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Reply #3: Nakamura - Bruzón, Round 6, Dresden [View All]

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Jack Rabbit Donating Member (1000+ posts) Send PM | Profile | Ignore Mon Dec-08-08 05:42 AM
Response to Reply #1
3. Nakamura - Bruzón, Round 6, Dresden



Hikaru Nakamura
Photo: ChessBase.com


Hikaru Nakamura (United States) - Lázaro Bruzón (Cuba)
38th Olympiad (General Competition), Round 6/Board 2
Dresden, 19 November 2008

Semi-Slav Queen's Gambit: Marshall Opening


1.d4 d5 2.c4 c6 3.Nf3

  • 3.Nc3 e6 4.e4 dxe4 5.Nxe4 Bb4+ 6.Bd2 Qxd4 7.Bxb4 Qxe4+ 8.Be2 Nd7 9.Nf3 c5 10.Bc3 Ngf6 11.Qd6 Qc6 12.Qg3 0-0 13.Rd1 Nh5 14.Qh4 g6 15.Rxd7! Qxd7 16.g4 Qd8 17.gxh5 Qxh4 18.Nxh4 e5 19.hxg6 hxg6 20.Rg1 Re8 21.Nf3 f6 22.Rxg6+ Kf7 23.Rg3 Bd7 24.Nd2 Rh8 25.Ne4 b6 26.Rf3 f5 27.Bxe5 Rh4 28.Nd6+ Black resigns (Marshall-Schlechter, IT, Monte Carlo, 1902).

3...Nf6 4.Nc3 dxc4 5.a4 e6 6.e4

  • 6.e3 c5 7.Bxc4 is a typical Open Queen's Gambit position.

6...Bb4 7.e5

  • If 7.Bg5 b5 8.e5 h6 9.exf6 hxg5 10.fxg7 Rg8 then:
    • If 11.h4 g4 12.Ne5 Rxg7 13.h5 f5 14.Be2 Qg5 then:
      • 15.axb5 cxb5 16.d5 Bb7 17.dxe6 Bxg2 18.Rg1 Bb7 Gives Black an extra pawn, but White has potential for counterplay (Lautier-Thorsteinsson, IT, site unrecorded, 1986).
      • 15.Kf1 Bb7 16.axb5 Bxc3 17.bxc6 Nxc6 18.bxc3 Nxe5 19.dxe5 Bd5 20.Qa4+ Kf8 21.Bxc4 Qd2 22.Bxd5 Qxd5 23.Qd4 Qxd4 24.cxd4 Rd7 25.Ra6 Rad8 26.h6 gives White the advantage (Kramnik-Yusudin, IT, Pamplona, 1993).
    • 11.g3 Bb7 12.Bg2 Nd7 13.h4 gxh4 14.Rxh4 Qf6 15.Kf1 a6 16.Ne5 Nxe5 17.dxe5 Qxe5 18.axb5 axb5 19.Rxa8+ Bxa8 20.Qa1 Bb7 21.Qa7 Bxc3 22.bxc3 Qxc3 23.Qb8+ Ke7 24.Qxb7+ Kf6 25.Rf4+ Kg5 26.Qe7+ f6 27.Bh3 Black resigns in a mating net (Yermolinsky-Monin, Leningrad, 1987).

7...Nd5 8.Bd2 b5 9.axb5 Bxc3 10.bxc3 cxb5 11.Ng5 Nc6

  • If 11...Bb7 12.Qh5 Qe7 13.Be2 Nd7 then:
    • If 14.Bf3 h6 15.Ne4 0-0 16.h4 f6 17.Nd6 fxe5 18.dxe5 then:
      • 18...Rf5? 19.Nxf5 exf5 20.0-0 Qxe5 21.Rfe1 Qf6 22.Re8+ Nf8 23.Rxa8 Bxa8 24.Rxa7 gives White the material advantage and greater activity.(Sebenik-Withersohn, IT, Brno, 2006).
      • Black could maintain the advantage with 18...Nc5! 19.0-0 Nd3 20.Ra5 a6.
    • 14.0-0 h6 15.Ne4 Nf4 16.Bxf4 Bxe4 17.Qg4 Bd5 is equal (Dreev-Dokhoian, IT, Tallinn, 1986).

12.Qh5

  • 12.h4 f6 13.exf6 Nxf6 14.Be2 0-0 15.Qb1 a6 gives Black an extra pawn and more freedom (Pentala-Popov, Aeroglot Op, Moscow, 2007).

12...Qe7 13.Ne4!?

  • Black has an extra pawn and more activity; White's extra space is too little to compensate.
  • If 13.Be2 b4 14.0-0 h6 15.Ne4 bxc3 then:
    • If 16.Bc1 Ncb4 17.Bxc4 0-0 then:
      • If 18.Bg5 f6 19.Bc1 f5 20.Nd6 a5 is unclear: Black has an extra pawn, which is advanced and passed, but White has more space (Ngoc Trongson Nguyen-Kobalia, City Open, Moscow, 2008).
      • 18.Bxd5! exd5 19.Nxc3 gives White the advantage in space.
    • 16.Bg5! Qd7 17.Nd6+ Kf8 18.Be3 Bb7 19.Bxc4 Ncb4 is unclear: Black has an extra pawn, but White has more space.

13...0-0 14.Bg5

  • If 14.Nd6 Rb8 15.Be2 b4 16.cxb4 then:
    • If 16...Nxd4 17.Ra4 Nxe2 18.Kxe2 c3 Black's c-pawn is a positional advantage.
    • 17.Rc1 c3 18.Bg5 f6 19.Bd3 Nf5 20.Nxc8 Rfxc8 Black continues to enjoy an extra pawn.

14...f6 15.exf6 gxf6 16.Bh6

  • In spite of being at a disadvantage, White continues to defend actively.
  • 16.Bc1?! f5 17.Ng5 Nxc3 18.Ba3 b4 19.Bb2 Nxd4 gives Black a second extra pawn.

16...Rd8 17.Be2

  • If 17.Rb1? a6 18.Qg4+ Kh8 19.Qe2 e5 20.f3 exd4 21.cxd4 Re8 22.Kf2 f5 Black wins the d-pawn by 23.Ng5 Qxe2+ 24.Kxe2 Nxd4.
  • If 19.Qh5 then Black wins after 19...e5 20.dxe5 f5 21.Ng3 Qxe5+.

17...e5 18.0-0

  • If 18.dxe5 then after 18...Qxe5 19.Qxe5 Nxe5 20.0-0-0 Bb7 Black has an extra pawn and the better center.

18...Qf7 19.Qh4!?

  • White seeks counterplay on the kingside.
  • If 19.Qxf7+ Kxf7 20.dxe5 Nxe5 then:
    • 21.Bh5+ Ke7 22.Be3 Nxe3 23.fxe3 f5 24.Ng3 Rd3 leaves Black a pawn to the good with more activity.
    • If 21.f4 Nd3 22.Bf3 Bf5 then:
      • 23.Ng3 Kg6 24.Bg5 Bg4 25.Bxg4 fxg5 gives White the advantage in the center and the queenside.
      • 23.Bh5+ Ke7 24.Ng3 Bg6 25.Bf3 a5 gives Black a winning edge in space and activity.

19...Bf5?!

  • Black develops a piece and attacks White's centralized Knight, but the Knight is already defended and the maneuver is fruitless.
  • After 19...exd4 20.Bf3 Be6 21.Nc5 Bf5 22.cxd4 a5 Black maintains a distinct advantage in space.

20.Ra6

  • With the removal of the Knight at c6, the Rook can navigate to the center or even through it to the kingside.
  • If 20.Bh5 Bg6 21.Ra6 then:
    • 21...Rac8 22.Bxg6 Qxg6 23.dxe5 fxe5 Black still has an extra pawn.
    • If 21...Bxh5?? then after 22.Rxc6! exd4 23.Nxf6+ Nxf6 24.Rxf6! White wins a piece

20...Bxe4 21.Rxc6!

  • After 21.Qxe4 Nxc3 22.Qg4+ Qg6 23.Rxc6 exd4 24.Qxg6+ hxg6 Black's advanced queenside pawns are an advantage.

21...Nf4 22.Rxf6 Nxe2+

  • Black is aware that he has not won a piece.

23.Kh1 Qb7

  • 23...Bxg2+? 24.Kxg2 Qd5+ 25.f3 Kh8 26.Rg6 is equal.

24.Qg5+ Bg6?

  • Black throws away his advantage.
  • 24...Kh8! 25.f3 Rg8 26.Qxe5 Qd5 27.Qe7 Bd3 28.Rc6 Qf5! leaves Black up a piece.

BLACK: Lázaro Bruzón
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WHITE: Hikaru Nakamura
Position after 24...Be4g6


25.Rxg6+!!

  • The sacrifice strips the King's cover bare.

25...hxg6 26.Qxg6+ Kh8 27.Bg5

  • White threatens mate in two.

27...Rf8

  • Giving up the exchange is the only way out.
  • If 27...Rd7 28.Bf6+ Rg7 29.Bxg7+ Qxg7 then:
    • 30.Qh5+! Kg8 31.Qxe2 exd4 32.Qh5 Rb8 33.Qd5+ leaves White a pawn to the good.
    • Black wins after 30.Qxg7+?? Kxg7.

28.Bf6+

  • After 28.Qh5+? Kg8 29.Qxe2 exd4 30.Be7 Rf7 31.Qg4+ Rg7 the best White has is to draw by perpetual check: 32.Qe6+ Kh7 33.Qh3+ Kg6 34.Qe6+ Kh7 etc.
  • 32...Rf7 33.Qg6+ Rg7 34.Qe6+ etc.

28...Rxf6 29.Qxf6+ Kg8 30.Qe6+ Qf7

  • If 30...Kh7 then 31.Qf5+ Kg8 32.Qg4+ also works.

31.Qg4+ Qg7 32.Qxe2 exd4 33.cxd4

  • 33.Qh5 Rb8 34.Qd5+ transposes to the note after Black's 27th move.

33...Rd8?

  • Black misses his last chance to save the game.
  • 33...Qxd4! 34.Qe6+ Kg7 35.Qe7+ Kh8 36.Qb7 Rf8 equalizes.

34.Rb1?!

  • White should still win, but he misses a chance to put the game away faster.
  • 34.Qe6+ Qf7 35.Qa6 Rd5 36.Re1 Rxd4 37.Qxb5 c3 38.Re8+ Black must wait before advancing any further the passed pawn while he deals with White's mating threats.

34...Qxd4 35.Qe6+ Kg7 36.Qe7+ Kh8

BLACK: Lázaro Bruzón
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WHITE: Hikaru Nakamura
Position after 36...Kg7h8


37.h3!

  • White is now ready to deploy the Rook. This quiet move decides the struggle.

37...a6

  • Black has no good moves.
  • 37...c3 38.Rxb5 then:
    • If 38...Qd1+ 39.Kh2 Qd6+ 40.Qxd6 Rxd6 41.Rb8+ then:
      • 41...Kg7 42.Rb7+ Kf6 43.Rc7 leaves no way for Black to defend the c-pawn.
      • 41...Kh7? 42.Rc8 Rd3 43.Rc7+ Kg6 44.Rxa7 Black cannot prevent White from playing 45.Rc7, immobilizing the Black Rook or winning the last pawn.
    • 38...c2? 39.Rh5+ Kg8 40.Qh7+ Kf8 41.Rf5+ Ke8 42.Qf7#.

38.Re1 c3 39.Re5

  • Better is 39.Re6 c2 40.Rh6+ Kg8 41.Qe6+ Kf8 42.Qf5+ when:
    • 42...Kg8 43.Rg6+ Black must submit to mate or lose the Queen.
    • If 42...Ke8 then after 43.Re6+ Kd7 44.Qf7+ Kc8 45.Rc6+ Kb8 46.Qc7+ Ka8 47.Rxa6+ White mates on the next move.

39...Qd1+ 40.Kh2 Qd6 41.Qh4+ Kg7 42.Qg3+ Kf6

  • If 42...Kf7 43.Qf4+ Kg7 44.Qg5+ then:
    • 44...Kf8 45.f4 Rd7 46.Qf5+ Kg7 47.Re6 White wins easily.
    • 44...Kf7 45.g3 Rf8 46.Qf4+ Qf6 47.Rf5 wins the Queen.

43.f4 c2

  • The pawn is Black's last best chance, but White has a simple tactical resource to put an end to the "threat."

BLACK: Lázaro Bruzón
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WHITE: Hikaru Nakamura
Position after 43...c3c2


44.Qg5+!

  • The text is much faster than 44.Qh4+ Kg7 45.Rg5+ Kf8 46.Qh8+ then:
    • 46...Ke7 47.Qh7+ Ke8 48.Rg8+ Qf8 49.Rxf8+ Kxf8 50.Qxc2 when White wins.
    • If 46...Kf7 then 47.Qh5+ Ke6 48.Rg6+ Kd7 49.Qf5+ Kc6 50.Qxc2+ wins the Queen.

44...Kf7 45.Qf5+ Kg7 46.Qxc2 Rf8

  • If 46...Qd3 then after 47.Rg5+ Kf7 48.Qc7+ Rd7 49.Qe5 Qd6 50.Qg7+ White wins with no difficulty.

47.Rg5+ Kf7 48.Qh7+ Ke8

  • If 48...Ke6 then 49.Re5+ Kf6 50.Qf5+ Kg7 51.Qg4+ wins.

49.Re5+ Kd8 50.Qb7 1-0

  • There is no adequate defense against 51.Rd5.
  • El señor Bruzón resigns.



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