[Event "It (open)"] [Site "masterchessopen.com - Mar del Plata (Argentina)"] [Round "1"] [White "Labollita Martin (ARG)"] [Black "Alegria Gregorio (ARG)"] [Result "1-0"] [WhiteElo "2383"] [BlackElo "1957"] [ECO "A09"] [Opening "Reti: 2.c4"] { Alegria Gregorio +0 =0 -1 } 1.Nf3 { 1 } 1...d5 2.c4 c6 3.b3 Bf5 4.Bb2 Nf6 ( 4...e6 5.g3 Nf6 6.Bg2 Be7 7.O-O O-O 8.d3 Nbd7 9.Nbd2 Re8 10.a3 a5 11.Bc3 Bf8 12.Re1 e5 13.cxd5 Nxd5 14.Bb2 Bg6 15.Nc4 Qc7 16.Rc1 N5b6 17.Nh4 Nxc4 18.Rxc4 Rad8 19.Nxg6 hxg6 20.h4 Bc5 21.Qc2 Qd6 22.Ra4 Bb6 23.Rd1 Nc5 24.Rc4 { ...1-0, Larsen Bent 2540 - Alegria Gregorio, Mar del Plata 1993 It (open) } ) 5.e3 e6 6.Be2 { = } 6...Nbd7 ( 6...h6 7.d3 Bb4+ 8.Nc3 Nbd7 9.O-O O-O 10.a3 Bd6 11.cxd5 exd5 12.e4 Bh7 13.exd5 Nxd5 14.Nxd5 cxd5 15.Re1 Re8 16.Bf1 Qb6 17.Rxe8+ Rxe8 18.b4 Nf8 19.Qa4 Ra8 20.Rc1 Bf5 21.Qb3 Qd8 22.g3 Be7 23.Nd4 Bg6 24.Ne2 Ne6 25.Bg2 Qb6 26.Nc3 { ...0-1, Bellon Lopez Juan Manuel 2415 - Larsen Bent 2610 , Linares 1981 It (cat.13) } ) ( 6...Bd6 7.O-O Nbd7 8.cxd5 exd5 9.d3 O-O 10.Nbd2 h6 11.Qc2 Re8 12.Rfe1 Bh7 13.Rac1 Qc7 14.Bf1 Rac8 15.Qb1 Qb8 16.Qa1 Re7 17.a3 Rce8 18.b4 Ne5 19.Nxe5 Bxe5 20.Nf3 Bxb2 21.Qxb2 Qd6 22.Qd4 b6 23.Qc3 Rc7 24.Nd4 Rec8 25.g3 Qd7 26.Nb3 { ...0-1, Ovsejevitsch Sergei 2320 - Dao Thien Hai 2565 , Warsaw 1991 Ch World (juniors) } ) 7.O-O ( 7.Nc3 h6 8.O-O Be7 9.cxd5 exd5 10.d3 O-O 11.Re1 Re8 12.Bf1 Bc5 13.h3 Qc7 14.Rc1 Rad8 15.a3 a5 16.Qc2 Bg6 17.Nb1 Bd6 18.Nbd2 Ne5 19.Nd4 Qe7 20.Ra1 Bh7 21.Qc3 Ra8 22.N4f3 Nfd7 23.Nh2 Qf6 24.d4 Ng6 25.Ng4 Qd8 26.e4 h5 { ...1-0, Roos Daniel 2435 - Beikert Guenther 2390 , Germany 1993 Bundesliga (2nd) South 1992/93 } ) 7...Bd6 8.d3 { } ( 8.d4 O-O 9.Nc3 Qe7 10.Nh4 Bg6 11.Nxg6 hxg6 12.f4 c5 13.Nb5 Bb8 14.dxc5 a6 15.Nd4 Nxc5 16.Nf3 Rd8 17.Qc2 Bd6 18.b4 Ncd7 19.c5 Bb8 20.Rfe1 e5 21.Bf1 a5 22.a3 axb4 23.axb4 Rxa1 24.Bxa1 e4 25.Nd4 Rc8 26.Qa2 g5 27.g3 gxf4 { ...1-0, Goric Esad 2368 - Martic Zlatko 2272 , Bosnjaci 2000 It (open) } ) ( 8.Nh4 Bxb1 9.Rxb1 g5 10.Nf3 Rg8 11.Qc2 Qc7 12.cxd5 Nxd5 13.g3 h5 14.a3 N5f6 15.Rfc1 h4 16.Kg2 O-O-O 17.Nd4 Kb8 18.b4 Rh8 19.Qb3 Be5 20.Nb5 Qb6 21.Nc3 Rh6 22.Na4 Qc7 23.b5 hxg3 24.hxg3 Rdh8 25.Rh1 Rxh1 26.Rxh1 Rxh1 27.Kxh1 Ne4 { ...1/2-1/2, Dittmar Peter 2285 - Schlindwein Rolf 2385 , Germany 1994 Bundesliga (2nd) South 1994/95 } ) 8...Bc7 { N } ( 8...O-O 9.h3 ( 9.Nh4 Bg6 10.Nxg6 hxg6 11.Nd2 e5 12.h3 Qe7 13.a3 e4 14.dxe4 dxe4 15.Qc2 Rad8 16.b4 c5 17.Nb3 b6 18.bxc5 Nxc5 19.Nxc5 Bxc5 20.Qc3 Rfe8 21.Rfd1 Bd6 22.Rd5 Qf8 23.Rg5 Bb8 24.g3 Bd6 25.Kg2 Bc5 26.h4 Nh7 27.Rd5 Rxd5 28.cxd5 { ...0-1, La Barrere Daniel - Henno Francois, Fouesnant 2002 It (open) } ) 9...e5 10.cxd5 cxd5 11.Nbd2 Qe7 12.Re1 Rac8 13.Bf1 Bg6 14.Nh4 Rfd8 15.Nxg6 hxg6 16.e4 dxe4 17.dxe4 Nh5 18.Qf3 Bb4 19.Red1 Rc2 20.Nc4 Bc5 21.Rd2 Rxd2 22.Nxd2 Nb6 23.Nc4 Nxc4 24.Bxc4 Rd2 25.Bc1 Rxf2 26.Qxf2 Bxf2+ 27.Kxf2 Qh4+ { 0-1, Otte Marco 2065 - Delander Adolf 2335 , Berlin 1995 It (open) "Berlin Summer" } ) ( 8...Qe7 9.Nbd2 ( 9.cxd5 exd5 10.Nbd2 Ba3 11.Bxa3 Qxa3 12.e4 Bg4 13.Nd4 Bxe2 14.Qxe2 O-O 15.Nf5 Rfe8 { 1/2-1/2, Heinsohn Thomas 2255 - Sprotte Norbert 2210 , Germany 1997 Bundesliga (2nd) North 1996/97 } ) 9...h6 10.Qc2 Bh7 11.Rfe1 { 1/2-1/2, Schneider Lars-Ake 2430 - Ermenkov Evgenij 2520 , Yurmala 1978 It } ) ( 8...h6 9.e4 ( 9.Nc3 Qe7 10.Re1 O-O 11.cxd5 cxd5 12.Bf1 e5 13.e4 Be6 14.d4 dxe4 15.Nxe4 Nxe4 16.dxe5 Nxe5 17.Rxe4 Nxf3+ 18.Qxf3 Qc7 19.Rc1 Qb8 20.Qc3 { 1-0, Bunzmann Dimitrij 2370 - Heyne Martin 1860 , Passau 1997 It (open) } ) 9...dxe4 10.dxe4 Nxe4 11.Bxg7 Rg8 12.Bxh6 Qf6 13.Nbd2 Nc3 14.Qe1 Qxh6 15.Rc1 Bh3 16.g3 Nxe2+ 17.Qxe2 Bxf1 18.Rxf1 O-O-O 19.Ne4 Be7 20.b4 Nf6 21.b5 Nxe4 22.Qxe4 Qg6 23.Qe3 Qd3 24.Qf4 Qf5 25.Qe3 Bc5 26.Qe2 Qd3 27.Qe5 Qxf3 28.Qxc5 { ...0-1, Taimanov Mark E 2439 - Popov Valerij 2578 , St. Petersburg 2001 It (active) } ) ( 8...Qc7 9.Nbd2 h5 10.Re1 Ng4 11.Nf1 f6 12.Rc1 g5 13.cxd5 exd5 14.Ng3 Bxg3 15.hxg3 h4 16.Nd4 Nxf2 17.Bh5+ Kd8 18.Kxf2 Qxg3+ 19.Kg1 h3 20.Qf3 Qxg2+ 21.Qxg2 hxg2 22.Nxf5 Rxh5 23.Kxg2 Kc7 24.Rh1 Rah8 25.Rxh5 Rxh5 26.Rf1 Nc5 27.Bxf6 Nxd3 28.Ng3 { ...1/2-1/2, Steiner Darko 2250 - Sorl Mihael, Nova Gorica 2002 It (open) } ) ( 8...a5 9.Nbd2 Nc5 10.Qc2 h6 11.Rad1 Bh7 12.Ne5 Qe7 13.Ndf3 O-O 14.Qb1 Nfd7 15.Nxd7 Nxd7 16.Qa1 e5 17.Rfe1 f6 18.Nh4 a4 19.cxd5 cxd5 20.Qb1 Bb4 21.Rf1 axb3 22.axb3 Nc5 23.g3 Nxb3 24.Bc3 Ra3 25.Bb2 Ra5 26.Bc3 Bxc3 27.Qxb3 Qb4 28.Rb1 { ...0-1, Reichstein Hans-Joerg 2245 - Specht O, Rheinland-Pfalz 1986 Ch RLP } ) 9.cxd5 exd5 10.Nd4 Bg6 11.Ba3 c5 12.Nb5 Bb8 13.d4 a6 14.N5c3 Ba7 15.dxc5 Nxc5 16.b4 Nce4 { ?! } ( 16...Ne6 { !? } 17.b5 d4 18.bxa6 bxa6 { } ) 17.b5 Rc8 18.Nxe4 Bxe4 { ?! } ( 18...Nxe4 { !? } 19.bxa6 bxa6 20.Qa4+ Qd7 { } ) 19.bxa6 Qa5 { ?! } ( 19...bxa6 { !? } 20.Bxa6 Rb8 21.Nc3 Qa5 { } ) 20.axb7 Rc7 21.Qb3 Nd7 22.Bb5 Rxb7 23.Nc3 Kd8 24.Bb4 Qb6 25.a4 Qg6 26.f3 Bxe3+ 27.Kh1 { } {#r} 1-0