa6+ then:

If 50...Kc7 51.Qa5+ Kc8 etc. draws.
50...Kd8?? 51.Qxd6+! Ke8 52.Kxe2.

If 45.Qf8? Kd7 46.Qxf6 d3! then:

If 47.Qg7+ Kc6 48.Qg8 Kd7 49.Qf7+ Kc8 50.Qf8+ Kd7 51.f6 d2 52.Qg7+ then:

If 52...Kc6 53.Qf8 d1Q 54.Qc8+ Kb6 55.Qb8+ then:

If 55...Ka6 56.Qa8+ Kb6 57.Qb8+ etc. draws.
If 55...Ka5?? then 56.Qb5#.

52...Kc8 53.f7 Re2+ 54.Kg3 Re3+ 55.Kh4 Rf3 56.f8Q+ Rxf8 57.Qxf8+ Kd7 58.Qf7+ Kd8 59.Qf6+ Kd7 60.Qf7+ etc. draws.

47.h4 d2 48.Qg7+ Kc6 49.Qh8! Re2+!! 50.Kxe2 d1Q+ 51.Kf2 Qd2+ 52.Kg3 Qe3+ 53.Kh2 Qf2+ etc. draws by perpetual check.

43...Re7? 44.Qxf6 d3 45.Ke1 Bxf5+ 46.Kd1 Be4 47.g4 when Black must lose a piece to stop the pawn.

If 43.g4 d3 44.Qf7+ Re7 45.Qxf6 Bb7 46.Qa1 then:

46...Re2+! 47.Kg3 d2 48.f6 Re3+ 49.Kf2 Re1 50.Qxe1 dxe1Q+ 51.Kxe1 then:

51...Ke6 52.g5 Bc6 53.h4 d5 54.h5 d4 is equal.
51...d5 52.Ke2 d4 53.h4 Be4 is equal.

If 46...Bc6? 47.f6! Re2+ 48.Kg3 d2 then:

49.f7! Rg2+ 50.Kf4 Ke7 51.Qg7 Rf2+ 52.Kg3 Rxf7 53.Qg5+ Kd7 54.Qxd2 wins for White.
49.b4 cxb4 50.f7 Re3+ 51.Kf2! Rf3+ 52.Ke2 Rxf7 53.Kxd2 wins for White.

42...Bc2 43.Qc7!

White avoids the last pitfall.
If 43.Qg6+? Kd7 44.Qxf6 d3! then:

If 45.Qf7+ then:

If 45...Kc8 46.Qf8+ Kd7 47.Qg7+ Kc6 48.Qg8 Kd7 49.Qb8 then:

If 49...Re2+ 50.Kf1 d2 51.Qb7+ then:

51...Kd8 52.Qb6+ Kd7 53.Qb7+ Kd8 etc. draws.
If 51...Ke8?? 52.Qc6+ Ke7 then:

White wins by a pai of pretty pawn sacifices: 53.f6+!! Kxf6 54.Qxd6+ Re6 55.g5+!! Kf5 56.Qxd2.
53.Qc7+!? Ke8 54.Qc6+ Ke7 55.Qc7+?? draws while 55.f6+!! wins as above.

49...d2 50.Qb7+ Ke8 51.Qc6+ Kf7 52.Qxd6 Rxf5+ 53.gxf5 d1Q 54.Qe6+ Kf8 55.Qc8+ Kf7 56.Qxc5 Qd2+ 57.Kf3 Bd1+ 58.Kg3 Qg5+ 59.Kf2 Qd2+ etc. draws.

If 45...Re7? 46.Qd5 Re2+ then:

47.Kf1 Rxh2 48.Qe6+ Kc7 49.Qe7+ Kc6 50.Qe4+ Kc7 51.f6! Zunzwang! Black has no safe pawn moves and must fall on his sword. If 51...Bxb3 then 52.Qxd3 Bc2 53.Qd5 and White's f-pawn advances. If 51...Bb1 then after 52.Qe7+ Kc6 53.Qe8+ Kc7 54.f7 White's pawn cannot be stopped and Black's pawn can.
If 47.Kf3? Rxh2 48.Qe6+ then:

48...Kc6! 49.Qc8+ Kb6 50.Qd7 d2 51.Qxd6+ Kb7 52.Qd7+ White must draw by repetition or else Black's pawn queens and wins.
48...Kc7? 49.Qe7+ Kc6 50.Qe4+ Kc7 51.b4 Re2 52.Qd5! wins for White.

45.Qg7+ Kc6 46.Qg8 Kd7 47.Qf7+ Kc6 etc. draws.

43...d3

If 43...Bd1 then Black's pawns fall after 44.Kg3 Bxb3 45.Qxd6 Bxc4 46.Qxf6 Re7 47.Qc6+.

BLACK: Evgeny Najer

WHITE: Vugar Gashimov
Position after 43...d4d3

44.Qxd6!

White has a significant material advantage and Black has no hope of promoting his d-pawn.

44...Re2+ 45.Kf1 Re7 46.Qb8+ Kd7

If 46...Kf7 then White wins the d-pawn after 47.Qd8 Re5 48.h4 Bd1 49.Qd7+.

47.Qb7+ Kd8 48.Qa8+ Kd7 49.Qd5+

Also good is 49.h4 Re5 50.Qb7+ Kd8 51.Qc6 d2 52.Qd6+.

49...Ke8 50.g5 fxg5 51.f6 Re2

51...d2 drops a piece to 52.Qxd2.

52.Qg8+ Kd7 53.Qh7+ Ke6 54.f7 1-0

The only way to stop the pawn is to lose the Rook (54...Rxh2 55.Qxh2 Kxf7).
Evgeny Yuryevich resigns.

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Jack Rabbit

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Tue Feb-15-11 12:28 PM
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7. Update (Tuesday): Cheparinov defeats Le in Round 8, ties for 1st

Bulgarian grandmaster Ivan Cheparinov, who once worked as the second to former FIDE champion Veselin Topalov, defeated tournament leader Le Quang Liem of Vietnam in the eighth round of the Aeroflot Open in Moscow today in 45 moves.

Grandmaster Le entered the round a full point ahead of the field after taking down Mikhail Kobalia in Round 7, but today's loss to Cheparinov puts the Bulgarian GM in a first place tie with Le at six points each out of eight possible.

Tomorrow's ninth and final round begins at 3 pm Moscow Time (4 am PST). The action can be followed with a live broadcast at the official tournament website.

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Jack Rabbit

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Wed Feb-16-11 12:33 PM
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9. Update (Wednesday): Aeroflot Open Ends in 3-way tie

Details this weekend.

Today's results on the top boards:

Cheparinov 0-1 Vitiugov
R. Mamedov �-� Le Quang Liem
Tomashevsky 1-0 Sjugirov
Kasimdzhonov �-� Yu Yangyi
Rodshtein �-� Khismatullin

Final standings among those entering Round 9 with 5� points or more, without regard to tie breaks:

Le Quang Liem - 6�
Nikita Vitiugov - 6�
Evgeny Tomashevsky - 6�
Ivan Cheparinov - 6
Rustam Kasimdzhanov - 6
Denis Khismatullin - 6
Rauf Mamedov - 6
Max Rodshtein - 6
Yui Yangyi - 6
Sanan Sjugirov - 5�

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