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13. Bulski - Cheparinov, Round 9

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[center]Ivan Cheparinov[/center][font size="1"]Photo by karpidis modified from flickr (http://www.flickr.com/photos/8022405@N02/1892150984/) in Wikimedia Commons (http://commons.wikimedia.org/wiki/Category:Ivan_Cheparinov)
(Creative Commons License, Attribution/Share Alike)
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Krzysztof Bulski - Ivan Cheparinov
Politiken Cup, Round 9
Helsingør, 4 August 2012

West India Game: King's Indian Defense (Catalan Opening)

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 0-0 5.Nc3 d6 6.Nf3 Nc6 7.0-0 a6 8.b3 Rb8 9.Nd5

• For moves and variations up to here, see Maiorov-B. Socko, Euro Ch, Rijeka, 2010.

9...Nxd5

• If [font color="red"]9...e6 10.Nxf6+ Qxf6[/font] then:
• If [font color="red"]11.Bg5 Qf5[/font] then:
• If [font color="red"]12.Qd2 Nxd4 13.Nxd4 Bxd4 14.Qxd4 Qxg5 15.Qa7 Bd7 16.Bxb7 a5[/font] then:
• If [font color="red"]17.Rfd1 Rfd8[/font] then:
• [font color="red"]18.Bg2 Qc5 19.Qxc5 dxc5 20.Rd3 Kf8 21.Re3 f6 22.f4[/font] yields the edge in space to White (Mamedyarov-McShane, Young Masters, Lausanne, 2003).
• If [font color="darkred"]18.Bf3[/font] then:
• [font color="darkred"]18...Qc5 19.Qxc5 dxc5 20.Rd3[/font] gives White a significant advatange in space (Bu Xiangzhi-Bologan, Op, Gibraltar, 2008).
• [font color="magenta"]18...Rbc8[/font] then after [font color="magenta"]19.Rac1 a4 20.b4 e5 21.b5 Bg4 22.Rc3[/font] White holds his position and his edge in space.
• [font color="burgundy"]17.Rad1 Rfd8 18.Rd3 Kf8 19.Rfd1 Ke7 20.Bc6 Rb6 21.Bb5 Qc5[/font] gives White the advantage in apce on the queenside (Ruck-Fedorov. Eur Club Cup, Fügen (Austria), 2006).
• If [font color="darkred"]12.Be3 e5 13.Qd2 Qh5[/font] then:
• If [font color="darkred"]14.d5 Ne7 15.Ng5 h6 16.Ne4[/font] then:
• [font color="darkred"]16...f5 17.Bf3 Qh3 18.Bg2[/font] draw (A. Graf-McShane, Euro Ch, Istanbul, 2003).
• [font color="darkorange"]16...b6?! 17.h4! Kh7 18.Rad1[/font] gives White a camfortable game (Timman-Fedorov, FIDE Knock Out, Las Vegas, 1999).
• [font color="magenta"]14.Rfe1 Bh3 15.Rad1 Rbd8 16.Qc1 Bxg2 17.Kxg2 e4[/font] is equal (Grigoriants-Amonatov, Aeroflot Op, Moscow, 2008).
• [font color="darkorchid"]11.Bb2 e5 12.dxe5 d5 13.c5 Qe7 14.Rc1 f5 15.Qc2 Rd8[/font] gives White the edge in space, but Black's center is well defended (Adorjan-Bouaziz, Szirak, 1987).
• If [font color="blue"]9...Nh5 10.Bb2 e6[/font] then:
• If [font color="blue"]11.Nc3 b5[/font] then:
• If [font color="blue"]12.d5 Ne7 13.dxe6[/font] then:
• If [font color="blue"]13...fxe6 14.c5[/font] then:
• If [font color="blue"]14...dxc5 15.Qc2[/font] then:
• If [font color="blue"]15...Nc6 16.Rad1 Nd4 17.Nxd4 cxd4[/font] then:
• If [font color="blue"]18.Ne4 e5 19.e3 Bf5 20.Qc5 Rf7[/font] then:
• If [font color="blue"]21.exd4 exd4 22.Rxd4 Qe7[/font] then:
• [font color="blue"]23.Ba1?! Qxc5 24.Nxc5 Bxd4 25.Bxd4 Rd8[/font] gives Black the edge in space to go with being an exchange to the good (Sargissian-Nijboer, Ol, Bled, 2002).
• [font color="#8040C0"]23.Qd5 Re8 24.Rc1 Nf6 25.Nxf6+ Bxf6 26.h4[/font] gives Black a small advantage in space.
• [font color="darkcyan"]21.Rd2 Qe7 22.exd4 Bxe4 23.Bxe4 exd4 24.Qc6 Rf6[/font] is equal (Anastasian-Jenni, Ol, Istanbul, 2000).
• If [font color="darkblue"]18.e3 e5 19.exd4[/font] then:
• [font color="darkblue"]19...exd4!? 20.Nd5 Bg4 21.Rd2 d3 22.Qxd3 Bxb2 23.Rxb2[/font] gives White better activity for his minor pieces (K. Georgiev-Antic, Yugoslave ChT, Herceg Novi, 2001).
• [font color="dodgerblue"]19...Bf5 20.Qc1 exd4 21.Nd5 d3 22.Bxg7 Nxg7 23.Rfe1[/font] continues to give White a small advantage.
• If [font color="darkblue"]15...Bb7 16.Nd1 Qd6 17.Bxg7 Nxg7 18.Rc1[/font] then:
• [font color="darkblue"]18...Nef5?! 19.Qxc5! Bxf3 20.Bxf3 Rbc8 21.Ne3[/font] gives White a fair advantage in space (Karpov-Shirov, Amber Rapid, Monte Carlo, 1999).
• [font color="dodgerblue"]18...e5 19.Qxc5 Bxf3 20.Qxd6 cxd6 21.Bxf3[/font] remains equal.
• [font color="#8040C0"]14...Bb7 15.cxd6 cxd6[/font] is equal (Grabarczyk-B. Socko, Polish Ch, Polanica Zdroj, 1999).
• If [font color="darkblue"]13...Bxe6 14.cxb5 axb5 15.Qd2[/font] then:
• [font color="darkblue"]15...b4 16.Nd1 Nf6 17.Ng5 Bc8 18.Ne4 Nxe4 19.Bxe4[/font] gives White slight more activity for her minor pieces (Houska-A. Hunt, British Ch, Canterbury, 2010).
• [font color="dodgerblue"]15...Nf6 16.Ng5 Bf5 17.Rfd1 b4 18.Nce4[/font] gives White a slight advantage in space (Ivanchuk-Radjabov, Grand Prix, Dubai, 2002).
• If [font color="darkblue"]12.cxb5 axb5 13.Rc1 b4[/font] then:
• [font color="darkblue"]14.Na4 Na5 15.Qc2 Ba6 16.Rfe1 c6 17.e4[/font] gives White a better center and Black a slight advantage in space Romanishin-Nijboer, IT, Essen, 2001).
• If [font color="dodgerblue"]14.Nb1 Na7 15.Ne1[/font] then:
• [font color="dodgerblue"]15...c5 16.Qd2 Bxd4 17.Bxd4 cxd4 18.Qxd4[/font] is equal (Szabolcsi-Resika, Spring Op, Budapest, 2001).
• [font color="darkcyan"]15...Nb5 16.Qd2 Bb7 17.Rc4 Bxg2 18.Nxg2[/font] is equal (Roamnishin-I. Smirin, IT, Ischia, 1996).
• If [font color="darkblue"]11.Ne3[/font] then:
• If [font color="darkblue"]11...f5 12.Qd2 Ne7 13.Rac1 Bh6[/font] then:
• [font color="darkblue"]14.Ne1 g5 15.Nd1 Rf6 16.e3 g4 17.Nd3[/font] gives White more freedom (Grachev-G. Szabo, Euro Ch, Plovdiv, 2008).
• [font color="#8040C0"]14.Rc2 Nf6 15.Qd3 g5 16.c5 g4 17.Nd2[/font] gives White a small advantage in space (Grigoryan-Fier, Op, Varna, 2012).
• If [font color="dodgerblue"]11...Ne7 12.Qd2 b6[/font] then:
• [font color="dodgerblue"]13.Ne1 f5 14.f4 h6 15.Nd1 Nf6 16.Nf2 Bb7[/font] is equal (Grachev-Krylov, Moscow Op, 2007).
• [font color="darkcyan"]13.Rac1 Bb7 14.Rfd1 h6 15.c5 Nf6 16.cxb6 cxb6 17.Ba3[/font] gives White a slight advantage in space (Rausis-Bologan, IT, Enghien-les-Bains, 1999).

10.cxd5 Nb4 11.e4 f5 12.Ng5 c5

• If [font color="red"]12...fxe4! 13.Bxe4[/font] then:
• If [font color="red"]13...c6?[/font] then White wins after [font color="red"]14.Nxh7! Kxh7 15.Qh5+ Kg8 16.Bxg6[/font] White wins (Romanishin-Kantsler, IT, Tbilisi, 1986).
• [font color="darkred"]13...Bf5 14.Qe1 a5 15.a3 Nc2 16.Bxc2 Bxc2 17.Qe6+[/font] continues to give White a comfortable game.

13.dxc6 Nxc6 14.exf5 Bxf5 (N)

• [font color="red"]14...Rxf5 15.g4 Rf6 16.Be3 d5 17.h3 h6 18.Nf3[/font] gives White a fair advantage in space (Rustemov-Loginov, Russian Ch, Elista, 2001).

[center]BLACK: Ivan Cheparinov[/center]

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[center]WHITE: Krzysztof Bulski[/center][center]Position after 14...Bc8f5:p[/center]

15.Be3

• The game is equal..

15...d5 16.g4

• If [font color="red"]16.Rc1 h6[/font] then:
• [font color="red"]17.Nh3 e5 18.g4 Bc8 19.Rc5 Qh4 20.dxe5[/font] remains equal.
• [font color="darkred"]17.Nf3 g5 18.Qe2 Qd6 19.Rfd1 e6[/font] remains equal.

16...Bc8 17.h3 Qd6 18.Qd2 h6!?

• [font color="red"]18...e6[/font] (giving Black a bind on f5 in particular and a good command of the light squares overall) [font color="red"]19.Rac1 a5 20.f4 Ra8 21.Nf3 a4 22.Ne5[/font] remains equal.

19.Nf3!

• White has a slim advantage in space.

19...h5

• If [font color="red"]19...g5 20.Rad1 Be6 21.Ne5[/font] then:
• [font color="red"]21...Nxe5 22.dxe5 Bxe5 23.Bxd5 Rfd8 24.Be4 Qxd2 25.Rxd2 Rxd2 26.Bxd2[/font] continues to give White a slim edge with stronger pawns.
• [font color="darkred"]21...Qb4?! 22.Nxc6 bxc6 23.Qc2 Qd6 24.Qc1 a5 25.f4[/font] gives White a small-to-fair advantage with the critical point at f4; Black should not play 25...gxf4 as White would plant a piece on the square.

20.gxh5 Bxh3!?

• Black wins a pawn, but White gains in space.
• If [font color="red"]20...gxh5 21.Ng5 Rf5 22.h4 Rf6 23.Rac1 Bg4 24.a4[/font] is equal.

[center]BLACK: Ivan Cheparinov[/center]

[center][/center]

[center]WHITE: Krzysztof Bulski[/center][center]Position after 20...Bc8h3:p[/center]

21.Bxh3!

• White has a small advantage in space.

21...Rxf3 22.Bg2!?

• [font color="red"]22.Kg2 Rxh3 23.Kxh3 Qe6+ 24.Kh2 Rf8 25.f3[/font] gives White a small advantage in space.
• If [font color="blue"]22.Bg4!? Rf7 23.h6[/font] then:
• [font color="blue"]23...Bf6! 24.Rac1 Rd8 25.b4 Bh4 26.Rb1 e5 27.b5[/font] is equal.
• [font color="darkblue"]23...Bh8!? 24.Rac1 e5 25.dxe5 Nxe5 26.Be2 Qe6 27.Kg2[/font] gives White a small advantage in space.

22...Rf5!

• Black has a slight advantage in space.

23.h6 Bh8 24.Rad1 Rbf8 25.f4!?

• White cuts the file from under Black's Rooks, but the h-pawn is doomed.
• If [font color="red"]25.Bh3[/font] then:
• [font color="red"]25...Rh5 26.Kg2 Kh7 27.Rh1 Rh4 28.f4 Bf6[/font] continues to give Black a small advantage since the h-pawn is deadwood.
• [font color="darkred"]25...Rf4 26.Bxf4 Rxf4 27.Kg2 Bxd4 28.Be6+ Kh7[/font] gives Black an extra pawn and more space; the White Bishop is protected by the threat to Black's Rook.

25...Kh7!

• Black takes a fair advantage in space.
• [font color="red"]25...Rh5!? 26.Bf3! Rxh6 27.Qg2 Rf5 28.Bg4 Rf7[/font] gives Black a small advantage in space.

26.Rf3 e6?!

• A better try is to pre-empt a White display of force in in the h-file, where Black has his King and White a passed pawn.
• If [font color="red"]26...Rh5 27.Rh3 Rxh6 28.Rxh6+ Kxh6[/font] continues to gives Black a fair advantage.

[center]BLACK: Ivan Cheparinov[/center]

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[center]WHITE: Krzysztof Bulski[/center][center]Position after 26...e7e6[/center]

27.Bh3

• Black again has just a small advantage in space.

27...Rh5 28.Qg2?!

• Black's pawn at g6 is far too easily protected for White to make a target of it.
• If [font color="red"]28.Kg2 Ne7 29.Rh1 Nf5 30.Bxf5 Rfxf5 31.Rfh3 Qe7[/font] continues to give Black a small advantage in space.

28...Ne7!

• With that, the pawn is safe.
• [font color="red"]28...Rxh6 29.f5 exf5 30.Bxh6 Kxh6 31.Bxf5 Bxd4+ 32.Kh1[/font] is equal.

29.Bg4

• If [font color="red"]29.Qe2 Bf6[/font] then:
• [font color="red"]30.Rc1 Rh8 31.Kg2 Nf5 32.Bxf5 exf5 33.Qc2 Qe6[/font] Black will soon take the h-pawn; White has some counterplay in the c-file.
• [font color="darkred"]30.Bg4 Rh4 31.Rh3 Rxh3 32.Bxh3 Nf5 33.Qd2 Kxh6[/font] gives Black an extra pawn and more freedom.

29...Rh4 30.Rh3?

• White now falls into a hopeless position.
• If [font color="red"]30.Bf2 Rxh6 31.Rh3 Bg7[/font] then:
• [font color="red"]32.Bh4 Nf5 33.Bxf5 exf5 34.Bg5 Rxh3 35.Qxh3+ Kg8[/font] gives Black an extra pawn; White has a little more space.
• [font color="darkred"]32.Rdd3 Nf5 33.Bxf5 Rxf5 34.Rdf3 Qb4 35.Rxh6+ Bxh6[/font] gives Black an extra pawn, more activity and more space; White may be able to free a piece for counterplay.

[center]BLACK: Ivan Cheparinov[/center]

[center][/center]

[center]WHITE: Krzysztof Bulski[/center][center]Position after 30.Rf3h3[/center]

30...Rxh3!

• Black wins in all variations.

31.Qxh3

• If [font color="red"]31.Bxh3 Nf5 32.Bxf5 exf5[/font] then:
• If [font color="red"]33.Rc1 Re8 34.Qd2 Kxh6[/font] then:
• [font color="red"]35.Kg2 Bf6 36.Qc3 a5 37.a4 Bd8 38.Kf2 Qe7[/font] gives Black an extra pawn and command of attacking lanes.
• If [font color="darkred"]35.Qh2+ Kg7 36.Qe2 Kg8 37.Qd3 Bg7[/font] then:
• [font color="darkred"]38.Kg2 Bh6 39.Qd2 Re4 40.Kf3 Bf8 41.Rg1 Qe6[/font] gives Black an extra pawn and power up the center.
• If [font color="magenta"]38.Kf2[/font] then Black wins after [font color="magenta"]38...Qe7 39.Rh1 Rc8 40.Ke2 Kf7 41.Rh2 b5[/font] ().
• If [font color="darkred"]33.Qe2 Kxh6[/font] then:
• If [font color="darkred"]34.Qh2+ Kg7 35.Qd2 Kf7[/font] then:
• [font color="darkred"]36.Rc1 Re8 37.Qc3 Re7 38.Kg2 Bf6 39.Qd3 Re4[/font] gives Black an extra pawn, more freedom and pressure in the center.
• If [font color="magenta"]36.Bf2 Re8 37.Kg2 Re4[/font] then:
• [font color="magenta"]38.Rh1[/font] then Black wins after [font color="magenta"]38...Bf6 39.Rh7+ Bg7 40.Kf3 Qe6 41.a4 Kg8.[/font]
• If [font color="darkorange"]38.Bg3[/font] then Black wins after [font color="darkorange"]38...Rxd4 39.Qc2 Rxd1 40.Qxd1 Qe6 41.Kg1 Qe3+.[/font]
• If [font color="magenta"]34.Qc2 Re8 35.Rd3 Bf6[/font] then:
• [font color="magenta"]36.Qc1 Bh4 37.Bd2 Kg7 38.Qc5 Qd7 39.Qc3 Bf6 leaves Black a pawn up with command of critical attacking lanes; the White Queen at c3 doesn't promise any fruitful counterpaly.[/font]
• If [font color="darkorange"]36.Qf2 b5 37.Qd2 b4 38.Kg2 Kg7 39.Bg1 a5[/font] leaves Black a pawn to the good with command of attacking lanes.

31...Nf5 32.Bxf5

• If [font color="red"]32.Bd2 Qb6[/font] then:
• If [font color="red"]33.Bxf5 Bxd4+ 34.Kf1 Rxf5[/font] then:
• If [font color="red"]35.Kg2 e5[/font] then:
• If [font color="red"]36.Re1 e4 37.a3 Rh5[/font] then:
• [font color="red"]38.Qc8 Kxh6 39.f5+ Kh7 40.Qe6 Qxe6 41.fxe6 Kg7[/font] leaves Black two pawns to the good.
• If [font color="burgundy"]38.Qd7+[/font] then Black wins after [font color="burgundy"]38...Kxh6 39.Qe7 Qf6 40.f5+ g5 41.Qd7 Be5.[/font]
• If [font color="darkpink"]36.Qg4[/font] then Black wins after [font color="darkpink"]36...exf4 37.Bxf4 Be3 38.Re1 Bxf4 39.Re7+ Kg8.[/font]
• [font color="darkorchid"]35.Ke2 e5 36.Rf1 e4 37.Rc1 a5 leaves Black a pawn to the good with much more active pieces.[/font]
• If [font color="darkred"]33.Kh1 Qxd4[/font] then:
• [font color="darkred"]34.Bxf5 Rxf5 35.Qf3 Be5 36.Bc1 Qb4 37.Bd2 Qf8[/font] wins the f-pawn.
• [font color="magenta"]34.Rc1 Rf7 35.Qh2 Ne3 36.Bxe3 Qe4+ 37.Qg2 Qxe3[/font] leaves White two pawns to the good once the deadwood f-pawn falls.

32...exf5 33.Qf1

• If [font color="red"]33.Kf1[/font] then Black wins after [font color="red"]33...Re8! 34.Rd3 Bf6 35.Qh2 Qe7 36.Qg3 Qe4[/font] ().

33...Re8 34.Qd3

• If [font color="red"]34.Qh3 Qe7 35.Kf2 Rc8[/font] then:
• [font color="red"]36.Rd2 Rc3 37.Qg3 Qe6 38.Ke2 Qe4 39.Qf3 Kxh6[/font] gives Black an extra pawn and more freedom.
• [font color="darkred"]36.Re1 Bf6 37.Rc1 Bh4+ 38.Kg1 Rxc1+ 39.Bxc1 Qe1+[/font] leaves Black with an extra pawn in minor piece ending.

[center]BLACK: Ivan Cheparinov[/center]

[center][/center]

[center]WHITE: Krzysztof Bulski[/center][center]Position after 34.Qf1d3[/center]

34...Re4

• The pressure in the center leaves White with no satisfactory moves.

35.Rc1

• If [font color="red"]35.Qc3[/font] then Black wins after [font color="red"]35...Qe7 36.Rd3 Qh4 37.Bf2 Qxf4[/font]
• If [font color="blue"]35.Bd2[/font] then Black wins after [font color="blue"]35...Bxd4+ 36.Kf1 g5 37.Re1 g4 38.Kg2 Kxh6.[/font]

35...Qe7 36.Rc3 Rxe3 0-1

• If [font color="red"]37.Qxe3[/font] then Black wins after [font color="red"]37...Qxe3+ 38.Rxe3 Bxd4 39.Kf2 Kxh6.[/font]
• Bulski resigns.