C47 - BELGRADE GAMBIT ACCEPTED - 6.Bc4 Be7 7.0-0
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Midonet,Matthieu - Duport,N SUI (2200)
Gibraltar Open Caleta ENG (4.65), 27.01.2012

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nd5 Nxe4 6.Bc4 Be7 7.0-0 Such variation is important because Black can force it by transposition, initially refusing the gambit and then grabbing the pawn only after White has castled: 5 ... Be7 00 6.Bc4 7:00 Nxe4. As a matter of fact this move sequence was actually adopted in the present game. 7...0-0 8.Re1 Nf6 9.Nxe7+ [The Exchange sacrifice isn't good: 9.Rxe7? Nxe7 10.Nxf6+ gxf6 11.Bh6 d5-/+ ] 9...Nxe7 10.Qxd4 d5 11.Bd3 This is the key position of such variant. 11...Bf5 Several alternatives are available to Black 

[11...b6 12.b4 Bb7 13.Bb2 Re8 14.Ne5 Qd6 15.f3 c5 16.bxc5 bxc5 17.Ba3 Rac8 18.Qa4 a6 19.Qa5 Ng6 20.Nxg6 Rxe1+ 21.Rxe1 hxg6 22.Rb1 Rc7 23.Rb6 Qf4 24.Rb1 d4 25.Bc1 Qd6 26.Bc4 1/2-1/2 Conterno,D (2190)-Coyne,D/ICCF 2008; 

11...Bg4 12.Ne5 Be6 13.Bg5 Nf5 14.Qf4 Nd6 15.Rad1 a5 16.c4 dxc4 17.Bc2 a4 18.Rd4 a3 19.bxa3 Rxa3 20.Qh4 h5 21.g4 Rxa2 22.Bb1 Ra1 23.gxh5 Qe7 24.h6 Rxb1 25.hxg7 Rxe1+ 26.Kg2 Nh7 27.Bxe7 Re8 28.Bxd6 cxd6 29.Nf3 Re5 30.Nxe5 dxe5 31.Rd8 Rxd8 32.Qxd8+ Kxg7 33.Qd6 Kf6 34.h4 Kf5 35.Qd1 Kg6 36.Qf3 b5 37.Qe4+ Kh6 38.Qxe5 b4 39.f4 c3 40.f5 Bb3 41.Qf4+ Kh5 42.Kg3 c2 43.Qd2 Ba4 44.Qd5 Be8 45.f6+ Kg6 46.Qe4+ Kxf6 47.Qxc2 Kg7 48.Qe4 Bd7 49.Qd4+ 1-0 Monson,B (2250)-Johnson,G (2329)/APCT BG-Thematic Prelim-3 2000;

11...Ng6 12.Bg5 (12.b4 seems like a possible improvement. For instance 12...Bg4 13.Ne5 Nxe5 14.Rxe5 ) 12...c6 13.Bxf6 Qxf6 14.Qxf6 gxf6 15.a4?! Bd7 16.a5 Rfe8 17.a6 b6 18.Nd4 Rxe1+ 19.Rxe1 Ne5 20.Bf5 Bxf5 21.Nxf5 Re8 22.Kf1 Kf8 23.Nd6 Rd8 24.Nf5 Re8 25.f4 Nc4 26.b3 Nd2+ 27.Kf2 Ne4+ 28.Kf1 c5 29.Re3 Nd6 30.Rxe8+ Nxe8 31.c3 Nc7 32.Nd6 Nxa6 33.Nb5 Ke7 34.Nxa7 Kd7 35.Ke2 Kc7 36.g4 Kd7 37.Ke3 Nc7 38.f5 Ne8 39.Nb5 Nd6 40.Na3 Kc6 41.Nb1 c4 42.b4 Nb5 43.Kd2 Kd6 44.Kc2 Ke5 45.Nd2 Kf4 46.Nf1 Kf3 47.h3 Nd6 48.Nd2+ Kg3 49.Nf1+ Kf2 0-1 Adamczyk,W-Costa,F/TGT5-12 email 1999;

11...Nf5 12.Qc3 Nd6 13.Bg5 c6 14.Re3 Bf5 15.Rae1 Bxd3 16.cxd3 Re8 17.Rxe8+ Ndxe8 18.Qb4 Nd6 19.Bf4 Nfe8 20.a4 Rc8 21.Qc3 c5 22.Qe5 d4 23.Qd5 a5 24.Nd2 b6 25.b3 Qf6 26.g3 h6 27.Nc4 Nxc4 28.bxc4 Kf8 29.Qd7 Qd8 30.Qb7 g5 31.Bd2 Nd6 32.Qd5 Qf6 1/2-1/2 Schenning,A (2055)-Simmelink,J (2450)/TGT5-2 email 1998]

12.Qb4!? It's difficult to agree with such move [12.Rxe7! Bxd3 13.Qe5 Bxc2 14.Qxc7 Qxc7 15.Rxc7 Be4 16.Nd4+/= ] 12...Bxd3 13.Rxe7 Bxc2 14.Bf4 Nd7 15.Re2 Bd3 16.Rd2 Be4 17.Qxb7 Qf6 18.Qxc7 Nb6 19.Qe5 Qg6 20.Qg5 Nc4 21.Re2 h6 22.Qxg6 fxg6 23.Bg3 Bxf3 24.gxf3 Rxf3 25.b3 Nb6 26.Re7 Rf7 27.Rxf7 Kxf7 28.Rc1 Rc8 29.Rc7+ Rxc7 30.Bxc7 Ke6 31.Bxb6 axb6 32.a4 Ke5 33.b4 Kd4 34.f4 Kc4 35.a5 bxa5 36.bxa5 Kb5 37.Kf2 Kxa5 38.Ke3 Kb5 39.Kd4 Kc6 40.Ke5 Kc5 41.Ke6 d4 42.Kf7 d3 43.Kxg6 d2 44.Kxg7 d1Q 45.Kxh6 Qg4 46.f5 Qxf5 0-1