[Event "Olympiad"] [Site "masterchessopen.com Buenos Aires (Argentina)"] [Round "0"] [White "Fedder Steen (DEN)"] [Black "Vadasz Laszlo (HUN)"] [Result "1-0"] [WhiteElo "2400"] [BlackElo "2505"] [ECO "D82"] [Opening "Gruenfeld: 4.Bf4 Bg7 5.e3"] 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.cxd5 Nxd5 7.Nxd5 Qxd5 8.Bxc7 Na6 9.Bxa6 Qxg2 10.Qf3 Qxf3 11.Nxf3 bxa6 12.Rc1 Bb7 13.Ke2 f6 14.Rc5 e6 15.Rhc1 Rf7 16.Bg3 Rd8 17.Ne1 Rfd7 18.Bc7 Re8 19.Nd3 Be4 20.R5c3 e5 21.dxe5 fxe5 22.Nc5 Rxc7 23.Nxe4 Rxc3 24.Rxc3 a5 25.Rc4 Re6 26.Ra4 Ra6 27.Kf3 Bf8 28.a3 Be7 29.b4 Bd8 30.b5 Re6 31.Rc4 Bb6 32.Rc6 Re7 33.a4 Kg7 34.Nd6 e4+ 35.Nxe4 Re5 36.Nd6 Rh5 37.Kg2 Rg5+ 38.Kf3 Rh5 39.Nc8 Rh4 40.Nxa7 Bxa7 41.Rc7+ Kh6 42.Rxa7 Rxa4 43.e4 g5 44.Ra6+ Kg7 45.h4 gxh4 46.b6 Rb4 47.Rxa5 Kg6 48.Kf4 h6 49.Ra6 Kh5 50.f3 Rb5 51.b7 Rxb7 52.Ra5+ Kg6 53.Kg4 Rb1 54.Ra6+ Kg7 55.Kxh4 Rg1 56.f4 Re1 57.e5 Rg1 58.Kh5 {#r} 1-0