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[Jack Rabbit]

14. Wang Yue - A. Vovk, Round 8

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[center]Wang Yue[/center]
[font size="1"]Photo by http://commons.wikimedia.org/wiki/User:Samson1964 Frank Hoppe in http://commons.wikimedia.org/wiki/File:Wang_yue_20081119_olympiade_dresden.jpg Wikimedia Commons (Public Domian)
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Wang Yue - Andrey Vovk
http://www.chessgames.com/perl/chessgame?gid=1653049
87th International Chess Congress, Round 8
Hastings, 4 January 2012

West India Game: King's Indian Defense (Main Line/Gligoric Variation)

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 0-0 6.Be2 e5

[center]BLACK[/center]

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[center]WHITE[/center][center][/center]West India Game: King's Indian Defense (Main Line)[center]Position after 6...e5[/center]


7.Be3

• The text is the Gligoric Variation.
• If [font color="red"]7.0-0[/font] then:
• [font color="red"](Rio de Janeiro Variation)[/font] If [font color="red"]7...Nbd7 8.Re1 c6 9.Bf1[/font] then:
• If [font color="red"]9...exd4 10.Nxd4[/font] then:
• [font color="red"]10...Re8 11.Rb1 Nc5 12.f3 a5[/font] then:
• If [font color="red"]13.Be3 Nfd7 14.Qd2[/font] then:
• If [font color="red"]14...Ne5[/font] then:
• If [font color="red"]15.Red1 Qe7 16.Nb3 a4[/font] then:
• [font color="red"]17.Nxc5 dxc5 18.Rbc1 Be6 19.Qc2 Bxc4 20.Nxa4[/font] gives White better pawns and a small advante in space (Filip-Tolush, IT, Bucharest, 1953).
• [font color="burgundy"]17.Nd4 h5 18.Nc2 Bf8 19.Bh6 Be6 20.Bxf8 Rxf8[/font] is equal (Kniazer-Clarke, Ol, Amsterdam, 1954).
• If [font color="darkred"]15.Rbd1 a4[/font] then:
• [font color="darkred"]16.Rb1 f5 17.exf5 gxf5 18.b4 axb3 19.axb3[/font] is equal (Gligoic-Ligterink, Donner Mem, Amsterdam, 1994).
• [font color="magenta"]16.Nc2 Qb6 17.Qc1 Bf8 18.Nd4 Qb4 19.Ndb5[/font] gives White a the initiative with the threat of [i[20.Nc7! and if Black plays 19...cxb5? then White replys 20.Nd5! Qa5 (forced) 21.Nf6+ winning the exchange (Bilek-Honfi, Hungarian Ch, 1973). Fritz gives 19...Qa5 as equal; in the game, Black played 19...Be6 and struggled successfully for draw.
• [font color="burgundy"]14...a4 15.b4 axb3 16.axb3 Ne5 17.Red1 Qe7 18.Kh1[/font] is equal (Gyimesi-Miroshnichenko, Bundesliga 0405, Germany, 2004).
• [font color="darkred"]13.Bf4[/font] then:
• [font color="darkred"]13...d5!? 14.exd5 Rxe1 15.Qxe1 Nxd5 16.cxd5 Bxd4+ 17.Be3[/font] gives White a tactical edge by being able to reload on e3 with his Queen, forcing the Black Queen to move to cover the Knight, thus saving the pawn at d5 (Tal-Grigorian, Soviet Ch, Leningrad, 1977). Overall, this variation gives White a fair advange.
• [font color="magenta"]13...Nh5 14.Be3 f5 15.exf5 gxf5 16.Qd2 f4 17.Bf2[/font] gives White the better center; the Knight can only be exchanged at d4 and Black's Rook can be driven from e8 (Swiercz-Pruijssers, Cultural Village, Wijk aan Zee, 2010).
• If [font color="darkred"]10...Ng4 11.h3 Qb6 12.hxg4 Qxd4[/font] then:
• If [font color="darkred"]13.g5 Qe5 14.Be3 f6 15.Qd2 fxg5[/font] then:
• If [font color="darkred"]16.Rad1 g4[/font] then:
• [font color="darkred"]17.Bd4 Qxd4 18.Qxd4 Bxd4 19.Rxd4 Ne5 20.Rxd6 Bd7[/font] is equal (Ftacnik-Vogt, Keres Mem, Tallinn, 1983).
• [font color="burgundy"]17.Qxd6 Qe8 18.Bd4 Ne5 19.Re3 Qf7 20.Ree1 Re8[/font] gives Black a comfortable game relative White's; the White Queen in in danger of being trapped (Vilela-Vogt, IT, Hallw, 1981).
• [font color="darkpink"]16.Bxg5 Nb6 17.Rac1 Bg4 18.Nd1 Rae8 19.Bh4 Qh5[/font] is equal (Tal-Bielczyk, IT, Riga, 1981).
• If [font color="magenta"]13.Be3[/font] then:
• If [font color="magenta"]13...Qxd1 14.Raxd1 Ne5[/font] then:
• [font color="magenta"]15.g5 Be6! 16.c5 dxc5 17.Bxc5 Rfe8 18.f4[/font] gives White a small advantage in space (Mikhalchishin-Balashov, IT 8586, Hastings, 1985).
• [font color="burgundy"]15.Rxd6 Be6 16.c5 Nxg4 17.Bd4[/font] is slightly better.
• If [font color="darkorange"]13...Qe5 14.g5 Qe7 15.Qd2 Ne5 16.Rad1[/font] then:
• If [font color="darkorange"]16...Be6 17.b3 Rad8 18.Bd4 f6 19.f4[/font] then:
• If [font color="darkorange"]19...Ng4?![/font] then:
• [font color="darkorange"]20.Be2! h5 21.Nd5 Bxd5 22.exd5 Qd7 23.Bxg4 Qxg4 24.Re7[/font] gives White a Rook on the seventh rank and the advantage in space (Pinter-Knaak, TM, Zinnowitz, 1980).
• [font color="burgundy"]20.Nd5 Qf7 21.Nxf6+ Nxf6 22.gxf6 Bxf6 23.g3[/font] gives White a small advantage in space (Alexandria-Vogt, IT, Halle, 1981).
• [font color="hotpink"]19...fxg5 20.fxe5 dxe5 21.Nd5 cxd5 22.exd5[/font] continues to give Black a comfortable advantage.
• [font color="purple"]16...Rd8?! 17.f4! Ng4 18.Bc5 Bf8 19.Ba3 Qc7 20.e5[/font] gices White a strong advantage.
• If [font color="darkred"]a) 9...Re8 10.d5 c5 11.a3 Rf8[/font] then:
• If [font color="darkred"]12.g3 Ne8 13.b4[/font] then:
• [font color="darkred"]13...h6 14.Nh4[/font] then:
• [font color="darkred"]14...Ndf6 15.bxc5 dxc5 16.a4 a5 17.Rb1 Nd6 18.Ba3[/font] gives White the advantage in space and a slight initiative (Christoffel-Boleslavsky, IT, Gronigen, 1946).
• [font color="burgundy"]14...Kh7 15.Qc2 b6 16.Bd2 Bf6 17.Ng2 Ba6 18.Ne3[/font] gives White the advantage in space, but he needs to exchange pawns somewhere for that to be worth anything (Gligoric-Ju. Bolbochán, IT, Mar del Plata, 1953).
• [font color="darkorange"]13...Qe7 14.Rb1 f5 15.exf5 gxf5 16.Bd2 Bf6 17.Bh6[/font] gives White a comfortable advantage in space and the intiative; Black's game is badly cramped (Pachman-Benko, IT, Buenos Aires, 1960).
• [font color="magenta"]12.Rb1 Ne8 13.b4 b6 14.g3 f5 15.Ng5 Ndf6[/font] (Taimanov-Uhlmann, Alekhine Mem, Moscow, 1956).
• If [font color="darkred"]b) 9...a5 10.Rb1 Re8 11.d5 Nc5 12.b3 Bd7 13.a3 cxd5 14.cxd5 b5 15.b4 axb4[/font] then:
• If [font color="darkred"]16.Rxb4!?[/font] then:
• If [font color="darkred"]16...Rb8[/font] then:
• If [font color="darkred"]17.Bd2 Qa5 18.Qa1 Qa7 19.Be3 Rec8[/font] then:
• [font color="darkred"]20.h3 Ra8 21.Nxb5 Bxb5 22.Bxb5 Qxa3 23.Qxa3 Rxa3 24.Nd2[/font] leaves White better on the open queenside (Kozma-Vogt, Capablanca Mem, Cienfuegos, Cuba, 1976).
• [font color="burgundy"]20.Bxb5 Bxb5 21.Rxb5 Rxb5 22.Nxb5 Qa6 23.Bxc5 Rxc5[/font] gives White command of the c-file againt White's weak extra pawn (W. Schmidt-Knaak, ZT, Pula, 1975).
• [font color="darkpink"]17.Qc2 Qa5 18.Qb2 Na6 19.Rb3 Nc5[/font] draw (Szmetan-Ftacnik, IT, Amsterdam, 1977).
• [font color="darkorchid"]16...Qa5 17.Qd2 Rec8 18.Qb2 Rab8 19.Bd2 Na6 20.Rb3[/font] is equal.
• If [font color="magenta"]16.axb4 Na4?![/font] then:
• If [font color="magenta"]17.Nxb5!? Qb8! 18.Qd3 Bxb5 19.Qxb5 Nc3 20.Qd3[/font] then:
• [font color="magenta"]20...Nxb1!? 21.Qxb1 Nd7[/font] is equal (Csala-Stuchly, Op, Tatras, Slovakia, 2001).
• [font color="purple"]20...Rc8! 21.Bd2 Nxb1 22.Qxb1 Nd7[/font] gives Black a small advantaghe in space.
• [font color="darkorange"]17.Nxa4! Rxa4 18.Bd3 Rf8 19.Bc2 Ra8 20.Bg5 h6[/font] is equal (Savic-Bielczyk, Op, Sandomierz Vitrobud, Poland, 1976).
• [font color="darkred"](Aronin Variation)[/font] If [font color="darkred"]7...Nc6 8.d5 Ne7[/font] then:
• If [font color="darkred"]9.Ne1 Nd7[/font] then:
• If [font color="darkred"]10.Nd3 f5 11.Bd2 Nf6 12.f3 f4 13.c5 g5 14.cxd6 cxd6 15.Nf2[/font] then:
• If [font color="darkred"]15...h5 16.h3 Ng6 17.Qc2 Rf7 18.Rfc1[/font] then:
• If [font color="darkred"]18...g4 19.hxg4 hxg4 20.fxg4[/font] (White has won a pawn) [font color="darkred"]20...Ne8 21.a4 Bf6[/font] then:
• [font color="darkred"]22.Ncd1 Bh4 23.Nh3 Rg7 24.Ndf2 Nf8 25.Ra3[/font] gives White an extra pawn, more freedom and more space (Sosonko-Ye Jiangchuan, IT, Hong Kong, 1989).
• [font color="#FF80CD"]22...Rh7? 23.Na4 Bd7 24.Nb6 Rb8 25.Nxd7 Nxd7 26.Nh3[/font] gives White a tremendous advantage in space.
• If [font color="magenta"]18...a6 19.a4[/font] then:
• If [font color="magenta"]19...Bf8 20.a5[/font] then:
• If [font color="magenta"]20...g4 21.fxg4 hxg4 22.hxg4[/font] then:
• If [font color="magenta"]22...b5 23.axb6 Qxb6 24.Na4 Qa7 25.Ba5 Rb8[/font] then:
• If [font color="magenta"]26.Bc7 Rb7 27.Bxd6 Bxd6 28.Qxc8+[/font] gives White two extra pawns (Sosonko-Rogic, Op, Bled, 1997).
• If [font color="purple"]26.g5[/font] then:
• If [font color="purple"]26...Nh7?! 27.Nb6[/font] then:
• [font color="purple"]27...f3? 28.Bxf3 Rxb6 29.Bxb6 Qxb6 30.Qxc8 Nxg5 31.Rxa6[/font] gives White two extra pawns (Rogers-Sznapik, Ol, Thessalonik, 1988).
• [font color="darkpink"]27...Bb7 28.Bh5 Kg7 29.Qa4 Nxg5 30.Nd7[/font] barely keeps Black in the game.
• [font color="hotpink"]26...Ng4! 27.Bxg4 Bxg4 28.Ra3 f3[/font] is equal (Azmapairashvili-Cvitan, IT, Tilburg, 1993).
• [font color="burgundy"]22.Bf3 Bh4 23.Ncd1 Bg3 24.Nh3 Qh4 25.Ndf2[/font] still, leaves Whte with an extra pawn ((Valden-Tsanas, Op, Glyfada, 2001).
• If [font color="darkorange"]20...b5 21.axb6 Qxb6 22.Na4 Qa7 23.Ba5[/font] then:
• [font color="darkorange"]23...Rb7 24.Kf1 Bd7 25.Ra3 Be7 26.Rc3 Bd8 27.b4[/font] gives White a slight advantage (Sosonko-Fedorowicz, Rpd TM, Cannes, 1992).
• [font color="purple"]23...g4 24.fxg4 hxg4 25.Bb6 Qe7 26.hxg4 f3 27.Bxf3[/font] gives White two extra pawns (Seawald-Shezer, Op, Chicago, 1993).
• [font color="darkpink"]19...b6 20.Ra3 Bf8 21.Na2 Nh4 22.Qd1 Rg7 23.Be1[/font] gives White more active minor pieces (Ree-Browne, Op, Lone Pine, 1978).
• If [font color="magenta"]15...Ng6 16.Qc2 Rf7 17.Rfc1[/font] then:
• If [font color="magenta"]17...Bf8 18.a4 h5 19.Nb5 Ne8 20.h3[/font] then:
• [font color="magenta"]20...Nh4 21.Ra3 a6 22.Rc3 Bd7 23.Na3[/font] gives White more freedom (Kozul-Srebrnic, Op, Nova Gorica, 1999).
• If [font color="darkorange"]20...a6?! 21.Na3[/font] then:
• [font color="darkorange"]21...Rg7? 22.Nc4 Bd7 23.Ba5[/font] gives White a powerful queenside attack (Goganov-Koushnik, World Jr Ch, Chennai, 2011).
• Little better is [font color="purple"]21...Rc7 22.Nc4 Rb8 23.Qb3 Bd7 24.Na5.[/font]
• If [font color="darkorange"]17...Ne8 18.a4 h5 19.h3[/font] then:
• [font color="darkorange"]19...Nh4 20.Qd1 Bf8[/font] then:
• [font color="darkorange"]21.Ra3 Rg7 22.Be1 Nf6 23.Nb1 Ng6 24.Rac3[/font] gives White command of the c-file, better Bishops and more space (Sosonko-Pflichthofer, Op, San Bernardino, California, 1991).
• [font color="burgundy"]21.Nb5 Rg7 22.Rc3 a6 23.Na3 Nf6 24.Nc4[/font] gives White more active Bishops and attacking chances on the queensiode; Black is better on the kingside[/font] gives White more active Bishops (Mkrtchian-Arakahmia, Euro Club Cup W, Plovdiv, 2010).
• If [font color="darkpink"]19...h4?! 20.Ng4! Bxg4[/font] then:
• [font color="darkpink"]21.hxg4 Rc7 22.Be1 a6 23.Qd1 Nf8 24.Bf2[/font] gives White a significant advantage in space.
• [font color="hotpink"]21.fxg4 Nf6 22.a5 Rc8 23.Be1 a6 24.Bf2[/font] gives White the advantage in space.
• If [font color="magenta"]10.Be3 f5 11.f3 f4 12.Bf2 g5[/font] then:
• If [font color="magenta"]13.a4[/font] then:
• If [font color="magenta"]13...Ng6 14.a5[/font] then:
• If [font color="magenta"]14...Rf7[/font] then:
• If [font color="magenta"]15.b4 Bf8[/font] then:
• If [font color="magenta"]16.c5 Nf6[/font] then:
• If [font color="magenta"]17.cxd6 Bxd6 18.Nd3[/font] then:
• If [font color="magenta"]18...Rg7 19.Nc5 Nf8 20.Nb5 g4[/font] then:
• If [font color="magenta"]21.Bh4 h5[/font] then:
• [font color="magenta"]22.Bc4 Qe7 23.Kh1 a6 24.Nxc7 Qxc7 25.Bxf6[/font] gives White more activity and space (Korchnoi-J. Polgar, IT, Pamplona, 1990).
• [font color="burgundy"]22.Nxd6 cxd6 23.Nd3 Ng6 24.Bg5 Nf8 25.Bxf6[/font] gives White a slight advantage in that he can seize command of the c-file (Elliott-Rosch, Corres, 1996).
• [font color="darkpink"]21.Qeq Qe8 22.fxg4 Nxg4 23.Ra3 Qg6 24.Bf3 Qh6[/font] is equal (Korchnoi-Dr. Nunn, IT, Amsterdam, 1990).
• [font color="burgundy"]18...h5 19.Nc5 Nf8 20.Nb5 g4 21.Bh4 Rg7 22.Qb3[/font] gives White a powerful spatial advantage on the kingside (Psakhis-Kiminski, Op, Gronigen, 1993).
• If [font color="darkorange"]17.c6 h5 18.Kh1[/font] then:
• [font color="darkorange"]17...Rh7? 19.cxb7 Bxb7 20.a6 Bc8 21.Nb5 g4 22.Nxa7[/font] gives White an extra pawn, active minor pieces and a small advantage in space (Korchnoi-Xie Jun, Match, Wentzou, 1995).
• [font color="purple"]18...bxc6 19.dxc6 Be6 20.Ba6 Qe8 21.b5[/font] still doesn't give Black a lot of hope.
• [font color="burgundy"]16.Nd3 h5 17.c5 Nf6 18.cxd6 cxd6 19.h3[/font] gives White a small advantage in space (Sammalvuo-Hajenius,Op, Reykjavik, 2011).
• If [font color="darkorange"]15.c5 Nxc5 16.Bxc5 dxc5[/font] then:
• [font color="darkorange"]17.Bc4 Kh8 18.a6 bxa6 19.Bxa6 Bf8[/font] gives White more activity and stronger pawns (Kozul-Dr. Nunn, Euro ChT, Debrecen, 1992).
• If [font color="purple"]17.a6!? b6 18.Bc4 Bf8[/font] then:
• [font color="purple"]19.g4?! Bd6 20.Qe2 h5 21.h3 Rh7[/font] gives Black the advantage on the kingside (Lutz-Gelfand, IT, Munich, 1994).
• [font color="hotpink"]19.d6 c6 20.Nd3 Qxd6 21.Qb3 Qe7[/font] gives Black more kingside space.
• If [font color="darkorange"]14...h5[/font] then:
• If [font color="darkorange"]15.Nb5 Nf6 16.Nxa7 Bd7 17.c5[/font] then:
• If [font color="darkorange"]17...g4? 18.c6![/font] then:
• If [font color="darkorange"]18...g3 19.hxg3 fxg3 20.Bxg3 Rxa7 21.cxd7[/font] then:
• [font color="darkorange"]21...h4 22.Bf2 Ra8 23.Nc2 Bh6 24.Ne3 Bf4 25.Nf5[/font] gives White an extra pawn (not counting the deadwood at d7), an active Knight and the Bishop pair (Korchnoi-Xie Jun, TM, Prague, 1995).
• If [font color="purple"]21...Nxd7[/font] then:
• [font color="purple"]22.f4!? exf4 23.Bf2 Ra8 24.Bxh5 Nde5 25.Bxg6 Nxg6 26.Qh5[/font] gives White an extra pawn, the initiative and a comortable advantage space (W. Schmidt-G. Hernández, Ol, Moscow, 1994).
• [font color="hotpink"]22.Bf2! Ra8 23.Nd3 h4 24.Qd2 Kh7 25.Qe1[/font] gives White an extra pawn and a comortable advantage space; White would profit most from attacking on the queenside.
• [font color="burgundy"]18...bxc6 19.Nxc6 Qe8 20.Ra4 g3 21.hxg3 fxg3 22.Bxg3[/font] gives White an extra pawn (a remote passer), more active pieces and more space (Lekic-Nikolic, Yugoslav ChT Herceg Novi, 2001).
• Black hangs on longer after [font color="darkpink"]17...Rxa7 18.c6 Qa8 19.cxd7 Rxa5 20.Rc1 Qd8 21.Qc2[/font] but the situation is still grim (Sakalauskas-Labuckas, Lithuanian Ch, Kaunas, 2001).
• If [font color="purple"]15.b4!?[/font] then:
• If [font color="purple"]15...Nf6! 16.c5 g4[/font] then:
• [font color="purple"]17.cxd6?! cxd6 18.Nb5 g3 19.hxg3 fxg3 20.Bxg3[/font] gives White only a small advantage in space (Ftacnkk-Smirin, IT, Biel, 1993).
• [font color="darkpink"]17.a6! bxa6 18.Bxa6 h4 19.Bxc8 Qxc8 20.fxg4 Nxg4 21.Qf3[/font] gives White the advantage in space on the queenside and checks Black's advance on the other wing.
• [font color="hotpink"]15...a6!? 16.Na4 Nf6 17.c5 g4 18.cxd6 cxd6 19.Rc1[/font] gives White command of the queenside dark squares
• If [font color="darkorange"]13...a5 14.Nd3 b6[/font] then:
• If [font color="darkorange"]15.b4 axb4 16.Nxb4 Nf6[/font] then:
• If [font color="darkorange"]17.Nd3 h5 18.Nb5[/font] then:
• If [font color="darkorange"]18...g4[/font] then:
• [font color="darkorange"]19.Bh4?! Qd7 20.fxg4 Nxe4! 21.Bf3 Nf6[/font] is equal and soon agreed drawn (Noomen-Hotting, Corres, 2004).
• If [font color="purple"]a) 19.Be1?![/font] then:
• [font color="purple"]19...g3?! 20.hxg3 fxg3 21.Bxg3 Ng6 22.a5 h4 23.Be1[/font] gives White a comfortable advantage in space (Ernazarov-Aleshina. Corres, 2001).
• [font color="hotpink"]19...gxf3! 20.Bxf3 Ng4 21.Bd2 c6 22.dxc6 Nxc6 23.Nf2[/font] is equal.
• [font color="purple"]b) 19.Qd2 gxf3 20.Bxf3 Ng4 21.a5 bxa5 22.Rxa5 Rxa5 23.Qxa5[/font] gives White a fair advantage in space.
• [font color="darkpink"]18...Ng6?! 19.a5! bxa5 20.Be1 g4 21.Rxa5 Rb8 22.Nb4[/font] gives White a queenside attack and a comfortable advantage in space (Kozul-Rogic, Op, Bled, 1997).
• [font color="hotpink"]17.Ra3 Bd7 18.Nb5 Kh8 19.Be1 Rg8 20.g4 fxg3 21.hxg3[/font] is equal (Jussupow-Kasparov, Ol, Yerevan, 1996).
• If [font color="purple"]15.Be1 Nf6[/font] then:
• If [font color="purple"]16.Nf2 h5 17.h3 Kh8 18.Nb5 Neg8 19.b4[/font] then:
• [font color="purple"]19...Rf7 20.bxa5 bxa5 21.c5 Bf8 22.cxd6 cxd6 23.Rc1[/font] gives White more piece activity and a comfortable advantage in space (Nielsen-Kotronias, IT 0304, Hastings, 2004).
• If [font color="hotpink"]19...Nh6 20.bxa5[/font] then:
• If [font color="hotpink"]20...Rg8 21.axb6 cxb6 22.a5 g4[/font] then:
• [font color="hotpink"]23.axb6!? Rxa1 24.Qxa1 gxf3 25.gxf3 Qxb6 26.Kh2[/font] gives White an extra pawn and a slight edge in space (Stull-Schrancz, Corres, 2001).
• [font color="burgundy"]23.hxg4! hxg4 24.Nxg4 Nhxg4 25.fxg4 Bf8 26.Bh4[/font] gives White a comfortable advantage in space and a pin agianst f6.
• [font color="darkpink"]20...bxa5? 21.Bc3 Qe7 22.Qd2 g4 23.Bxa5 gxf3 24.Bxf3[/font] gives White an extra pawn and a comfortable advantage in space.
• [font color="darkorchid"]16.Nb5 g4 17.fxg4 Nxe4 18.Bf3 Ng5 19.Nf2[/font] gives White a small advatgae in space (W. Schmidt-Dobrowolski, Polish ChT, Krynica, 1997).
• If [font color="darkorange"]13.Rc1[/font] then:
• [font color="darkorange"]13...Ng6 14.c5 Nxc5 15.b4 Na6[/font] then:
• If [font color="darkorange"]16.Nb5 Bd7 17.Nxa7[/font] then:
• If [font color="darkorange"]17...h5?![/font] then:
• If [font color="darkorange"]18.a4 Rf7[/font] then:
• If [font color="darkorange"]19.Nb5?![/font] then:
• If [font color="darkorange"]19...Bh6?! 20.Rc4 Rg7[/font] then:
• If [font color="darkorange"]21.Kh1 Nf8 22.g3 fxg3 23.Bxg3 Ng6 24.Nd3[/font] then:
• If [font color="darkorange"]24...Nf4 25.Bxf4 gxf4 26.Rg1[/font] then:
• [font color="darkorange"]26...Rxg1+ 27.Qxg1+ Kh7 28.Qc1 Qg5 29.Qf1[/font] draw (Krivoshey-Golubov, Corres, 1999).
• [font color="darkpink"]26...Bg5 27.Bf1 Bh4 28.Rxg7+ Kxg7[/font] is equal (S. Atalik-Timoshchenko, Romanian ChT, Timis de Sus, 1998).
• If [font color="purple"]24...Kh7 25.Rg1[/font] then:
• [font color="purple"]25...Rf7?! 26.Bf2! Be8 27.Nc3 Nb8 28.Qc2[/font] gives White a fair advantage in space (Yerminisky-Kindermann, FIDE Knock Out, Groningen, 1997).
• [font color="hotpink"]25...Nf4 26.Nxf4 gxf4 27.Bf2 Rxg1+ 28.Qxg1 Bh3[/font] remains equal.
• [font color="burgundy"]21.Nd3 Qf6 22.h3 Nh4 23.Qe1 Rf8 24.Nxc7[/font] is equal.
• [font color="daprkink"]19...h4! 20.h3 Nxb4 21.Qb3 Na6 22.Nd3 Bf8 23.Qc4[/font] gives Black an extra pawn and White more space.
• [font color="darkorchid"]19.Rb1! Qe8 20.Nb5 Qe7 21.Nc3 Nh4 22.Nd3[/font] gives White activity on the queenside.
• If [font color="purple"]18.Bxa6 bxa6[/font] then:
• If [font color="purple"]19.Qc2 Rf7 20.Qxc7[/font] then:
• [font color="purple"]20...Qf8 21.Qb7 Bb5 22.Qxa8 Qxa8 23.Rc8+ Qxc8 24.Nxc8 Bf8[/font] gives Black a slight edge as he is about to go up an exchange (Kesten-Jorczik, Op, Bad Wörishofen, 2008).
• [font color="darkpink"]20...Qxc7 21.Rxc7 g4 22.Nc6 Bf6 23.fxg4 hxg4 24.Nd3 Bd8 25.Nxd8[/font] wins the exchange to go with White's extra pawn (Leotard-Lexa, Corres (?), 2004).
• [font color="hotpink"]19.Qd3 g4 20.Kh1 g3 21.Bg1 Qh4 22.Qxa6[/font] gives White a passed pawn, an attack on a backward pawn and a comfortable advantage in space (Gejendra-Vishnu, Commonwealth Ch, Nigpur, 2008).
• [font color="#FFACDC"]17...Rf7 18.Bxa6 bxa6 19.Qc2 Be8 20.Qe2 h5 21.Qxa6[/font] remains equal (D. Gurevich-Becerra Rivero, Op, Las Vegas, 2007).
• If [font color="purple"]16.Nd3[/font] then:
• If [font color="purple"]16...Rf7 17.Nb5[/font] then:
• If [font color="purple"]17...Bd7 18.a4 h5 19.Nxa7 Bf8 20.Nb5 Rg7[/font] then:
• [font color="purple"]21.Be1 c6 22.Nc3 Nc7 23.Nf2 Kh8 24.a5 Rb8 25.h3[/font] gives White the advantage in space, mostly localized on the queenside (Peralta-Inarkiev, World Cup, Khanty-Mansiysk, 2007).
• If [font color="hotpink"]21.Rc4?![/font] then:
• [font color="hotpink"]21...Nh8?![/font] then:
• [font color="hotpink"]22.g4?! hxg4![/font] (Black has equalized) [font color="hotpink"]23.fxg4 Rh7 24.Qc2 Qf6 25.Kh1 Be7 26.Bg1 Bd8 27.Nc3[/font] draw (Zugrav-Rohde, Corres, 2002).
• [font color="darkpink"]22.h3 Nf7 23.Rc2 c6 24.dxc6 bxc6 25.Nc3[/font] gives White a comfortable advantage in space
• [font color="burgundy"]21...Nh4 22.Be1 g4 23.fxg4 hxg4 24.g3 Nf3+[/font] is equal.
• If [font color="hotpink"]17...b6 18.Be1 h5 19.Nf2 Bf6[/font] then:
• [font color="hotpink"]20.h3 Bb7 21.Rc2 Qd7 22.Qd3 Bd8 23.Bd2[/font] gives White a small advantage in space (Topalov-Radjabov, IT, Nanjing, 2009).
• [font color="darkpink"]20.a3 Qd7 21.Rc3 Bd8 22.Qc2 Nb8 23.a4[/font] gives White a small advantage in space (Nielsen-Livatsky, Bundesliga 0708, Germany, 2007).
• If [font color="hotpink"]16...h5 17.Nb5 Bd7 18.a4 Bh6 19.Rc3[/font] then:
• If [font color="hotpink"]19...b6 20.Be1 Rf7 21.Nf2[/font] then:
• If [font color="hotpink"]21...Nh4 22.Nxd6 cxd6 23.Bxa6 Qe8 24.Qe2 g4 25.fxg4[/font] gives White a fair edge in space aginst Black's stronger pawns (Piket-Kasparov, IT, Linares, 1997).
• If [font color="darkpink"]21...Bc8 22.Rc4 Nh4 23.h3 Qf6[/font] then:
• [font color="darkpink"]24.Qc2?! g4! 25.hxg4 hxg4 26.Nxd6 gxf3 27.Nxf7[/font] is equal (Bonatti-Monacell, Corres, 2000).
• [font color="burgundy"]24.Qb3! Bd7 25.Rc2 Bf8 26.Na3 Bc8 27.Nd3[/font] gives White a comfortable advantage in space.
• [font color="darkpink"]19...Rf7 20.Nxa7 Rg7 21.Nb5 Nf8 22.h3 Nh7 23.Be1[/font] gives White a comfortable advantage in space (Korchnoi-Cvitan, Euro ChT, Pula, 1997).
• If [font color="purple"]a) 13...Rf6 14.Nd3 Rh6 15.c5[/font] then:
• [font color="purple"]15...Qe8 16.Nb5 Qh5 17.h4 Ng6 18.g4 fxg3 19.Bxg3[/font] gives White a substantial advantage in space (Krush-Dembo, OlW, Khanty-Mansiysk, 2010).
• If [font color="hotpink"]15...a6[/font] then:
• If [font color="hotpink"]16.c6 bxc6 17.dxc6[/font] then:
• If [font color="hotpink"]17...Nf8 18.Nb4 Qe8 19.Kh1 Ne6 20.Ncd5[/font] then:
• [font color="hotpink"]20...Ng6 21.Rc3 Nh4 22.Nc2 Kh8 23.b4 Bf8 24.Qe1[/font] gives White a strong advaantage in space with good diagonals for the Bishops (Grabliauskas-Zickus, Euro Club Cup, Fügen, 2006).
• [font color="burgundy"]20...Nxd5 21.Nxd5 Kh8 22.b4 Qf7 23.Qd3 Nd4 24.Bd1 Be6 25.Re1[/font] is equal (Rogovski-Radjabov, IT, Alushta, 2001).
• [font color="darkpink"]17...Nxc6 18.Nxf4 Nd4 19.Nfd5 Nf8 20.Bc4 Kh8 21.Ne2[/font] gives White a better center, but Black maintains his share of it Bluvshtein-Inarkiev, Aeroflot Op, Moscow, 2004).
• [font color="#FF8080"]16.cxd6 cxd6 17.a4 Qe8 18.Be1 Nf6 19.Nf2 Rg6 20.a5[/font] gives White more freedom (Dambacher-Ponomariov, Euro Club Cup, Kallithea, 2008).
• If [font color="purple"]b) 13...a6 14.Nd3[/font] then:
• If [font color="purple"]14...b6 15.b4 Rf6 16.c5 Rh6 17.cxd6 cxd6[/font] then:
• If [font color="purple"]18.b5 Qe8 19.Kh1[/font] then:
• [font color="purple"]19...a5 20.Na4 Rb8 21.Ndb2 Nf6 22.Nc4 Nh5 23.Qe1[/font] gives White a tremendous advantage with a plan to capture both of Black' queenside pawns (Krush-Zenyuk, US ChW, St. Louis, 2011).
• [font color="darkpink"]19...Nf6 20.bxa6 Qh5 21.Bg1 Qg6 22.Nf2 Nh5 23.Nh3[/font] is equal (Berkvens-Inarkiev, Ruro Club Cup. Antalya, 2007).
• [font color="burgundy"]18.g4 fxg3 19.hxg3 Ng6 20.Kg2 Nf6 21.Rh1 Rxh1 22.Qxh1[/font] gives White the advantage in space (Khalifman-Inarkiev, World Cup, Khanty-Mansiysk, 2005).
• [font color="hotpink"]14...Rf6 15.c5 Rh6[/font] transposes into [font color="hotpink"]Grabliauskas-Zickus[/font] and its branches, above.
• [font color="magenta"](Bayonet Attack)[/font] If [font color="magenta"]9.b4 Nh5 10.c5[/font] then:
• If [font color="magenta"]10...Nf4 11.Bxf4 exf4 12.Rc1[/font] then:
• If [font color="magenta"]12...h6[/font] then:
• [font color="magenta"]13.Nd4 a6 14.h3 Kh8 15.Qd2 Ng8 16.Rfd1[/font] gives White a significant advantage in space and a slight initiative (Ivanchuk-Grischuk, Grand Prix, Nalchik, 2009).
• If [font color="darkorange"]13.h3 g5[/font] then:
• If [font color="darkorange"]14.a4 Ng6 15.a5 Re8 16.Nd2[/font] then:
• If [font color="darkorange"]16...f5 17.cxd6 cxd6[/font] then:
• [font color="darkorange"]18.exf5?! Bxf5! 19.Nb5 Bb2[/font] is equal (Sosonko-van Wely, Dutch Ch, Amsterdam, 1995).
• White wins the exchange after [font color="burgundy"]18.Bh5! Qf6 19.Nb5 fxe4 20.Nc7.[/font]
• [font color="hotpink"]16...Ne5 17.cxd6 cxd6 18.Nb5 Re7 19.Qc2 a6 20.Nd4[/font] gives White command of the c-file and a fair advandage in space (Diesen-Day, Op, Lone Pine, California, 1977).
• [font color="purple"]14.Nd4 Ng6 15.Bg4 Bxg4 16.hxg4 Bxd4 17.Qxd4[/font] gives White a small advantage in space (Larsen-Uhlmann, IT, Zagreb, 1965).
• If [font color="darkorange"]12...a5 13.cxd6 cxd6 14.Nb5[/font] then:
• If [font color="darkorange"]14...axb4 15.Qb3 Bg4 16.Rc7[/font] then:
• If [font color="darkorange"]16...Nc8 17.Rxb7 Qa5[/font] then:
• If [font color="darkorange"]18.Bc4?![/font] then:
• If [font color="darkorange"]18...Nb6 19.Rc7 Nxc4 20.Qxc4 Rfc8 21.Rc6 Rxc6[/font] then:
• If [font color="darkorange"]22.Qxc6 Qxa2 23.Nxd6[/font] then:
• [font color="darkorange"]23...Qa7?! 24.Nb5 Qa6 25.Nfd4 Bxd4 26.Qxa6 Bxf2+[/font] gives Black an extra pawn (Grivas-Murey, IT, Tel Aviv, 1991).
• [font color="burgundy"]23...Bxf3! 24.gxf3 b3 25.Qb7 Rf8 26.Nc8 b2[/font] puts Black on the doorstep of victory.
• [font color="darkpink"]22.dxc6?[/font] then Black wins after [font color="darkpink"]22...Be6 23.Qd3 Qa6 24.c7 Bd7 25.Rd1 Bxb5.[/font]
• [font color="darkorchid"]18...Bxf3! 19.gxf3 Nb6 20.Rb1 Nxc4 21.Qxc4 Be5[/font] is equal (Grivas-Cooper, Ol, Novi Sad, 1990).
• [font color="#B93B8F"]18.Bd3! Qa6 19.Rc7 Qa5 20.Rb7 Qa6 etc.[/font] draws.
• [font color="hotpink"]16...Re8 17.Rfc1 Bc3 18.Rxb7 Bc8 19.Ra7 Rxa7 20.Nxa7[/font] gives White a small advantage in space (Bönsch-Uhlmann, IT, Potsdam, 1985).
• [font color="purple"]14...Bg4 15.Rc7 axb4 16.Qd2 Bxf3 17.Bxf3 Be5 18.Rxb7[/font] is equal (Kamsky-Kasparov, Rpd Grand Prix, New York, 1994).
• If [font color="darkorange"]10...f5[/font] then:
• If [font color="darkorange"]11.Ng5[/font] then:
• If [font color="darkorange"]11...Nf4 12.Bc4 h6[/font] then:
• If [font color="darkorange"]13.Ne6 Bxe6 14.dxe6 fxe4[/font] then:
• If [font color="darkorange"]15.Nd5?![/font] then:
• [font color="darkorange"]15...Nfxd5! 16.Bxd5 c6 17.cxd6 Nxd5 18.e7 Nxe7 19.dxe7 Qxe7 20.Qg4[/font] gives Black a fair advantage in space (Karlsson-Olsson, Swedish Ch, Linkoping, 2001).
• [font color="burgundy"]15...Kh7?! 16.Be3! Nxe6 17.Nxc7 Qxc7 18.Qxd6 Qxd6 19.cxd6 Nd4 20.dxe7 Rfe8 21.Bd5 Nc2 22.Bc5 Nxa1 23.Rxa1 b6 24.Bxa8 bxc5[/font] draw (Reifer-Jansa, Czechoslovakian Ch, Kosice, 1961).
• [font color="darkpink"]15.Rb1! d5 16.Bxf4 dxc4 17.Be3 Nf5[/font] remains equal.
• [font color="#C08040"]13.Nf3 fxe4 14.Nd2 Nf5 15.Ncxe4 Qh4 16.Re1 Nd4[/font] is equal (Jakobetz-Tiemann, Corres, 2001).
• If [font color="purple"]11...Nf6 12.f3[/font] then:
• [font color="purple"]12...Kh8?! 13.Be3![/font] (White has a significant advantage in space) [font color="purple"]13...Bh6 14.Nf7+ Rxf7 15.Bxh6[/font] then:
• If [font color="purple"]15... f4 16.Rc1 Neg8 17.Bg5[/font] then:
• If [font color="purple"]17...Rg7 18.g4 h5 19.h3 Rh7 20.Kg2 Bd7 21.Rh1[/font] continues to give White a sigficant advantage in space, but he needs to find a place to break through (Bacrot-Radjabov, FIDE Knock Out, Tripoli, 2004).
• [font color="#FF8080"]15...a5 16.a3 Kg8 17.Qe1 axb4 18.axb4 Rxa1 19.Qxa1[/font] continues to give White a sigficant advantage.
• [font color="darkpink"]17...h6 18.Bh4 g5 19.Bf2 Rg7 20.Qc2 g4 21.Bh4[/font] gives White more freedom and a more space (Najdorf-Cuartas Bedoya, IT, Buenos Aires, 1973).
• If [font color="hotpink"]12...h6! 13.Ne6 Bxe6 14.dxe6[/font] then:
• [font color="hotpink"]14...d5 15.exd5 Nfxd5 16.Nxd5 Qxd5 17.Qxd5 Nxd5[/font] is equal (Dub-Dobos, 1st Saturday July, Budapest, 2001).
• [font color="darkpink"]14...dxc5?! 15.Qxd8 Rfxd8 16.bxc5 Bf8 17.Be3 f4 18.Bf2[/font] gives White a fair advantage in space.
• If [font color="purple"]11.Re1 Nf6 12.Bg5 h6 13.Bxf6 Bxf6 14.Rc1[/font] gives White a slight advantage in space (Kramnik-Topalov, IT, Novgorod, 1996).

7...exd4

• If [font color="red"]7...Nbd7 8.0-0 c6[/font] then:
• If [font color="red"]9.d5 c5 10.Ne1 Ne8[/font] then:
• If [font color="red"]11.Nd3 f5 12.f4[/font] then:
• If [font color="red"]12...b6 13.Qd2 Qe7 14.Bf3[/font] then:
• [font color="red"]14...g5 15.fxg5 f4 16.Bf2 Qxg5 17.b4 Ndf6[/font] gives White a stronger center and a safer King (Batchuluun-Li Shilong, Asian Ch, Manila, 2007).
• [font color="burgundy"]14...Nef6 15.Rae1 Ng4 16.Bxg4 fxg4 17.f5 gxf5 18.exf5[/font] gives White a comfortable advantage in space (Ekeberg-Bjarnason, Nordic Ch, Bergen, Norway, 1996).
• [font color="darkpink"]12...g5 13.fxe5 Nxe5 14.Nxe5 Bxe5 15.exf5 Bxf5[/font] gives White a small advantage in space (Tal-Dr. Nunn, TM, London, 1984).
• If [font color="darkred"]11.g4 f5 12.gxf5 gxf5 13.exf5[/font] then:
• If [font color="darkred"]13...Nb6[/font] then:
• If [font color="darkred"]14.Nf3 Bxf5 15.Ng5 Nf6[/font] then:
• [font color="darkred"]16.Kh1 Qe7 17.Rg1 Kh8 18.Rg3 e4 19.Qd2[/font] gives White a better center, slightly stronger pawns and a small advantage in space (Shen Yang-Li Shilong, Asian Ch, Manila, 2007).
• [font color="purple"]16.a4 Qe7 17.a5 Nbd7 18.a6 b6 19.Nb5[/font] gives Black slightly stronger pawns against White's comfortable advantage in space (Wells-Areshchenko, IT, Coventry, 2005).
• If [font color="magenta"]14.Kh1 Bxf5[/font] then:
• If [font color="magenta"]15.Rg1 Kh8 16.Nf3 e4 17.Ng5[/font] then:
• [font color="magenta"]17...Bxc3 18.bxc3 Qe7 19.Rg3 Nf6 20.Qd2 Nbd7 21.Rag1[/font] gives White more space and freedom against Black's slightly better pawns (Ionov-Kuzmin, Russian Ch Qual, St. Petersburg, 2004).
• [font color="hotpink"]17...Qe7 18.Qd2 Nf6 19.Rg3 Nfd7 20.Rag1 Rg8 21.b3[/font] gives White better command of the g-file and a small advantage in space (Karavade-Areschenko, Op, Dubai, 2005).
• [font color="darkorange"]15.Nf3 e4 16.Ng5 Qe7 17.Rg1 Nf6 18.Qd2[/font] gives White a better center and a small advantage in space (Sielecki-Movsesian, Op, Groningen, 1997).
• [font color="darkorchid"]13...Ndf6 14.Bd3 e4 15.Nxe4 Nxe4 16.Bxe4 Qh4 17.Qc2[/font] gives White two extra pawns (Avrukh-Plakalovic, IT, Euro Club Cup, Plovdiv, 2010).
• If [font color="darkred"]9.Qc2 Ng4 10.Bg5 f6[/font] then:
• If [font color="darkred"]11.Bd2 f5[/font] (I guess we can call this the Uhlmann-Knaak variation; they had a 14-year long theoretical discussion about this position covering 13 games) [font color="darkred"]12.exf5[/font] then:
• If [font color="darkred"]12...gxf5 13.dxe5 dxe5 14.Ng5 Ndf6[/font] then:
• If [font color="darkred"]15.Rad1 Qe7[/font] then:
• [font color="darkred"]16.c5 Kh8 17.b4 Nh6 18.Bc4 f4 19.Rfe1[/font] gives White better King safety and a significant advantage in space (Uhlmann-Knaak, IT, Halle, 1981).
• [font color="burgundy"]16.Qc1 Bd7 17.b4 Kh8 18.f3 Nh6 19.c5[/font] gives White a small advantage in space (Uhlmann-Knaak, IT, Szirak, 1985).
• [font color="darkpink"]15.Kh1 Qe8 16.f3 Nh6 17.Rae1 Nh5 18.Bd3[/font] gives White a small advantage in space (Uhlmann-Knaak, East German Ch, Nordhausen, 1986).
• If [font color="magenta"]12...exd4 13.Nxd4 Bxd4 14.Bxg4[/font] then:
• If [font color="magenta"]14...Ne5 15.Bh3[/font] then:
• If [font color="magenta"]15...Bxf5 16.Bxf5 Rxf5 17.Ne2[/font] then:
• [font color="magenta"]17...Qh4 18.Nxd4 Qxd4 19.Bc3 Qxc4 20.Rad1 Raf8 21.Rxd6 Nf3+ 22.gxf3 Rg5+[/font] White resigns one move ahead of mate (Szabo-Ivkov, Euro ChT, Bath, 1973).
• [font color="hotpink"]17...Bb6 18.Ng3 Rf7 19.Ne4 d5 20.Ng5 Rf5 21.c5[/font] is equal (Sterud-Anton, Corres, 1984).
• [font color="purple"]15...Qh4 16.Ne2 Bb6 17.Bf4 Bxf5 18.Bxf5 Rxf5[/font] gives Black a lot more activity and a significant advantage in space (Möhring-Plachetka, IT, Trnava, 1979).
• [font color="darkorange"]14...Qh4?! 15.Be2! Nc5 16.g3 Qf6 17.fxg6 Bf5 18.Qc1[/font] gives White the advantage in space.
• If [font color="magenta"]11.Bh4 Nh6[/font] then:
• [font color="magenta"]12.dxe5 dxe5 13.b4 Nf7 14.Nd2 Qe7 15.c5 Re8 16.Nb3[/font] gives White the advantage in space (Kotronias-Skalkotas, Op, Athens, 1988).
• [font color="darkorange"]12.Rad1 Qe7 13.b4 Nf7 14.dxe5 dxe5 15.c5 Re8 16.Nd2 Nf8 17.f3 Ne6 18.Nb3[/font] gives White the advantage in space (W. Schmidt-Ingo, Op, Dresden, 1993).

8.Nxd4 Re8 9.f3 c6 10.Bf2

• If [font color="red"]10.Qd2 d5 11.exd5 cxd5 12.0-0[/font] then:
• If [font color="red"]12...Nc6[/font] then:
• If [font color="red"]13.Rad1 Nxd4 14.Bxd4 dxc4 15.Bxc4[/font] then:
• If [font color="red"]15...Be6 16.Bb5 Rf8 17.Qf2 Qa5 18.Qh4[/font] then:
• [font color="red"]18...Nh5 19.Bxg7 Kxg7 20.Qd4+ Kg8 21.b4[/font] draw (Alexandrova-Dolzhikova, Ukrainian ChW, Kramatorsk, 2001).
• [font color="burgundy"]18...a6 19.Ba4 b5 20.Bb3 Bxb3 21.axb3 Rfd8 22.Kh1[/font] is equal and shortly agreed drawn (Tal-Yurtaev, TT, Moscow, 1983).
• If [font color="darkred"]15...a6 16.Rfe1[/font] then:
• [font color="darkorange"]16...Bf5 17.g4 Rxe1+ 18.Qxe1 Qc7 19.Bxf6 Bxf6 20.Nd5[/font] gives White a strong initiative with Black's Queen and both Bishops under attack (Polugaevsky-M. Gurevich, IT 9091, Reggio Emilia, 1991).
• [font color="magenta"]16...Bd7 17.Qf4 Rxe1+ 18.Rxe1 Rc8 19.Bb3 Bc6 20.h4[/font] gives White a small advantage in space (Su. Polgar-Wojtkiewicz, Rubinstein Mem, Polanc Zdroj, 1991).
• If [font color="darkred"]13.c5 Rxe3 14.Qxe3 Qf8[/font] then:
• If [font color="darkred"]15.Nxc6 bxc6[/font] then:
• [font color="darkred"]16.Kh1 Rb8 17.Na4 Rb4 18.b3 Be6 19.Nb2 Nh5 20.Nd3 Rh4 21.Qf2 Qe7 22.g4 Bd4 23.Qxd4 Rxh2+ 24.Kxh2 Qh4+[/font] draw (Karpov-Kasparov, World Ch Match, New York, 1990).
• [font color="darkorange"]16.Na4 Bf5 17.Rfe1 d4 18.Qa3 Nd5 19.Bd3 Be6[/font] gives White an overproteced c-pawn and a slight advantage in space; Black has a central passer, which White has blockaded (Hillarp Persson-Spassov, Op, Salou, Spain, 2005).
• [font color="magenta"]15.Ncb5 Qxc5 16.Rac1 Qb6 17.Qf2 Bd7 18.Rfd1 Re8[/font] is equal (Kasparov-Gelfand, IT, Linares, 1992).
• If [font color="darkred"]12...dxc4 13.Rad1 a6 14.Bxc4[/font] then:
• If [font color="darkred"]14...b5 15.Bb3 Bb7[/font] then:
• If [font color="darkred"]16.a4[/font] then:
• If [font color="darkred"]16...bxa4 17.Bxa4 Nbd7 18.Nb3[/font] then:
• [font color="darkred"]18...Qe7 19.Rfe1 Qb4 20.Qf2 Re5 21.Nc1 Re7 22.Rd4[/font] gives White a small advantage in space and the initiative (Reshevsky-Glicoric, IT, Los Angeles, 1963).
• If [font color="magenta"]18...Qc8 19.Na5 Re5 20.b4 Bf8[/font] then:
• [font color="magenta"]21.Bf4 Bxb4 22.Bxe5 Nxe5 23.Nxb7 Bxc3 24.Qe3[/font] gives White the initiative and a small advantage in space (Reshevsky-Ju. Bobolchán, IT, Mar del Plata, 1966).
• If [font color="darkorange"]21.Bxd7 Nxd7 22.Bf4 Bxb4 23.Nxb7 Qxb7[/font] then:
• [font color="darkorange"]24.Qxd7 Qxd7 25.Rxd7 Bxc3 26.Bxe5 Bxe5 27.Rfd1[/font] gives White the exchange and a Rook on the seventh rank; Black has a passed pawn.
• [font color="purple"]24.Bxe5 Nxe5 25.Qd4 Qa7 26.Na4 a5 27.Qxa7 Rxa7 28.Rd5[/font] gives Black the exchange, a blockade on Black's passer and the initiative.
• If [font color="magenta"]16...b4 17.Ne4 Qe7[/font] then:
• [font color="magenta"]18.Nc2?! Bxe4 19.fxe4 Nc6 20.Bg5 Rad8 21.Bd5[/font] is equal (Reshevsky-Puri, Op, Philadelphia, 1986).
• If [font color="darkorange"]18.Bg5![/font] then:
If
• [font color="darkorange"]18...Nbd7?! 19.Nf5! gxf5 20.Nd6[/font] then:
If
• [font color="darkorange"]20...Reb8? 21.Rfe1 Qf8 22.Nxf7 Bd5[/font] then:
• [font color="darkorange"]23.Bxd5?! Qc5+ 24.Kf1 Qxd5 25.Qxd5 Nxd5 26.Rxd5[/font] gives White an extra pawn, the initiative and more space (Wade-Horton, British Ch, Rhyl, 1969).
• [font color="burgundy"]23.Nh6+ Kh8 24.Bxd5 Qc5+ 25.Kf1 Qxd5 26.Qxd5 Nxd5 27.Rxd5[/font] leaves White a pawn up with an overwhlming position.
• [font color="hotpink"]20...Ne5 21.f4 Ne4 22.Bxe7 Nxd2 23.Nxe8 Nxf1 24.Nxg7[/font] gives White command of the d-file, stronger pawns and the Bishop pair.
• [font color="purple"]18...Bxe4 19.fxe4 Nbd7 20.Bd5 Rac8 21.Kh1[/font] gives White the Bishop and a small advantage in space, but also an isolated pawn.
• If [font color="magenta"]16.Bh6 Bxh6 17.Qxh6 Nbd7 18.Ne4[/font] then:
• [font color="magenta"]18...Qb6 19.Ng5 Re7 20.Kh1 Nf8 21.Rd2 Bd5[/font] is equal (van Wely-Bacerra Rivero, Capablanca Mem, Havana, 1995).
• [font color="darkorange"]18...Bxe4 19.fxe4 Qe7 20.Qg5 Qxe4 21.Nxb5 axb5 22.Bxf7+[/font] is equal (Savon-Geller, Soviet Ch, Moscow, 1969).
• If [font color="magenta"]14...Nbd7[/font] then:
• [font color="magenta"]15.a4 Ne5 16.Ba2 Bd7 17.Bh6 Qb6 18.Bxg7 Kxg7[/font] is equal (Wade-Penrose, British Ch, Rhyl, 1969).
• [font color="darkorange"]15.Rfe1 b5 16.Bb3 Bb7 17.Bf2 Rxe1+ 18.Qxe1[/font] gives White a small advantage in space (Halkias-Kantsler, Rpd IT, Panormo, Greece, 2001).
• If [font color="blue"]10.0-0 d5 11.cxd5[/font] then:
• If [font color="blue"]11...Nxd5 12.Nxd5 cxd5[/font] then:
• If [font color="blue"]13.Qb3 Nc6 14.Rad1[/font] then:
• If [font color="blue"]14...Nxd4 15.Bxd4 Bxd4+ 16.Rxd4 Qf6[/font] then:
• If [font color="blue"]17.Rd2 Qf4 18.Qxd5[/font] then:
• If [font color="blue"]18...Qe3+ 19.Rf2 Be6[/font] then:
• [font color="blue"]20.Qd3 Qb6 21.Qb5 Qe3 22.Qd3 Qb6 23.Qb5 Qe3 24.Rd3 Qc1+ 25.Rf1[/font] gives White a fair advantage in space (Gustafsson-Kotronias, Euro Club Cup. Kemer, 2007).
• [font color="#80ACDC"]20.Qd4 Qxd4 21.Rxd4 Bxa2 22.Rd7 Rab8 23.Bb5 Re5[/font] gives White a slight advantage in space (Yevseev-Kotronias, IT 0506, Reggio Emilia, 2005).
• [font color="steelblue"]18...Be6 19.Qd4 Rad8 20.Qxd8 Qe3+ 21.Rf2 Rxd8 22.Rxd8+[/font] gives White an extra pawn (Hess-Naroditsky, Op, Groningen, 2011).
• [font color="slateblue"]17.Qxd5 Be6 18.e5 Bxd5 19.exf6 Rxe2 20.Rxd5 Rxb2[/font] draw (Lima-Kasparov, SX, Rio de Janeiro, 1996).
• [font color="darkcyan"]14...Qa5 15.Nb5 dxe4 16.Nd6 Re7 17.Bc4 Ne5 18.Rd5[/font] gives White a small advantage in space (Dolmatov-Yurtaev, Soviet Ch 1st League, Sverdlovsk, 1984).
• [font color="dodgerblue"]13.Rc1 Nc6 14.Nxc6 bxc6 15.Rxc6 Bb7 16.Rc1 dxe4 17.Qxd8 Raxd8[/font] is equal (Gustafsson-Maze, Euro Ch, Aix-les-Bains, 2011).
• If [font color="darkblue"]11...cxd5 12.Qb3[/font] then:
• If [font color="darkblue"]12...dxe4 13.Bc4 Rf8 14.Rad1 Qe7[/font] then:
• If [font color="darkblue"]15.fxe4 Nc6 16.Nd5 Nxd5 17.Nxc6 bxc6 18.exd5[/font] gives White a small advantage in space (Nei-Stein, Soviet Ch, Tbilisi, 1967).
• [font color="darkcyan"]15.Nxe4 Nxe4 16.fxe4 Nd7 17.h3 Ne5 18.Bd5[/font] gives White a better center and a fair advantage in space (Tisdall-Mortensen, IT, Aarhus, 1983).
• [font color="dodgerblue"]12...Nc6 13.Rad1 Qe7 14.Nxd5 Nxd5 15.Qxd5 Nxd4 16.Bxd4[/font] gives White a fair advantage in space (R. Bytnr-Gligoric, Vidmar Mem, Ljubljana, 1969).

10...d5

• If [font color="red"]10...Nbd7 11.0-0[/font] then:
• If [font color="red"]11...d5 12.exd5 cxd5 13.Ndb5 dxc4[/font] then:
• [font color="red"]14.Nd6 Rf8?! 15.Bxc4 Ne5 16.Bb3 Be6 17.Bxe6 fxe6 18.Nxb7[/font] (Sasikiran-Wajih, Indian Ch, New Delhi, 2001).
• If [font color="darkred"]14.Bxc4[/font] then:
• [font color="darkred"]14...a6? 15.Nd6! Rf8 16.Re1 b5 17.Bb3 Rb8 18.Qe2[/font] gives White an overwhelming advantage in space (Kosic-Vojnivic, Yugoslav ChT, Herceg Novi, 2001).
• [font color="magenta"]14...Ne5 15.Qxd8 Rxd8 16.Bb3 Bf5 17.Bxa7[/font] gives White an extra pawn.
• [font color="darkorchid"]11...Nh5 12.Re1 Nf4 13.Bf1 Ne5 14.Qd2 g5 15.Be3[/font] [gives White a small advantage in space; Black's Knights look splendid, but neioter of them can move forward.]().

11.exd5 cxd5 12.0-0 Nc6 13.c5 Nh5

• If [font color="red"]13...Re5[/font] then:
• If [font color="red"]14.Bb5 Bd7 15.Qa4 Rc8[/font] then:
• [font color="red"]16.Rfe1 Rxe1+ 17.Rxe1 Nxd4 18.Bxd4 Bc6 19.Qd1 Qa5[/font] is equal (Onischuk-Bacrot, IT, Poikovsky, 2011).
• [font color="magenta"]16.Rad1 Nh5 17.g3 a6 18.Bxc6 Bxc6 19.Nxc6[/font] gives White a small adavtage in space; his pressure in the center is very effective (Shulman-Feller, IT, Texas Tech U, 2011).
• [font color="darkred"]14.Re1 Bd7 15.Qb3 Nh5 16.Qxb7 Nxd4 17.Bxd4[/font] gives White an extra pawn (S. Volkov-Gallgher, Euro Ch, Aix-les0Bains, 2011).

14.Qd2 Be5 15.g3 Ng7

• [font color="red"]15...Bh3 16.Rfe1 Nf6 17.Ncb5 h5 18.b4 a6 19.Nd6[/font] gives White a slight advantage after the ensuing exchanges starting with 19...Bxd5! (El Debs- Hollemaert, IT, São Paulo. 2008).

16.Rfd1 Bf5!? (N)

• If [font color="red"]16...Be6 17.Nxe6[/font] then:
• If [font color="red"]17...fxe6 18.f4 Bf6 19.Nb5[/font] then:
• If [font color="red"]19...Rf8[/font] then:
• [font color="red"]20.Rab1 a6 21.Nd6 Ne8 22.Nxe8 Qxe8 23.b4 Rd8[/font] gives White the advantage on the queenside (Sasikiran-Thipsay, Asian Ch, Calcutta, 2001).
• [font color="burgundy"]20.Nd6 Rb8 21.Rac1 b6 22.Bb5 bxc5 23.Bxc6 Rxb2 24.Qe1[/font] (Onischuk-Kasimdzhanov, Grand Prix, Moscow, 2002).
• If [font color="darkred"]19...Be7 20.Rac1[/font] then:
• [font color="darkred"]20...a6 21.Nd4 Bf6 22.Nf3 Qa5 23.Qxa5 Nxa5 24.b4[/font] gives White better pawns and the initiative (Khalifman-Akopian, FIDE Knock Out, Las Vegas, 1999).
• [font color="magenta"]20...Rf8 21.Rc2 Qd7 22.a3 Rf7 23.Qe1 Nf5 24.Bg4[/font] gives White preessure in the center and better pawns.
• [font color="darkorchid"]17...Nxe6 18.Qxd5 Bxc3 19.bxc3 Qf6 20.Kf1 Qxc3[/font] is equal (Markus-And. Volokitin, Bosnian League, Neum, 2005).

17.Bb5

• The game is equal.
• [font color="red"]17.Ndb5! d4 18.Bxd4 Nxd4 19.Nxd4 Qe7 20.f4[/font] is also equal.

17...Bd7?!

• This inaccuracy gives White the early advantage.
• [font color="red"]17...Bxd4! 18.Bxd4 Ne6 19.Bxc6 bxc6 20.Re1[/font] remains equal.

[center]BLACK: Andrey Vovk[/center]

[center][/center]

[center]WHITE: Wang Yue[/center][center]Position after 17...Bf5d7[/center]

18.Nb3!

• White preserves his Knight, which is now defending the pawn at c5. He now has a fair advantage with stronger pawns (Black's isolated pawn is a target) and more space.

18...Ne7?!

• Black cuts the communication from the Queen to the Bishop, making the Bishop a less effective bulwark in the center.
• If [font color="red"]18...Qf6 19.f4 Bxc3 20.Qxc3 Qxc3 21.bxc3[/font] then:
• [font color="red"]21...Be6 22.Nd4 Rac8 23.Nxe6 fxe6 24.c4 Rcd8 25.a4[/font] continues to give White a fair advantage in space.
• [font color="darkred"]21...a6!? 22.Rxd5! Be6 23.Bxc6! bxc6 24.Rd6 Rac8 25.Na5[/font] ties up Black's pieces defending the c-pawn.

19.Bxd7!?

• White misses an opportunity to take a greater advantage.
• If [font color="red"]19.Bd4! Bxb5[/font] then:
• If [font color="red"]20.Bxe5! Bc4 21.Bxg7 Kxg7 22.Ne4[/font] then:
• If [font color="red"]22...Nf5 23.Qc3+ f6 24.g4[/font] then:
• [font color="red"]24...Qe7 25.gxf5 Bxb3 26.Nxf6 Qxf6 27.axb3 Re5 28.fxg6[/font] leaves White with an extra pawn.
• [font color="burgundy"]24...Nh4?! 25.Nd6! Bxb3 26.Qxb3 Qc7 27.Kf1 h5 28.Re1[/font] gives White more freedom and space; Black's Knight at h4 cannot move.
• [font color="darkpink"]22...dxe4??[/font] drops the Queen to [font color="darkpink"]23.Qc3+!.[/font]
• If [font color="darkred"]20.Nxb5!?[/font] then:
• If [font color="darkred"]20...Nef5! 21.Rac1 Nxd4 22.N3xd4[/font] then:
• [font color="darkred"]22...a6 23.Nc3 Rc8 24.b4 b6 25.Nce2[/font] gives White a slight advantage in that he will be able to maintain the blockade after material is reduced.
• [font color="darkorange"]22...Ne6?! 23.Nxe6! fxe6 24.Qb4 a6 25.Nd6 a5 26.Qxb7[/font] gives White an extra pawn and more space.
• [font color="magenta"]20...Bxd4+ 21.N3xd4 Nef5 22.Rac1 Nxd4 23.Nxd4[/font] gives White a small advantage with the effective blockade on Black's passed but isolated d-pawn and more space.

19...Qxd7?!

• Black misses a chance to improve his fortunes. Most masters will prefer to impose a forcing move between a routine capture, and Black either missed one here or misjudged its strength.
• Better is [font color="red"]19...Bxc3! 20.Qxc3 Qxd7[/font] when:
• [font color="red"]21.Nd4 Rac8 22.Rd2 b6 23.b4 bxc5 24.bxc5[/font] gives White a small advantage in space.
• [font color="darkred"]21.Rd2 Ne6 22.Qf6 Rad8 23.Re1 Nc6 24.Red1[/font] gives White a small advantage in space.

20.Nxd5!

• After the exchanges on d5, White emerges with a fair advantage.
• If [font color="red"]20.Bd4?! Bxd4+ 21.Nxd4 Rad8[/font] then:
• If [font color="red"]22.Rac1[/font] then:
• [font color="red"]22...Nc6 23.Ndb5 d4 24.Ne4 Re6 25.Nbd6[/font] is equal.
• [font color="burgundy"]22...Ne6 23.Nxe6 Qxe6 24.Re1 Qf6 25.Qf2[/font] gives White only a small advantage in space; Black's d-pawn is mobile.
• If [font color="darkred"]22.Ndb5 Qc6 23.Qf2[/font] then:
• [font color="darkred"]23...Ne6 24.Nxa7 Qxc5 25.Qxc5 Nxc5 26.Nab5[/font] gives White a fair advantage in space.
• [font color="magenta"]23...b6?! 24.cxb6 axb6 25.Nd4 Qb7 26.Rd3[/font] gives White a fair advantage in space.

20...Nxd5 21.Qxd5 Qxd5 22.Rxd5

• White has the most active Rook on the board.

22...Bxb2 23.Rb1 Bf6 24.Nd2 Re7?!

• Black should be more concerned about the increasingly dangerous c-pawn.
• If [font color="red"]24...b6 25.Ne4 Be7[/font] then:
• [font color="red"]26.Rd2 Red8 27.Re2 f5 28.cxb6 axb6 29.Nc3[/font] gibves White the initiative.
• [font color="darkred"]26.c6!? Ne6 27.Rd7 Kf8 28.Rc1 Red8 29.Rb7[/font] gives White a small advantage with the advanced passer.

[center]BLACK: Andrey Vovk[/center]

[center][/center]

[center]WHITE: Wang Yue[/center][center]Position after 24...Re8e7[/center]

25.Ne4!

• White seizes the initiative and a substantial advantage in space.

25...Ne8 26.Rbd1

• [font color="red"]26.g4 h6 27.Nxf6+ Nxf6 28.Rd2 Kg7 29.Kg2[/font] cleartly gives White more freedom.

26...Kf8

• If [font color="red"]26...Rc8?! 27.g4![/font] then:
• [font color="red"]27...h6 28.Rd7 Rc7 29.Nxf6+ Nxf6 30.Rxe7 Rxe7 31.Rd8+[/font] leaves White with a Rook marauding Black's back rank.
• If [font color="darkred"]27...Be5?[/font] then:
• If [font color="darkred"]28.Rd8! Rxd8 29.Rxd8 h6 30.f4[/font] then:
• If [font color="darkred"]30...Bxf4 31.Nf6+ Kf8 32.c6!! bxc6 33.Nxe8[/font] then:
• [font color="darkred"]33...Re5 34.Nc7+ Ke7 35.Re8+ Kd6 36.Rxe5 Kxe5 37.Na6[/font] leaves White with a piece for two pawns.
• [font color="purple"]33...Rxe8[/font] loses to [font color="purple"]34.Bc5+!.[/font]
• [font color="darkorange"]30...Bc7 31.Nf6+ Kf8 32.Ra8 Re6 33.Nd5 Ba5 34.Rxa7[/font] gives White an extra pawn and soon wins a second.
• [font color="magenta"]28.Nd6?! Rb8! 29.Re1 f6 30.Nc4[/font] continues to give White a fair advantage in space, but nothing more.

27.Rd7 Rc8 28.g4 Be5?

• Black plays an inexplicable blunder. Almost anything is better.
• If [font color="red"]28...h5 29.gxh5 gxh5 30.R7d5 Be5 31.Nd6 Rcc7 32.Nc4[/font] wins the h-pawn, but Black's position is still defensable..

[center]BLACK: Andrey Vovk[/center]

[center][/center]

[center]WHITE: Wang Yue[/center][center]Position after 28...Bf6e5[/center]

29.c6!

• White wins the a-pawn.

29...b6

• If [font color="red"]29...Rxc6 30.Bc5! Rxc5[/font] then after [font color="red"]31.Nxc5 b6 32.Rxe7 Kxe7 33.Rd7+ Kf6 34.Ne4+[/font] the a-pawn falls.
• [font color="darkred"]30...Bd6 31.Bxd6 Rxd6 32.R1xd6 Nxd6 33.Rxd6[/font] gives White an extra piece.

If [font color="blue"]29...bxc6[/font] then the a-pawn falls after [font color="blue"]30.Bc5 Nd6 31.R1xd6 Rxd7 32.Rxd7+ Kg8 33.Re7.[/font]

30.Ng5 Rc7 31.Nxh7+ Kg7

• [font color="red"]31...Kg8[/font] (avoiding the variations in the note to Black's 33rd move) then:
• [font color="red"]32.Ng5! Nf6 33.Rxe7 Rxe7 34.Bd4 Bxd4+ 35.Rxd4[/font] gives White a powerful passer.
• [font color="darkred"]32.Rxe7? Rxe7 33.Ng5 Rc7 34.Rd7 Rxc6 35.Nxf7[/font] leaves White a pawn up, but Black has a fighting chance now.

32.Rxe7! Rxe7 33.Rd7 Bd6

• If [font color="red"]33...Re6 34.Ng5[/font] then:
• [font color="red"]34...Rf6[/font] then White wins easily after [font color="red"]35.Re7 Rxc6 36.Rxf7+ Kg8 37.Re7.[/font]
• If [font color="darkred"]34...Rxc6 35.Rxf7+[/font] then:
• [font color="darkred"]35...Kh8 36.Rf8+ Kg7 37.Rxe8 Bf6 38.Ne6+ Kf7 39.Nd8+[/font] leaves White with an extra piece and more pawns.
• If [font color="magenta"]35...Kg8[/font] then White wins after [font color="magenta"]36.Re7 Rc1+ 37.Kg2 Bf6 38.Rxe8+ Kg7 39.Ne4.[/font]

34.Ng5 Bb4

• [font color="red"]34...f6 35.Ne4 Ba3 36.Bg3 Kf7 37.c7 Nxc7 38.Rxc7[/font] leaves White a piece to the good.

35.Bd4+ f6 36.Ne6+ Kf7

• [font color="red"]36...Kg8 37.c7 Nxc7 38.Rxe7 Bxe7 39.Nxc7[/font] leaves White a piece to the good.

37.c7 Nxc7 38.Rxe7+ 1-0

• If [font color="red"]38...Bxe7[/font] then [font color="red"]39.Nxc7[/font] leaves White a piece to the good.
• Andrey Bogdanovich resigns.