C47 - BELGRADE GAMBIT ACCEPTED - 6.Bc4 Bb4+
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Costa,Francesco - Adamczyk,Wieslaw
TGT5-12 E-mail, 1999

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nd5 Nxe4 6.Bc4 Bb4+!? Accepting the challenge Black goes pawn hunting. Such move is seldom employed although it has not been refuted. 7.c3 dxc3 8.0-0 0-0 9.Qb3 Monson's move 

[9.Re1 suggested by Gutman 9...Nd2 10.Bd3 c2 11.Bxh7+ Kxh7 12.Qxc2+ Kg8 13.Bxd2 Bxd2 14.Qxd2 d6 15.Re3 Be6 16.Rae1 Re8 17.Qd3 Ne5 18.Nxe5 dxe5 19.Rxe5 c6 20.Nf4 Qxd3 21.Nxd3 b6 22.Nf4 Bd7 23.f3 Rxe5 24.Rxe5 Rd8 25.b4 Kf8 26.Kf2 Bc8 27.a3 Ba6 28.Ke1 Bb5 29.h4 Ra8 30.Ne2 Rd8 31.Nf4 Ra8 32.Ne2 Rd8 33.Nf4 1/2-1/2 Kraft,K (2630)-Read,M (2571)/ICCF 1999;

9.Qc2?! It's weak: 9...Nd2 10.Bxd2 cxd2 11.Nxb4 Nxb4 12.Qxd2 Nc6 And White's hasn't enough compensation.;

9.a3 Bc5! 10.Qc2 Nd2 11.Bxd2 cxd2 12.Bd3 d6 13.Bxh7+ Kh8 14.Bf5 Ne5 15.Nxe5 dxe5 16.Qxc5 Bxf5 17.Ne3 Bd3 18.Rfd1 Be2 19.Rdb1 Re8 20.f3 Qd4 21.Qc3 d1Q+ 22.Rxd1 Bxd1 23.Rxd1 Qxc3 24.bxc3 Rad8 25.Rb1 Rd3 26.Kf2 b6 27.Rc1 Red8 28.Nc4 f6 29.a4 Rd1 30.Rc2 Ra1 0-1 Bednar,J (2368)-Virostko,P (2319)/Czech Rep CZE 2005] 

9...Nc5 An interesting idea. Black aims to gain a move in order to reach e6 with the knight, consolidating the position and creating difficulties to White in the development of the dark square bishop. These difficulties will limit White's possibilities to launch a quick attack with all the pieces. 

[Black should better avoid further pawn hunting: 9...cxb2!? 10.Bxb2 Ba5 11.Qc2 Ng5 (11...Re8? It's an apparently good move that instead leads to disaster. 12.Rae1!! Bxe1 13.Rxe1 Nd6 14.Rxe8+ Nxe8 15.Qe4 Nd6 16.Qg4 g6 17.Nf6++- ) 12.Nxg5 Qxg5 13.f4 Qh6 14.Rf3 d6 15.Rg3 Kh8 16.Bxg7+ Qxg7 17.Rxg7 Kxg7 18.Rd1 f6 19.Rd3 Bb6+ 20.Nxb6 axb6 21.Rg3+ Kh8 22.Qe2 Bf5 23.Qh5 Ne7 24.Qh6+- Bg6 25.Be6 f5 26.Qh4 Rae8 27.Bd7 Kg7 28.Bxe8 Rxe8 29.Re3 Kf7 30.Qe1 Bh5 31.h3 Bg6 32.Qe2 Kf8 33.g4 fxg4 34.hxg4 Nd5 35.Rxe8+ Bxe8 36.Qe4 1-0 Costa,F-Alberny,M ICCF EM/H/021 2000; 

More challenging is the Bishop withdrawal 9...Bc5 10.Bd3 Re8 11.Bf4 Considering the output of this game, White needs to look for something else. (For instance: 11.Bxe4!? Rxe4 12.Bg5 Qf8 13.Rae1 ) 11...d6! 12.bxc3 Nxf2 13.Rxf2 Ne5 14.Bxh7+ Kxh7 15.Be3 c6 16.Bxc5 dxc5 17.Nxe5 Rxe5 18.Nf6+ Kg6 19.Rd1 Qe7 20.Qb1+ Bf5 21.Rxf5 Rxf5 22.Ne4 Rd8 23.Rxd8 Qxd8 24.Ng3 Qg5 25.Nxf5 Qxf5 26.Qxb7 Qe4 27.Kf2 Qc2+ 28.Kf1 Qxc3 29.Qxa7 Qc4+ 30.Kf2 Qf4+ 31.Kg1 c4 32.Qc5 f6 33.Qxc6 Qd4+ 34.Kf1 Qa1+ 35.Ke2 Qxa2+ 36.Kf3 Qb3+ 37.Kf4 Kh6 38.g4 Qb8+ 39.Kf3 Qb4 40.Qd5 Qb3+ 41.Kf2 Qc2+ 42.Kg1 g6 43.g5+ fxg5 44.Qd4 Kh7 45.Qd7+ Kg8 46.Qd5+ Kg7 47.Qe5+ Kf7 48.Qxg5 Qd3 49.Qf4+ Ke6 50.Qg4+ Ke5 0-1 Negele,D (2481)-Ivanovic,Z (2303)/ICCF Email 2001] 

10.Qc2 Ne6 [10...cxb2 11.Bxb2 and white has solved the issue of the bishop development (but also 11.Qxb2 Na4 12.Qc2 has to be taken into account) ] 11.bxc3 In order to free the e1 square for the Rook 11...Bc5 12.Re1 Re8 [A natural move. But a more critical alternative is 12...Ne7! threatening to change the knights or to deliver the knight to g6, thus enhancing Black defense possibilities. Furthermore Black can occupy the center with the d5 pawn pushing in c6 and d5. ] 13.Qe4 [or 13.Ng5 Nxg5 14.Rxe8+ Qxe8 15.Bxg5 ] 13...Be7 14.Bd3!? [A move to be considered is 14.h4 ] 14...g6 15.Nd4 Ncxd4 16.Nxe7+ Qxe7 17.cxd4 Qd8!? 18.d5! Ng7 19.Qb4 a5 20.Qc3 Rxe1+ 21.Qxe1 Qf6 22.Rb1 Qd4?! An aggressive defense but not the best [22...Qd8 23.Bb2 Ne8 (23...d6 24.Qc3 f6 25.Rc1 ) 24.Qc3 f6 25.Re1+/= ] 23.Be4?! Missing the opportunity to punish Black's 22nd move [23.Qe7!+/- ] 23...d6 24.Bb2 Qb4 25.Qe3! Nf5 26.Qg5 f6 27.Qf4 Bd7 28.Bxf6 Qa4 29.f3 Rf8 [29...Qxa2? 30.Bxf5 Bxf5 31.Qh6+- ] 30.Ba1 c5? Black doesn't see White's next combination. [It was urgent 30...Qxa2 with equality] 31.dxc6 bxc6 [31...Bxc6 32.Bd5+ Rf7 33.Qxa4 Bxa4 34.Rxb7 Be8 35.Bxf7+ Bxf7 36.Rb8+ Be8 37.Rxe8++- ] 32.g4! Qxa2 [32...Nd4 33.Qxd6 Nxf3+ 34.Bxf3 Qf4 35.Qxf4 Rxf4+- ] 33.gxf5 Qf7 [33...Be8 34.Qh6 Qf7 35.fxg6+- ; 33...Bxf5 34.Qh6+- Qf7 35.Bxf5 gxf5 36.Rb2 Qg6+ 37.Rg2 ] 34.Qh6 And Black resigned as it would lose at once after 34...gxf5 [No chances also after 34...Bxf5 35.Bxf5 gxf5 36.Kh1 Qe7 37.Rg1+ Kf7 38.Rg7+ ; Or after 34...Bc8 35.fxg6 ] 35.Kh1 Qg6 36.Rg1 1-0