As mentioned last week, former Russian national champion Alexander Grischuk handily won the Petrosian Memorial Tournament held earlier this month in Moscow. In the course of the event, Alexander Igorovich also passed the 2800 barrier.

[center]

Alexander Grischuk[/center]
[font size="1"]Photo by Stefan64 (http://commons.wikimedia.org/wiki/User:Stefan64) in Wikimedia Commons (http://commons.wikimedia.org/wiki/Category:Alexander_Grischuk)
(Creative Commons License, Attribution/Share Alike)
[/font]

Boris Gelfand - Alexander Grischuk
Petrosian Memorial, Round 2
Moscow, 5 November 2014

West India Game: Grünfeld Defense (London Attack)

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4

[center]BLACK[/center]
[center][/center]
[center]WHITE[/center]
[center]West India Game: Grünfeld Defense (London Attack)[/center]
[center]Position after 4.Bc1f4[/center]

• This is the Brinckmann Attack or London Attack.


• More common are 4.cxd5 Nxd5 5.e4 Nxc3 6.Bxc3 (the Exchange Variation) and 4.Qb3 dxc4 5.Qxc4 (the Russian Attack).

• 4...c6, the Slav-Grünfeld Defense, is also playable.

[center]BLACK[/center]

[center][/center]

[center]WHITE[/center]
[center]West India Game: Grünfeld Defense (London Attack)[/center]
[center]Position after 6.Ra1c1[/center]

• If [font color="red"]6.Nf3[/font]

[center]BLACK[/center]
[center][/center]
[center]WHITE[/center]
[center]West India Game: Grünfeld Defense (London Attack)[/center]
[center]Position after 6.Ng1f3[/center]

• [font color="red"6...c5 7.dxc5[/font] then:
• If [font color="red"]7...Qa5 8.Rc1[/font] then:
• If [font color="red"]8...dxc4 9.Bxc4[/font] then:
• If [font color="red"]9...Qxc5 10.Bb3 Nc6 11.0-0 Qa5 12.h3 Bf5[/font] then:
• If [font color="red"]13.Qe2 Ne4[/font] then:
• If [font color="red"]14.Nd5 e5 15.Bh2[/font] then:
• If [font color="red"]15...Be6 16.Rfd1[/font] then:
• If [font color="red"]16...Rfd8 17.Qc4 Nf6 18.e4 Rac8[/font] then:
• If [font color="red"]19.Ng5 Nd4 20.Ne7+ Kf8 21.Nxe6+ Kxe7 22.Nxd8 Rxc4 23.Bxc4[/font] then:
• If [font color="red"]23...Nxe4 24.Nxf7[/font] then:
• [font color="red"]24...Qb6 25.Nxe5 Bxe5 26.Bxe5 Nf3+ 27.gxf3 Qxf2+ 28.Kh1 Qxf3+ 29.Kh2 Qf2+ 30.Kh1 Qf3+ etc.[/font] draws by repetition (Timman-Ivanchuk, Match, Hilversum, 1991).
• [font color="burgundy"]24...Qc5 25.Rf1 Nd2 26.Bxe5 Bxe5 27.Nxe5 Nxf1 28.Kxf1[/font] is equal.
• If [font color="darkred"]23...Ne8!?[/font] then:
• [font color="darkred"]24.Nxf7! b5 25.Bd5 Ne2+ 26.Kh1 Nxc1 27.Rxc1[/font]gives White a small advantage with a potential attack on the enemy King (Kramnik-Kamsky, Tal Mem, Moscow, 2008).
• If [font color="magenta"]24.Nxb7!? Qb6[/font] then:
• [font color="magenta"]25.Kh1 Qxb7 26.f3 Qb4 27.Bd5 Qb5 28.b3 Qe2[/font] gives Black a material advantage equivalent to an exchange.
• [font color="darkorange"]25.Bd5 Ne2+ 26.Kh1 Nxc1 27.Rxc1 Qxb2[/font] gives Black a material advantage and an active Queen.
• [font color="burgundy"]19.Qc5 Qxc5 20.Rxc5 Nxe4 21.Rxc6 Rxc6 22.Ne7+ Kf8 23.Nxc6 Rxd1+ 24.Bxd1 bxc6[/font] is equal (Volzhin-Oral, Op, Koszalin, Poland, 1999).
• If [font color="darkred"]16...Rad8 17.Qc4 Nf6 18.e4 Nd7[/font] then:
• If [font color="darkred"]19.Qe2 Ndb8 20.Bg3 Kh8 21.Bc4[/font] then:
• [font color="darkred"]21...Nd7?! 22.Bh4! Rc8 23.b4 Nxb4 24.Be7 Nc6 25.Bxf8 Rxf8 26.Ne3[/font] gives White the exchange for a pawn (Farago-W Schmidt, IT, Helsinki, 1981, ½-½/34 moves).
• [font color="burgundy"]21...a6 22.Bh4 f6 23.a3 Bxd5 24.exd5[/font] gives White the Bishop pair and the initiative; Black's e-pawn is vulnerable because of the pin at f6.
• If [font color="magenta"]19.Qa4!? Qxa4 20.Bxa4[/font] (White has pressure on c6; White's plan is to advance the b-pawn to b5, but Black has time to deal with that evenuality) [font color="magenta"]20...Ndb8[/font] then:
• [font color="magenta"]21.b4 a6 22.Bb3 Kh8 23.a4 f5 24.b5[/font] is equal; White's plan comes to fuition and Black has dealt with it (Danielian-Cmilyte, Euro Club Cup W, Plovdiv, 2010).
• [font color="darkorange"]21.a3 f6 22.b4 a6 23.b5[/font] draw (P Lukacs-W Schmidt, Makarczyk Mem, Lodz, 1980).
• If [font color="darkred"]15...Nc5 16.Bc4 e4[/font] then:
• If [font color="darkred"]17.Ng5 Nd3[/font] then:
• [font color="darkred"]18.Bc7!? Nxc1! 19.Rxc1 Qc5 20.Qd2 Rad8 21.Bb3[/font] gives White the initiative; both sides have active pieces (Belous-Mazharov, Moscow Ch, 2010).
• [font color="burgundy"]18.Rc2 Qd8 19.Nxf7 Rxf7 20.Nc7 Rc8 21.Bxf7+ Kxf7[/font] is equal; White has a Rook and a pawn for two minor pieces.
• If [font color="magenta"]17.Nd4 Nxd4 18.exd4 Nd3[/font] then:
• [font color="magenta"]19.Rcd1!? Kh8! 20.Ne3 Rad8 21.Nxf5 Qxf5 22.Bxd3 exd3 23.Rxd3 Rxd4[/font] draw (Röder-Nedev, Euro Club Cup, Rethymnon, 2003).
• [font color="darkorange"]19.Rc2 Qd8 20.g4 Be6 21.Qxe4 Rc8 22.Nc7[/font] leaves White standing better.
• If [font color="darkred"]14.Nxe4 Bxe4 15.Rfd1 Qh5[/font] then:
• If [font color="darkred"]16.Bc2 Bxc2 17.Qxc2 Qb5[/font] then:
• [font color="darkred"]18.a4 Qb4 19.Ne1 e5 20.Bg3 Rfd8 21.Nd3[/font] is equal (Svidler-Aronian, Tal Mem, Moscow, 2011).
• [font color="burgundy"]18.Rd2 Rad8 19.b3 Rxd2 20.Nxd2 Nb4 21.Qe4 Nxa2[/font] is equal (Nakhbeyeva-Ponizil, Op, Pardubice, 2012).
• [font color="#ECA11A"]16.Rd7 e6 17.Bc2 Bxf3 18.Qxf3 Qxf3 19.gxf3[/font] remains equal (Khenkin-Roiz, Ol, Dresden, 2008).
• If [font color="magenta"]15...Rad8[/font] then:
• If [font color="magenta"]16.Rxd8 Rxd8 17.Bxf7+ Kxf7 18.Ng5+[/font] then:
• If [font color="magenta"]18...Kg8 19.Nxe4 Qxa2 20.Kh2[/font] then:
• [font color="magenta"]20...Qd5 21.Nc5 b6 22.Na6 Ne5 23.Rc7 Rd7 24.b4[/font] is equal; exchanges on c7 and c4 will leave the game quite drawish (Praskash-Sasikiran, Indian Ch, Mumbai, 2003).
• [font color="#C58917"]20...a5?! 21.Qb5! Qd5 22.Qxb7 Qxe4 23.Rxc6 Bf6 24.f3[/font] gives White an extra pawn, more activity, the initiative and a safer King; Black also enjoys activity (Drozdovskij-Grandelius, OP, Copenhagen, 2009).
• [font color="purple"]18...Ke8!? 19.Nxe4 Qxa2 20.Nc5 Qxb2 21.Qc4 Rd2 22.Qg8+[/font] gives White a stroner initiative.
• [font color="darkorange"]16.Ng5 Bd5 17.Bc7 Qxc7 18.Rxd5 Rxd5 19.Bxd5 Qa5[/font] is equal; 20.Bxf7+ nets White a Rook and a pawn for two minor pieces (L B Hansen-Shirov, Euro ChT, Novi Sad, 2009).
• If [font color="darkred"]13.Ng5 e5 14.Bh2 Rad8[/font] then:
• [font color="darkred"]15.Qf3!? h6 16.Nge4 Nxe4 17.Nxe4 Qb4 18.Rc4 Qe7[/font] is equal (P Littlewood-Conquest, British Ch, Torquay, 2009).
• [font color="magenta"]15.Bxf7+ Rxf7 16.Qb3 Qc7 17.Rfd1 Rxd1+ 18.Rxd1 Qe7[/font] gives White a small advantage; he can initiate exchanges on f7 at will.
• [font color="burgundy"]9...Nc6 10.0-0 Qxc5 11.Bb3 Qa5 12.h3 Bf5 13.Ng5[/font] transposes into [font color="darkred"]P Littlewood-Conquest,[/font] below.
• If [font color="darkred"]8...Rd8 9.Qa4 Qxc5 10.b4 Qc6[/font] then:
• If [font color="darkred"]11.Qb3 Ne4[/font] then:
• [font color="darkred"]12.Ne5 Bxe5 13.Bxe5 Nd2 14.Qd1 Nxf1 15.Nxd5 Kf8 16.Qd4[/font] gives White the advantage in the center; the Black Knight on f1 is deadwood (Karsa-Adorjan, Hungarian Ch, Budapest, 1976).
• If [font color="magenta"]12.Be5 Bxe5[/font] then:
• [font color="magenta"]13.Nxe5 Qd6 14.Nxf7 Kxf7 15.Nxe4 dxe4 16.c5+ Be6 17.cxd6 Bxb3 18.dxe7 Kxe7 19.axb3[/font] gives White an extra pawn (Urday Caceres-Yermelinsky, Ol, Moscow, 1994).
• If [font color="darkorange"]13.Nxe4? dxe4! 14.Nxe5[/font] then:
• [font color="darkorange"]14...Qd6 15.Qc3 f6 16.Nxg6 hxg6 17.c5 Qc7[/font] leaves Black with an extra piece.
• [font color="purple"]14...Qe6 15.f4 f6 16.Nxg6 hxg6[/font] leaves Black with an extra piece.
• If [font color="magenta"]11.b5!? Qc5 12.Qb3[/font] then:
• If [font color="magenta"]12...Bg4 13.Na4 Qc8[/font] then:
• If [font color="magenta"]14.Be2 Ne4[/font] then:
• If [font color="magenta"]15.Rc2 Nd7 16.cxd5 Ndc5 17.Nxc5 Nxc5[/font] then:
• [font color="magenta"]18.Qb4?! b6! 19.0-0 Qf5 20.Rc4 Qxd5 21.h3 Bf5[/font] is equal (Farago-Gulko, Rubinstein Mem, Polanica Zdroj, 1977).
• [font color="burgundy"]18.Qa3 Rxd5 19.e4 Rh5 20.h3 b6 21.0-0[/font] gives White a more active game; Black will have a hard time extricating his Rook from its awkward post at h5.
• If [font color="darkorange"]15.Qb1 Nd7 16.cxd5 Ndc5 /i][/font] then:
• [font color="darkorange"]17.0-0 Rxd5 18.h3 Nd2 19.Nxd2 Bxe2 20.e4[/font] gives White the initiative.
• [font color="purple"]17.Nxc5!? Nc3! 18.Qb3 Qxc5 19.e4 Rac8 20.Bd2 e6[/font] gives Black activity in compensation for the pawn.
• If [font color="darkorange"]14.Qa3 Bxf3 /i][/font] then:
• If [font color="darkorange"]15.Nb6? axb6! 16.Qxa8 Bg4 17.Qa3 dxc4 18.f3 /i][/font] then:
• [font color="darkorange"]18...Be6 19.e4 Nh5 20.Be3 Qc7 21.g3 Nd7 22.Be2 Nc5 23.Kf2 Be5[/font] White resigns (Carrasco Martínez-Khamrakulov, Op, Lorca, Spain, 2001).
• Black probably wins quicker after [font color="#C58917"]18...Qd7 19.Be2 Qd2+ 20.Kf1 Bf5 21.Rxc4 Nd5.[/font]
• [font color="purple"]15.gxf3 Bf8 16.cxd5 Qf5 17.Qd3 Qxd5 18.Qxd5 Nxd5[/font] is equal.
• [font color="#9C6A17"]12...Be6!? 13.Nd4! Qc8 14.Nxe6 Qxe6 15.cxd5 Qf5 16.Bc4[/font] gives White an extra pawn and better development; Black has a safer King (Furtado-Hema, World Jr ChG, Chennai, 2011).
• If [font color="darkred"]7...Ne4[/font] then:
• If [font color="darkred"]8.Rc1 Nxc3 9.bxc3[/font] then:
• If [font color="darkred"]9...dxc4 10.Qxd8 Rxd8 11.Bxc4[/font] then:
• If [font color="darkred"]11...Nd7[/font] then:
• If [font color="darkred"]12.Rd1 Rf8 13.Bg5 Bxc3+ 14.Ke2 Bf6 15.Bxf6[/font] then:
• If [font color="darkred"]15...Nxf6[/font] then:
• [font color="darkred"]16.Ne5 Bf5 17.f3 Rac8 18.Rc1 Kg7 19.e4 Bd7[/font] is equal (Sanikidze-Nedilko, Euro Ch, Rijeka, 2010).
• [font color="burgundy"]16.Rd4 Bg4 17.Rb1 Rab8 18.h3 Bxf3+ 19.Kxf3 Rfc8[/font] is equal (Harika-Delchev, Op, Cappelle-la-Grande, 2011).
• If [font color="magenta"]15...exf6 16.Rd5 Re8[/font] then:
• [font color="magenta"]17.Rc1 Kg7 18.Nd4 Nf8 19.Nb5 Re7 20.Nd6[/font] gives White a slight advantage with a better center (Moiseenko-Howell, Euro ChT, Warsaw, 2013).
• If [font color="darkorange"]17.Rb1 Re7 18.Nd4[/font] then:
• [font color="darkorange"]18...Ne5 19.Bb5 Bg4+ 20.f3 Be6 21.Nxe6 fxe6 22.Rd6[/font] draw (Drozdovskij-Howell, Op 0910, Hastings, 2010).
• [font color="purple"]18...Kg7 19.Bb5 Nf8 20.a3 Ne6 21.Kf1 f5 22.g3[/font] is equal.
• If [font color="magenta"]12.Bc7 Rf8 13.c6 bxc6 14.Nd4[/font] then:
• [font color="magenta"]14...Re8 15.0-0 Nb6 16.Bxb6 axb6 17.Nxc6[/font] draw (P Lukacs-Adorjan, Hungarian Ch, Budapest, 1981).
• [font color="darkorange"]14...Be5 15.Ba5 Bb7 16.Ne6 Rfc8 17.Rb1 Rab8 18.0-0[/font] gives White an active Bishop pair; if 18...fxe6?! then White gets the piece right back with 19.Bxe6+ (Salov-Peelen, Euro Jr Ch, Gronigen, 1983).
• If [font color="magenta"]11...Nc6[/font] then:
• [font color="magenta"]12.Ng5 Rf8 13.0-0 h6 14.Nf3 Bg4 15.Rb1 Rac8[/font] is equal (Lerner-Stohl, Kotov Mem, Tallinn, 1986).
• [font color="darkorange"]12.0-0 Bd7 13.e4 Rac8 14.Rfd1 Be8 15.Rxd8 Nxd8 16.Be3[/font] gives White an extra pawn, but he should make plans to return it (Pinter-Illescas Córdoba, IT, León, 1989).
• If [font color="magenta"]9...Qa5[/font] then:
• If [font color="magenta"]10.cxd5[/font] then:
• If [font color="magenta"]10...Nd7 11.Qb3 Nxc5 12.Qb4 Qb6[/font] then:
• [font color="magenta"]13.Be5 Bf5 14.Bxg7 Kxg7 15.Be2 Rfd8 16.Qd4+ f6 17.c4[/font] gives White a better center; Black had to weaken her kingside pawns (Batchimeg-Cmilyte, GPW, Diljian, 2013, 1-0/45 moves).
• If [font color="darkorange"]13.Be2 Rd8 14.Qxb6 axb6[/font] then:
• [font color="darkorange"]15.c4!? Rxa2! 16.Bc7 Nb3 17.Rd1 Rf8 18.Bxb6 Bf5[/font] gives Black more activity for his Bishops in compensation for a pawn (Tovmasian-Yu Vovk, Vasylyshyn Mem, Lviv, 2012).
• [font color="purple"]15.0-0 Rxd5 16.c4 Rd7 17.Rc2 Nd3 18.Bxd3 Rxd3[/font] gives Black the Bishop pair and an annoying Rook at d3.
• If [font color="darkorange"]10...Bxc3+ 11.Nd2 Nd7 12.Qc2 Bb4[/font] then:
• [font color="darkorange"]13.Be2 Qxc5 14.e4 Qxc2 15.Rxc2 Nc5 16.0-0 Bxd2[/font] is equal (A Smirnov-Smetenov, Polugaevsky Mem, Samara, 2012).
• [font color="purple"]13.e4 Nxc5 14.Be2 b6 15.0-0[/font] draw (Inkiov-Tseshkovsky, Op. Calcutta, 1986).
• If [font color="darkorange"]10.Qb3 dxc4 11.Bxc4 Qxc5[/font] then:
• If [font color="darkorange"]12.0-0 Nc6[/font] then:
• [font color="darkorange"]13.Be2 e5 14.Bg3 a6 15.Rfd1 b5 16.a4 Be6[/font] remains equal (Escudeiro Viana-Dimitrijevic, Op, Gibraltar, 2013).
• [font color="#C58917"]13.Qb5 Qxb5 14.Bxb5 Na5 15.c4 a6 16.Ba4 Be6[/font] gives Black the initiative against White's weakling at c4 (Cusi-Shamkovich, Op, Chicago, 1988).
• [font color="purple"]12.Qb4 Nd7 13.0-0 a5 14.Qxc5 Nxc5 15.Rfd1 Bg4[/font] gives Black stronger pawns and an opportunity to deal more structural damage to White with 16...Bxf3 [i.(Leepin-Rabar, TM, Ljubljana, 1949).
• If [font color="magenta"]8.Be5 Bxe5 9.Nxe5 Nxc3 10.bxc3[/font] then:
• If [font color="magenta"]10...Qa5 11.Rc1[/font] then:
• If [font color="magenta"]11...Nc6 12.Nxc6 bxc6 13.cxd5 cxd5[/font] then:
• [font color="magenta"]14.Be2 Be6 15.0-0 Rac8 16.Bg4 Bxg4 17.Qxg4 Rxc5[/font] gives Black more activity and pressure on White's weak queenside pawns (Zhe Quan-Kudrin, Op, Brantford, Ontario, 2004).
• [font color="burgundy"]14.Qd2!? Be6 15.Be2 Rac8 16.0-0 Rxc5 17.Rc2 Rfc8[/font] gives Black pressure on White's weak queenside pawns (Clemens-Firat, Op, Groningen, 2011).
• [font color="#ECA11A"]11...dxc4 12.Bxc4 Qxc5 13.Qd4 Nd7 14.Nxd7 Qxd4 15.cxd4 Bxd7[/font] is equal (Efimov-Citak, Euro Club Cup, Antalya, Turkey, 2007).
• If [font color="darkorange"]10...Qc7 11.Qd4 f6 12.Nf3[/font] then:
• If [font color="darkorange"]12...dxc4 13.Qxc4+ Kg7 14.Be2 Nd7 15.Nd4 Nxc5 16.Nb3[/font] is equal (Raptis-Bykhovsky, Op, Las Vegas, 2012).
• [font color="purple"]12...Nc6 13.Qxd5+ Kg7 14.Qd2 e5 15.Be2 Na5 16.0-0[/font] gives White two useless extra pawns that make up two-thirds of a triplet (Alburt-Tukmakov, ZT, Vilnius, 1975).

• If [font color="red"]6...c5 7.dxc5 Be6 8.Nf3[/font] then:
• If [font color="red"]8...Nc6 9.Be2 Ne4 10.0-0[/font] then:
• If [font color="red"]10...Nxc3 11.bxc3 dxc4 12.Ng5 Bd7 13.Bxc4 Na5 [/font] then:
• If [font color="red"] 14.Bd5 Rc8 15.Qd3[/font] then:
• If [font color="red"]15...e6 16.Bf3 e5 17.Bg3[/font] then:
• If [font color="red"]17...Ba4 18.Qxd8 Rfxd8[/font] then:
• [font color="red"]19.c4 Bc6 20.Rfd1 Rxd1+ 21.Rxd1 h6 22.Bxc6 hxg5 23.Bd5[/font] gives White and extra pawn and the Bishop pair; Black will have a difficult time dislodging the Bishop at d5. (Lechtynsky-Jansa, Czechoslovakian Ch, Prague, 1986).
• [font color="burgundy"]19.Ne4 f5 20.Ng5 Bf6 21.h4 Rd2 22.c4 e4 23.Bxe4[/font] leaves White up by two pawns, but only temporaily (Pinter-Sion Castro, IT, León, 2089).
• [font color="#ECA11A"]17...Rxc5 18.Rfd1 Rc7 19.Bg4 Qxg5 20.Bxd7 Rd8[/font] gives Black a bit more activity (Farago-W Schmidt, Rubinstein Mem, Polanica Zdroj, 1981).
• If [font color="darkred"]15...e5[/font] then:
• If [font color="darkred"]16.Nxf7 Rxf7 17.Bxf7+ Kxf7 18.Rfd1 exf4[/font] then:
• If [font color="darkred"]19.Qxd7+ Qxd7 20.Rxd7+ Kg8 21.exf4 Rxc5[/font] then:
• If [font color="darkred"]22.h4[/font] then:
• If [font color="darkred"]22...Rf5 23.g3 Rf7[/font] then:
• [font color="darkred"]24.Rcd1!? Bxc3 25.Rxf7 Kxf7 26.Rd7+ Kg8 27.Kg2[/font] gives White the Rook on the seventh rank (Farago-Jansa, IT, Sochi, 1980).
• If [font color="magenta"]24.Rd8+[/font] then:
• [font color="magenta"]24...Bf8 25.Rcd1 Nc4 26.R1d7 Rxd7 27.Rxd7 Nd6 28.c4[/font] gives White a material advantage and a Rook on the seventh rank.
• [font color="darkorange"]24...Rf8 25.Rd5 Nc4 26.Rb1 Rf7 27.Rc5 Nb6 28.Ra5[/font] gives White a material adavatage and active Rooks; Black has an active Bishop threatening White's c-pawn.
• [font color="burgundy"]22...Bxc3 23.Rd8+ Kg7 24.Rd7+ Kg8 25.g4 Bb4 26.Rxc5 Bxc5[/font] is equal (Pinter-Jansa, IT, Bajmok, 1980).
• [font color="#ECA11A"]22.Re1 Rxc3 23.Re8+ Bf8 24.g3 Rc1+ 25.Kg2 Rc6 26.Ra8[/font] gives White a small advantage for his Rook activity.
• [font color="#F64A8A"]19.c6 Nxc6 20.Qxd7+ Qxd7 21.Rxd7+ Kg8 22.exf4[/font] gives White a slight material edge.
• If [font color="magenta"]16.Rcd1!? Be8![/font] then:
• [font color="magenta"]17.Qe4 Qf6 18.Bg3 Qxg5 19.Qb4 b6 20.cxb6 axb6[/font] is equal; Black's Knight at a5 is deadwood.
• [font color="darkorange"]17.Qb1 Qe7 18.Bg3 Qxg5 19.Qb4[/font] trasposes into [font color="magenta"]this.[/font]
• [font color="burgundy"]14.Bb3 Rc8 15.Qd5 e6 16.Qd6 Rc6 17.Qd3 Nxb3 18.axb3[/font] is equal (Platchetka-Ghinda, IT, Rimavska Sobota, 1975).
• If [font color="darkred"]10...Bxc3 11.bxc3 dxc4 12.Nd4[/font] then:
• If [font color="darkred"]12...Nxc5 13.Bh6 Re8 14.Nxe6 Nxe6 15.Bxc4[/font] then:
• [font color="darkred"]15...Qxd1 16.Rfxd1 Red8 17.Kf1 Ne5 18.Be2 Rac8 19.f4[/font] (Keres-Kavalek, IT, Marianske Lazne, 1965).
• If [font color="magenta"]15...Nc5 16.Qe2 Qa5 17.f4[/font] then:
• If [font color="magenta"]17...Ne4?! 18.Bxf7+! Kxf7 19.Qc4+ e6 20.Qxe4 Qxa2[/font] then:
• If [font color="magenta"]21.Rcd1 Rad8 22.Bg5!?[/font] then:
• [font color="magenta"]22...Rd2! 23.c4 Qa5 24.Qb1 Rxd1 25.Rxd1[/font] attacks the b7 pawn, forcing Black to deactivar his Queen to defend it (Portisch-W Schmidt, Ol, Skopje, 1972).
• [font color="burgundy"]22...Rxd1! 23.Rxd1 Qe2 24.Rb1 Rb8 25.Kh1[/font] gives White a small advantage with the better Rook.
• [font color="#ECA11A"]21.f5 exf5 22.Rxf5+ Kg8 23.Qf4 Ne7 24.Rb5[/font] gives White more activity for his Rook than Black has for either of his.
• If [font color="darkorange"]17...e6 18.Bb5 Rad8[/font] then:
• [font color="darkorange"]19.Bg5!? Rd7! 20.Qc4 Rc8 21.Qxc5 Rd5 22.Qc4 Rxb5[/font] gives Black the advantage; the threat of 23...Rc5 forces the White Queen to retreat.
• If [font color="purple"]19.Qb2 Qb6 20.c4 e5[/font] then:
• [font color="purple"]21.Rb1 Re6 22.Bxc6 Qxb2 23.Rxb2 Rxc6 24.fxe5 Rd7[/font] remains equal.
• If [font color="#C58917"]21.Bg5 Rd7 22.Rc2 a6 23.Bxc6 Qxc6 24.Bh6 Nd3[/font] gives White the initiative.
• [font color="#9C6A3D"]12...Qd7 13.Nxe6 Qxe6 14.Qa4 Ne5 15.Qb5 Nd3 16.Bxd3 cxd3[/font] is equal (Miralles-Domínguez Pérez, Euro Club Cup. Rhodes, 2013).
• If [font color="darkred"]8...Qa5 9.Nd4 Nc6[/font] then:
• If [font color="darkred"]10.Nxe6 fxe6 11.Be2[/font] then:
• If [font color="darkred"]11...Ne4 12.0-0 Nxc3 13.bxc3 Qxc5[/font] then:
• If [font color="darkred"]14.cxd5 exd5 15.Rb1[/font] then:
• [font color="darkred"]15...e6 16.Rxb7 Qxc3 17.Bg4 Rae8 18.Qc1 h5 19.Bh3[/font] gives White a Rook on the seventh rank and the Bishop pair; Black defense is spirited (Scholz-Leko, Op, Dortmund, 1992,).
• [font color="burgundy"]15...Rad8? 16.Rxb7! Bxc3 17.Rb5 Qa3 18.Rxd5 Qxa2 19.Bf3[/font] gives White a tremendous position from which he should win (García Gonzales-Milos, Capablanca Mem, Havana, 1986).
• [font color="#ECA11A"]14.Rb1 Nd8 15.cxd5 exd5 16.Rb5 Qxc3 17.Qxd5+[/font] (Kluger-Ginsberger, Asztalos Mem, Gyula, 1965).
• If [font color="magenta"]11...Rad8 12.Qa4 Qxc5 13.0-0 d4 14.exd4 Nxd4 15.Be3[/font] then:
• [font color="magenta"]15...Qe5 16.Bxd4 Rxd4 17.Rce1 Rd2 18.Bf3 Qd4 19.Rd1!?[/font] gives White the advantage; Black's queenside pawns are undefended (Van Wely-Shirov, IT A, Wijk aan Zee, 1996).
• [font color="darkorange"]15...a6 16.Rfd1 Nh5 17.g3 Kh8 18.Rd2 Qf5 19.Qd1[/font] is approximately equal (Brink Claussen-Xu Jun, Ol, Thessaloniki, 1984).
• If [font color="magenta"]10.Nb3 Qd8 11.Nd4[/font] then:
• If [font color="magenta"]11...Nxd4 12.exd4 dxc4[/font] then:
• [font color="magenta"]13.Be5 b6 14.Nb5 Ne8 15.Bxg7 Kxg7 16.Bxc4 Bxc4[/font] is equal (Panno-Benko, IT, Los Angeles, 1963).
• [font color="purple"]13.Be2 Rc8 14.0-0 b6 15.Be3 bxc5 16.dxc5 Nd7[/font] is equal (D Gurevich-Henley, IT 8283, Hastings, 1982).
• [font color="darkorange"]11...Qa5 12.Nxe6 fxe6[/font] transposes into [font color="darkred"]this at Blacl's tenth move.[/font]

• This is not the most frequently played line, but it works better than the analogus line in the Orthodox Queen's Gambit.
• If [font color="red"]7.Qb3[/font] then:
• If [font color="red"]7...c5?! 8.Qxb7![/font] then:
• If [font color="red"]8...Qb6 9.Qxb6 axb6 10.Nf3[/font] then:
• If [font color="red"]10...dxc4 11.dxc5[/font] then:
• If [font color="red"]11...bxc5 12.Nd2 Nd5[/font] then:
• If [font color="red"]13.Bxc4 Bxc3 14.bxc3 Nxf4 15.exf4 Bxc4 16.Nxc4 Rxa2 17.g3[/font] then:
• [font color="red"]17...Nd7 18.0-0 Nf6 19.Ra1 Rfa8 20.Rxa2 Rxa2[/font] is equal (Tsegmed-Rodshtein, Ol, Tromsø, 2014).
• [font color="burgundy"]17...Nc6 18.0-0 Rd8 19.Rfd1[/font] draw (Gundavaa-Safarli, World Ch Rpd, Khanty-Mansiysk, 2013).
• If [font color="darkred"]13.Nxd5!? Bxd5![/font] then:
• If [font color="darkred"]14.Bxc4 Bxg2 15.Rg1 Bc6[/font] then:
• If [font color="darkred"]16.Bb3?![/font] then:
• If [font color="darkred"]16...Na6?![/font] then:
• [font color="darkred"]17.Nc4?! Nb4! 18.Ke2 Nxa2 19.Ra1 Nb4 20.Be5 Bb5[/font] leaves Black with an extra pawn (Brown-Kudrin, Op, Las Vegas, 2012).
• [font color="#C58917"]17.Rb1 Nb4 18.Bc4 Nd5 19.Bxd5 Bxd5 20.a3 Ba2[/font] gives Black better minor pieces and an active Rook; White has a passed a-pawn.
• [font color="purple"]16...Nd7! 17.Nc4 Bd5 18.Ke2 Bxc4+ 19.Rxc4 Bxb2[/font] gives Black an extra pawn.
• [font color="darkorange"]16.Rb1 Nd7 17.a3 Ra7 18.h4 Rfa8 19.h5 Kf8[/font] gives Black stronger pawns apart from White connected passers on the kingside.
• [font color="magenta"]14.e4 Be6 15.Bxc4 Bxb2 16.Rc2 Bd4 17.0-0 Nc6[/font] gives Black a small advantage with a better center; both sides have a passed pawn of which Black's is blockaed but more advanced.
• If [font color="darkred"]11...Nd5[/font] then:
• [font color="darkred"]12.Nxd5 Bxd5 13.Bxc4 Bxc4 14.Rxc4 Rxa2 15.0-0 bxc5 16.Rxc5[/font] is equal (K Georgiev-LeRoux, Euro Ch, Aix-les-Bains, 2011).
• [font color="magenta"]12.cxb6 Nxf4 13.exf4 Ra6 14.Nd1 Rxa2 15.Bxc4 Bxc4 16.Rxc4[/font] gives White two extra pawns, but he must return one (Wang Yue-Khmelniker, World Ch Student, Zürich, 2010).
• If [font color="darkred"]10...Nc6[/font] then:
• If [font color="darkred"]11.dxc5 bxc5 12.cxd5 Nxd5 13.Nxd5 Bxd5 14.Rxc5[/font] then:
• [font color="darkred"]14...e6 15.Bc4 Bxc4 16.Rxc4 Rxa2 17.0-0 Na5 18.Rc5[/font] is equal (Malakhov-Svidler, Russian ChT, Olginka, 2011).
• If [font color="magenta"]14...Rfd8 15.Bc4 Nb4 16.0-0 Bxb2[/font] then:
• [font color="magenta"]17.Bc7!? Rdc8! 18.Bxd5 Nxd5 19.Rxd5 Rxc7 20.Rd2 Rxa2[/font] is equal (Yudkevich-P Papp, Chigorin Mem Op, St Petersburg, 2012).
• [font color="darkorange"]17.Rb1 Bxc4 18.Rxc4 Nxa2 19.g4 Ba3 20.Kg2 Rdc8[/font] remains equal.
• If [font color="magenta"]11.Ne5 cxd4 12.cxd5[/font] then:
• [font color="magenta"]12...Nxe5 13.dxe6 dxc3 14.Bxe5 Ne4 15.Bxc3 Bxc3+ 16.bxc3 Rxa2[/font] remains equal.
• [font color="darkorange"]12...dxc3 13.dxe6 cxb2 14.exf7+ Rxf7 15.Rb1 Nxe5 16.Bxe5[/font] remains equal.
• a) If [font color="darkred"]8...cxd4 9.exd4[/font] then:
• [font color="darkred"]9...Qb6? 10.Qxa8! Nh5 11.c5 Qxb2 12.Bd2 Bxd4 13.Nf3[/font] White goes on to win (Aronian-Nepomniachtchi, IT A, Wijk aan Zee, 2011).
• [font color="magenta"]9...Qd7 10.Qxd7 Nbxd7 11.b3 Nh5 12.Be3 dxc4 13.bxc4[/font] still gives White an extra pawn and excellent winning chances.
• b) [font color="burgundy"]8...Nbd7? 9.cxd5 cxd4 10.exd4 Bf5 11.Bb5 Nb6 12.Bc7[/font] leaves White with two extra pawns and more activity.
• If [font color="darkred"]7...b6 8.Nf3[/font] then:
• [font color="darkred"]8...c6 9.Be2 Nbd7 10.h3 dxc4 11.Bxc4 Bxc4 12.Qxc4[/font] gives White the advantage in space; Black has a safer King (Jakubowski-Kanarek, Polish Ch, Warsaw, 2009).
• If [font color="magenta"]8...c5!? 9.dxc5! Na6?![/font] then:
• If [font color="magenta"]10.c6! Nc5 11.Qd1 dxc4 12.Qxd8 Rfxd8 13.Nd4 Nd5[/font] is equal (E L'Ami-Sasikiran, World Cup, Khanty-Mansiysk, 2009).
• If [font color="darkorange"]10.Qa3 Nxc5 11.Rd1 a5[/font] then:
• [font color="darkorange"]12.Be2 Nce4! 13.Nxe4 Nxe4 14.0-0 Qd7 15.Ng5 Nxg5 16.Bxg5[/font] gives White a small adavantage; Black must weaken his kingside to save the f-pawn (Razik-Safarli, World ChT, Antalya, 2013).
• [font color="purple"]12.Be5 Bg4 13.Be2 e6 14.h3 Bxf3 15.Bxf3[/font] gives White a small advantage in space.

[center]BLACK[/center]
[center][/center]
[center]WHITE[/center]
[center]West India Game: Grünfeld Defense (London Attack)[/center]
[center]Position after 8.Bf1d3[/center]

• White may also continue with 8.Nf3.
• If [font color="red"]8.Nf3[/font]

[center]BLACK[/center]
[center][/center]
[center]WHITE[/center]
[center]West India Game: Grünfeld Defense (London Attack)London Order[/center]
[center]Position after 8.Ng1f3[/center]

• [font color="red"8...Bg4 9.Be2 Nbd7[/font] then:
• If [font color="red"]10.Qb3 Qc8 11.Ne5 Bxe2[/font] then:
• [font color="red"]12.Nxe2 Re8 13.0-0 Nh5 14.Nxd7 Nxf4 15.Nxf4 Qxd7[/font] remains equal (Batchimeg-Ushenina, GPW, Geneva, 2013).
• [font color="burgundy"]12.Nxd7 Bc4 13.Nxf6+ Bxf6 14.Qd1 Re8 15.Ne4 Ba6[/font] gives Black an active Bishop pair; White's King is caught in the center, but 16.Nxf6+ spoils Black's pawn structure.
• If [font color="darkred"]10.h3 Bxf3 11.Bxf3[/font] then:
• If [font color="darkred"]11...Re8 12.0-0 e5 13.Bh2 exd4 14.exd4[/font] then:
• [font color="darkred"]14...Ne4 15.Bxe4 dxe4 16.Re1 f5 17.Qb3+ Kh8 18.Qxb7 Bxd4[/font] remaisn equal (Ghaem Maghami-Volokitin, World Ch Blitz, Dubai, 2014).
• [font color="darkorange"]14...Nf8 15.Qb3 b6 16.cxb6 Qxb6 17.Qxb6 axb6 18.a3[/font] remains equal.
• [font color="magenta"]11...e5 12.dxe5 Ne8 13.0-0 Bxe5 14.Bh6 Ng7[/font] remains equal.

• The Bishop redploys on the queenside.
• [font color="red"]8...b6 9.b4 a5 10.a3 axb4 11.axb4 Na6 12.Bxa6 Rxa6[/font] remains equal (Zhao Xue-Bok, IT B, Wijk aan Zee, 2014)
• [font color="blue"]8...Bg4!? 9.Qc2! Nfd7 10.Bxb8 Nxb8 11.h3 Bc8 12.f4[/font] gives White the advantage in space (Wang Yue-Carsen, IT, Nanjing, 2009).

• The game is equal.

• The reader will not that Black's queenside is badly cramped.
• If [font color="red"]10...Re8 11.0-0[/font] then:
• [font color="red"]11...e5 12.Nxe5 Nxe5 13.Bxe5 Bxe5 14.dxe5 Rxe5 15.Ne2[/font] remains equal.
• If [font color="darkred"]11...Qa5 12.Be2[/font] then:
• If [font color="darkred"]12...e5 13.Nxe5 Nxe5 14.Bxe5 Bxe5 15.dxe5 Rxe5[/font] then:
• [font color="darkred"]16.Qd4 Nd7 17.b4 Qd8 18.e4 dxe4 19.Nxe4[/font] gives White better development and a freer game.
• [font color="darkorange"]16.Bg4!? Bxg4! 17.Qxg4 Na6 18.Qd4 Rae8 19.Rfd1 Qd8[/font] gives White a slight advantage; the White Queen can remain at d4 for now.
• [font color="magenta"]12...b6 13.cxb6 axb6 14.a3 Ba6 15.Bxa6 Nxa6 16.Qc2[/font] gives White more freedom.

• If [font color="red"]12...Qb6 13.0-0 Nbd7 14.Qd4 Re8[/font] then:
• [font color="red"]15.Rc2 Qd8 16.Rd1 Qe7 17.Re2 Ne6 18.Qd3 ‚ 18...b6[/font] remains equal.
• If [font color="darkred"]15.Bh2 Ne6 16.Qd2 Nc7 17.Nd4 Bxe5 18.Bxe5 Rxe5 19.Na4[/font] gives White more activity for his minor pieces, a Rook on the open file and the initiative against the Black Queen; Black has an active Rook.
• [font color="magenta"]15...Qxb2 16.Nxd5 Qxd4 17.exd4 cxd5 18.dxc5 Nxe5 19.Bxe5 Bxe5 20.Rfe1[/font] gives White the initiative against Black's centralized Bishop; Black has an extra pawn and the Bishop pair. The game is equal after 20...f6, but weakens Black's kingside.

[center]BLACK: Alexander Grischuk[/center]
[center][/center]
[center]WHITE: Boris Gelfand[/center]
[center]Position after 13...Nc4e6[/center]

• White brings his King to safety before taking further action.
• [font color="red"]14.b5 Re8 15.h4 Nef8 16.Qd4 h6 17.Bc2 Qe7[/font] with the idea of either 18...Nxe5 or 18...Nc5 is equal.

• If [font color="red"]16...Be6[/font] (blockading White's head pawn) [font color="red"]17.b5[/font] then:
• If [font color="red"]17...Qe7 18.bxc6 bxc6 19.Ne2 Nc4[/font] then:
• [font color="red"]20.Bd3 f6 21.Bxc4 dxc4 22.exf6 Bxf6 23.Ne5[/font] is equal; Black has the Bishop pair against Knights; White has better pawn structure and a presence in the center.
• [font color="magenta"]20.Qc3 f6 21.Bd3 fxe5 22.Nxe5 Rxf4 23.Nxc6 Qd7[/font] is equal.
• [font color="darkred"]17...Rc8 18.bxc6 Rxc6 19.Bd3 Qa8 20.Qe3 Rfc8 21.Nb5[/font] forces the echanges of Rooks, after which the presence of Black's isolated d-pawn favors White in a game dominated by minor pieces.

• White's intention is to weaken Black's queenside pawns.

• If [font color="red"]17...Bd7 18.a4 fxe5 19.Nxe5 Qh4[/font] then:
• [font color="red"]20.Ne2 Nxa4 21.Ba2 Nb6 22.Qd3 Bxe5 23.fxe5 Qe7[/font] gives Black an estra pawn, but White is making a try to get it back by exploiting Black's pawn weaknesses.
• [font color="darkred"]20.bxc6 bxc6 21.Ne2 Nxa4 22.Qe3 Qe7 23.Ba2 Qd6[/font] gives Black an extra pawn, but White has pressure on the backward c-pawn.

• If [font color="red"]18.Bd3 fxe5[/font] then:
• [font color="red"]19.fxe5 Rxf3 20.Bxc4 Bxh3 21.bxc6 bxc6 22.Nxd5 Qg5[/font] is equal.
• If [font color="darkred"]19.Nxe5!? Bxe5 20.fxe5 Nd2[/font] then:
• If [font color="darkred"]21.Rfd1 Qg5 22.Kh1 Nf3[/font] then:
• [font color="darkred"]23.Qe3 Qxe3 24.fxe3 Nxe5 25.bxc6 bxc6 26.Bc2 Bf5[/font] gives Black an extra pawn, but it will soon be recaptured.
• [font color="darkorange"]23.gxf3? Bxh3 24.Rg1 Qh6 25.Qe3 Rf4 26.Rg3 d4.[/font]
• [font color="magenta"]21.bxc6 bxc6 22.Rfd1 Qg5[/font] transposes into the text.

• Much safer is to capture with the pawn.
• If [font color="red"]20.fxe5[/font] then:
• [font color="red"]20...Rxf3 21.Bxc4 Bxh3[/font] then:
• If [font color="red"]22.Bb3 Be6[/font] then:
• [font color="red"]23.Qc5 Bxe5 24.Qxc6 Bf7 25.Nxd5 Rxb3 26.axb3 Bxd5[/font] remains equal.
• [font color="burgundy"]23.Qa4 Rc8 24.Nxd5 cxd5 25.Rxc8 Bxc8 26.gxf3 Qg5+[/font] remains equal.
• If [font color="darkred"]22.Nxd5 Qg5[/font] then:
• [font color="darkred"]23.Ne3+ Kh8 24.Qe4 Rf4 25.Qxc6 Rc8 26.Qb5 Rcf8[/font] gives Black kingside activity n compensation for a pawn; White's passed e-pawn provides counterplay.
• [font color="magenta"]23.Nc7+?? Kh8! 24.g3 Rxg3+ 25.Kh2 Rg2+ 26.Kxh3 Rf8[/font] gives Black an easy win against a White King exposed to a storm on the heath.
• If [font color="darkred"]20...Bxh3 21.Bxc4 Rxf3 22.Nxd5[/font] then:
• [font color="darkred"]22...Qg5 23.Ne3+ Kh8 24.Qe4 Rf4 25.Qxc6 Rc8 26.Qa6 Rcf8[/font] is equal.
• If [font color="magenta"]22...cxd5?? 23.Qxd5+ Qxd5 24.Bxd5+[/font] then:
• If [font color="magenta"]24...Rf7[/font] then White wins after [font color="magenta"]25.gxh3 Rd8 26.Bxf7+ Kxf7 27.Rc7+.[/font]
• [font color="darkorange"]24...Kh8[/font] drops a piece to [font color="darkorange"]25.Bxf3 Rf8 26.gxh3.[/font]

[center]BLACK: Alexander Grischuk[/center]
[center][/center]
[center]WHITE: Boris Gelfand[/center]
[center]Position after 20.Nf3e5:p[/center]

• Black has the initiative.

• This move is not possible in the lines after 20.fxe5.

• Black's Knight is safe and can safely play to f3 with check.

• White loses a tempo by failing to prevent the check.
• If [font color="red"]23.Kh1[/font] (preventing 23...Nf3+) [font color="red"]23...Nf3[/font] then:
• [font color="red"]24.Qe3 Qxe3 25.fxe3 Nxe5 26.e4 d4 27.Na4 Be6[/font] gives Black an extra pawn, but White has pressure on Black's backward c-pawn.
• If [font color="darkred"]24.gxf3??[/font] then Black wins after [font color="darkred"]24...Rxf3! 25.Bf1 Bxh3 26.Qd2 Qh5.[/font]

• Black maintains a small advantage.
• [font color="red"]24...Qxe5!? 25.gxf3! Qh5 26.Kg1 Bxh3 27.f4 Bg4 28.Be2[/font] is equal.

• If [font color="red"]26.Bc2 Nc4 27.e4 Ne3 28.Rd2 Nxc2 29.Rdxc2[/font] then:
• [font color="red"]29...dxe4 30.Nxe4 Bf5 31.Re2 Bxe4 32.Rxe4 Rac8 33.Rc5 Rc7[/font] gives Black an extra pawn.
• [font color="darkred"]29...Be6 30.exd5 cxd5 31.Re2 Bf7 32.Rd1 Rfd8[/font] is equal.

• If [font color="red"]29.Nc5 Rf2 30.Be6[/font] then:
• [font color="red"]30...Kh6 31.Bxc8 Rxc8 32.a4 Rb8 33.Rxd4 Rbb2[/font] also gives Black both rooks on the seventh rank.
• [font color="darkred"]30...Bxe6 31.Nxe6+ Kh6 32.Rc5 Nd7 33.Rxc6 Rbb2[/font] continues to give Black a small advantage two Rooks on the seventh rank in an active game for both sides.

• If [font color="red"]31.Nd3[/font] then:
• [font color="red"]31...Rd2 32.Nxb4 Rxd4 33.Ba6 Bxa6 34.Nxa6 Rxe4[/font] leaves Black a pawn to the good and White with reasonable drawing chances.
• [font color="darkred"]31...Nxd3!? 32.Rxd3 Rbb2[/font] is equal.

[center]BLACK: Alexander Grischuk[/center]
[center][/center]
[center]WHITE: Boris Gelfand[/center]
[center]Position after 32.Nc3a4[/center]

• If [font color="red"]32.Nd3? Nxd3[/font] then:
• [font color="red"]33.Bxd3 Rxg2 34.Rxc6 Rh2+ 35.Kg1 Rbg2+ 36.Kf1 Bxh3![/font] Black soon gives mate.
• [font color="darkred"]33.Rxd3 Rxg2 34.e5 Bf5 35.Re3 Rh2+ 36.Kg1 Bxh3[/font] confines the White King to a square from which it cannot move.

• Black sacrifices the exchange for two pawns that figure prominately in the remainder of the game.

• The text move is forced.
• [font color="red"]33.gxh3?[/font] loses to [font color="red"]33...Rh2+ 34.Kg1 Nf3+ 35.Kf1 Rbf2#.[/font]

• For the exchange, Black as two pawns and activity aimed at the White King.

• If [font color="red"]36.Bf1 Bxf1 37.Rxf1 h5[/font] then:
• [font color="red"]38.Rdd1 h4+ 39.Kh3 Rb3+ 40.Kg2 Rg3+ 41.Kf2 Kg6[/font] still gives Black dangerous passed pawns/
• If [font color="darkred"]38.Rb4 h4+ 39.Kh3 Rc2[/font] then:
• [font color="darkred"]40.Ra4 Rc3+ 41.Kh2 g4 42.Rxa7+ Kg6 43.Ra8 Nf3+[/font] allows Black's connected passers to advance closer to the queening squares.
• [font color="magenta"]40.Rb7+ Kg6 41.Rxa7 Rc3+ 42.Kh2 Rg3 43.Rc7 g4[/font] gives Black an extra pawn and advanced connected passers.

• White's King is getting its bell rung. The Black kingside pawns are the hammer; the Rook at b2 is the anvil.

• Black now has three pawns against an exchange.

• Black material advantage is only one theoretical pawn, but it may be more important that it is four figures against one.
• If [font color="red"]39.Bf1? h4+! 40.Kf2 Kf6[/font] then:
• If [font color="red"]41.Rd4[/font] then Black wins after [font color="red"]41...Kf5 42.Rd8 g4 43.Ke3 Bd5 44.Rh8 Kg5.[/font]
• If [font color="darkred"]41.Ke3[/font] then Black wins after [font color="darkred"]41...Kf5 42.Rf2+ Bf3 43.Rb2 Bd5 44.Rb8 Ng4+.[/font]

• At g1, the King cannot move forward.
• [font color="red"]41.Kf1 Nf6 42.Re3 g4 43.Bd3 Bxd3+ 44.Rxd3 c5[/font] continues to give Black a clear advantage with three pawns for the exchange and connected passers on the kingside; nevertheless, the spped of White's Rook and the position of White's King prevent this from being a sure win for Black.

[center]BLACK: Alexander Grischuk[/center]
[center][/center]
[center]WHITE: Boris Gelfand[/center]
[center]Position after 41.Kf2g1[/center]

• Black fails to capitalize on a winning opportunity.
• [font color="red"]41...h3! 42.Rxe4 h2+ 43.Kh1 Nf2+ 44.Kxh2 Nxe4[/font] leaves Black winning two pawns up in a minor piece ending.

• If [font color="red"]43.a4 a5[/font] (White has no reserve pawn tempi) [font color="red"]44.Bc8[/font] then:
• [font color="red"]44...Kh5 45.Rf2 Nd5 46.Bf5 Bxf5 47.Rxf5 h3 48.Rf8 g4[/font] gives Black three pawns for the exchange and two connected passers, but the freedom of White's Rook make it for Black to make more than a small advantage of the situation.
• [font color="darkred"]44...Kf7 45.Re1 Kg6 46.Re2 c5 47.Re1 Bf5 48.Bb7 Bd7[/font] still gives Black three pawns for the exchange, but this is unlike to yield a decisive advantage for either side.

• White puts his Bishop on the wrong diagonal.
• [font color="red"]46.Bc2[/font] (a more flexible square for the Bishop, providing access to the a4/e8 diagonal) [font color="red"]46...h3 47.Kh2 Nh5 48.Be4 Bxe4 49.Rxe4 Kg5[/font] gives Black a strong advantage.

[center]BLACK: Alexander Grischuk[/center]
[center][/center]
[center]WHITE: Boris Gelfand[/center]
[center]Position after 46.Re1d1[/center]

• Black brings his Bishop to a safer post before continuing to advance the pawns.
• If [font color="red"]46...h3? 47.Kh2![/font] then:
• If [font color="red"]47...Bd5 48.Bc2[/font] then:
• [font color="red"]48...a5 (
• [font color="magenta"]48...Nh5 49.Bd1 Nf6 50.Rf5 Kg6 51.Bc2 Kf7[/font] leaves Black's kingside advance stalled.
49.Bd1 c5 50.Bc2 c4 51.Rf5 Kg7 52.Rg5+ Kf7[/font] leaves Black's kingside advance stalled, giving Black serious drawing chances.+++
• [font color="darkred"]47...Nh5 48.Bf1 Bd5 49.Be2 Nf6 50.Rf5 Kg6 51.Bd3 Kf7[/font] leaves Black's kingside advance stalled.
[
• [font color="blue"]46...g3? 47.Rf5! Bd5 48.Rxf6+ Kg5 49.Rg6+ Kf4 50.Bf1[/font] leaves White up by a Rook for three pawns; Black is now fighting for his life as the White Bishop and King stall the kingside pawns freeing the Rook to devour Black's queenside pawns.

• If [font color="red"]47.Bf5 g3 48.Be6 a6 49.a4 a5[/font] then:
• If [font color="red"]50.Kf1 Bxe6 51.Rxe6 Kg5[/font] then:
• If [font color="red"]52.Kg2[/font] then Black wins after [font color="red"]52...Nd5 53.Re8 Nf4+ 54.Kf3 g2 55.Kf2 c5.[/font][/li
• [font color="magenta"]52.Rxc6 h3 53.Rc5+ Kf4 54.Rxa5 Ng4 55.Rb5 g2+[/font] assures Black of pushing a pawn over for a new Queen.
• If [font color="darkred"]50.Bxd5[/font] then Black wins after [font color="darkred"]50...cxd5 51.Kg2 d4 52.Rxa5 d3 53.Rb5.[/font]

• Black's connected pawns are his greatest asset.

• If [font color="red"]48.a4 Nh5 49.Rf5 Be6[/font] then:
• If [font color="red"]50.Rf8 h3[/font] then:
• [font color="red"]51.Re8 h2+ 52.Kh1 Bd5+ 53.Bg2 Bxg2+ 54.Kxg2 Kg5[/font] Black's advanced passers triumph.
• [font color="magenta"]51.Bxh3[/font] loses to [font color="magenta"]51...Bxh3 52.Kh1 c5 53.Kg1 Kg5.[/font]
• If [font color="darkred"]50.Re5[/font] then Black wins after [font color="darkred"]50...Nf4 51.Bg2 Bd5 52.Bxd5 cxd5 53.Kh1 h3.[/font]

• [font color="red"]49.Bd7 Ng5 50.Re3 c5 51.Bc8 Nf3+ 52.Kg2 Nd2+[/font] allows Black's pawns to continue to advance.

• Black all but guarantees a new Queen.

• If [font color="red"]51.Rxd5 h3 52.Rd6+ Kg5[/font] then:
• If [font color="red"]53.Rd5+[/font] then after [font color="red"]53...Kg4 54.Rd4+ Kf3 55.Rh4 h2+ 56.Kf1 g2+[/font] Black wins.
• If [font color="darkred"]53.Kf1[/font] then after [font color="darkred"]53...h2 54.Rd5+ Kg4 55.Rd4+ Kf3[/font] Black wins.

[center]BLACK: Alexander Grischuk[/center]
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[center]WHITE: Boris Gelfand[/center]
[center]Position after 52.Re51d5[/center]

• If [font color="red"]52.Re6+ Kg5 53.Kf3 d3[/font] then:
• If [font color="red"]54.Rd6 Ng4! 55.Rd8 Ne5+[/font] then:
• If [font color="red"]56.Kg2 Kf4[/font] then:
• If [font color="red"]57.Rf8+[/font] then after [font color="red"]57...Ke4 58.Rf1 d2 59.Rb1 Nd3 60.Kh3 Nc1[/font] the d-pawn will queen.
• [font color="burgundy"]57.Kh3 Ke4 58.Rf8 d2 59.Rf1 Nf3 60.Rb1 Ke3[/font] allows Black to push a pawn over no matter how White plays.
• No better is [font color="#ECA11A"]56.Ke4 g2 57.Rg8+ Ng6.[/font]
• If [font color="darkred"]54.Kg2 d2[/font] then:
• If [font color="darkred"]55.Rd6[/font] then Black wins after [font color="darkred"]55...d1Q 56.Rxd1 Nxd1 57.Kf3 Nc3.[/font]
• If [font color="magenta"]55.Re5+[/font] then mate soon follows [font color="magenta"]55...Kf4 56.Rd5 h3+ 57.Kf1 Kf3 58.Rxd2 g2+.[/font]

• Of course, Black easily wins any King-and-pawn ending.

• If [font color="red"]53.Rd8[/font] then Black wins after [font color="red"]53...d2 54.Rxd2 h3+ 55.Kxg3 Ne4+.[/font]

• The text is not the strongest move. The King should come forward into the action.
• Black has an easy win after [font color="red"]56...Ke6 57.Rd8 h3 58.Kxg3 Ne4+ 59.Kf3 d2 60.Rd4 h2.[/font]

• If [font color="red"]57.Rd8+ Ke7[/font] then:
• If [font color="red"]58.Rd5 Ke6 59.Rd8 Ke5 60.Re8+ Kd4 61.Rd8+ Kc3 62.Rc8+[/font] then:
• If [font color="red"]62...Kb2 63.Rb8+ Kc2 64.Rc8+ Kd1![/font] then:
• [font color="red"]65.Rc4 d2 66.Rxh4 Ke1 67.Rd4 d1Q+ 68.Rxd1+ Nxd1[/font] Black wins by taking White's a-pawn and bringing the newly passed a-pawn home.
• [font color="burgundy"]65.Kg2 d2 66.Rd8 Kc2 67.Rc8+ Kb3 68.Rb8+ Ka3[/font] White must surrender the Rook to stop the pawn.
• If [font color="darkred"] 62...Kb3 63.Rb8+ Kxa4[/font] then:
• If [font color="darkred"]64.Kg2[/font] then Black wins after [font color="darkred"]64...d2 65.Rd8 d1Q 66.Rxd1 Nxd1.[/font]
• If [font color="magenta"] 64.Ke3 h3[/font] then:
• [font color="magenta"]65.Rh8 h2 66.Rh7 h1Q 67.Rxh1 Nxh1[/font] Black wins.
• a) If [font color="darkorange"]65.Rf8[/font] then [font color="darkorange"]65...h2[/font] wins.
• b) If [font color="purple"]65.Rg8[/font] then [font color="purple"]65...h2[/font] wins.
• If [font color="darkred"] 58.Rc8 d2[/font] then:
• If [font color="darkred"]59.Kg2[/font] then Black wins after [font color="darkred"]Nd3 60.Rc4 d1Q.[/font]
• If [font color="magenta"]59.Rd8[/font] then Black wins after [font color="magenta"]59...d1Q+ 60.Rxd1 Nxd1.[/font]

• If [font color="red"]59...Ke6[/font] then Black wins after [font color="red"]60.Rd8 Ke5 61.Rd7 Kf5 62.Rd4 Ke5 63.Rd8 h3.[/font]

• If [font color="red"]61...h3[/font] then Black wins after [font color="red"]62.Kxg3 Ne4+ 63.Kf3 d2 64.Rd5+ Ke6 65.Kxe4 h2.[/font]

• If [font color="red"]63.Re8+ Kd4 64.Rd8+ Kc3[/font] is identical to the [font color="red"]main line of the notes to White's 57th move[/font] at Black's 61st move.

• If [font color="red"]67.Rxd2[/font] then after [font color="red"]67...Nxd2 68.Kxh2 Nc4 69.Kg3 Nb6[/font] Black wins.
• Gelfand resigns.

Reigning champion Magnus Carlsen and former champion Viswanathan Anand drew a marathon game seven in 122 moves today in rematch for the world chess championship in Sochi on the Russian coast of the Black Sea.

The same two players met a year ago in Chennai, sometimes still called Madras, in southern India with Anand beginning the match with the title and Magnus winning it in ten games of a scheduled twelve-round event.

At the end, the game was automatically drawn when Rooks were exchange, leaving White (Magnus) with a King and a Knight against Anand's lone King. It is not possible for a Knight and King to deliver mate against a lone King.

Maguns has won two games of the scheduled twelve-round rematch to Anand's one and thus leads 4 points to 3. The first player to obatin 6½ points (one full point for a win and a half point for a draw) will win the match.

The eighth game is scheduled for tomorrow at 3 pm Sochi time (4 am PST). Anand will play White.

Vishy Anand and Magnus Carlsen drew the eighth game of their world championship in Sochi today in 41 moves.

Magnus, the reigning champion who won the title from Vishy a year ago, leads the match 4½-3½ with four games remaining.

If the match ends deadlocked at 6-6, a playoff will be held on Thursday, November 27, consisting of rapid and blitz games. Magnus would like to avoid that eventuality, as Anand, one of the best speed chess players ever, would have to be at least a slight favorite to take the world title back from Magnus in that format.
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