[Event "It (open)"] [Site "masterchessopen.com Brunnen (Germany)"] [Round "0"] [White "Donner Jan-Hein (NED)"] [Black "Kupper Josef (SUI)"] [Result "1-0"] [WhiteElo "2430"] [BlackElo "2374"] [ECO "E47"] [Opening "Nimzo-Indian: 4.e3 O-O 5.Bd3"] 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 dxc4 7.Bxc4 c5 8.O-O b6 9.a3 cxd4 10.axb4 dxc3 11.Qxd8 Rxd8 12.bxc3 Ne4 13.Bb2 Bb7 14.Be2 Nc6 15.Nd4 e5 16.Nxc6 Bxc6 17.Rfd1 a5 18.f3 Nd2 19.c4 e4 20.Kf2 Nb3 21.Rxd8+ Rxd8 22.Ra3 exf3 23.gxf3 Nd2 24.Bd4 axb4 25.Ra6 Rb8 26.Be5 Re8 27.Bf4 h6 28.e4 Nb3 29.Rxb6 Nd4 30.Bf1 Re6 31.Be3 Nc2 32.Bd3 Ba4 33.c5 b3 34.Bc1 Rc6 35.Rxc6 Bxc6 36.Bb2 Nb4 37.Bc4 Kf8 38.Ke3 Ba4 39.Kd4 Ke7 40.f4 h5 41.Bd5 Nc2+ 42.Kc3 Ne3 43.Kb4 Nd1 44.Ka3 Nxb2 45.Kxb2 h4 46.Bxb3 Be8 47.Kc3 f6 48.f5 g6 49.fxg6 Bxg6 50.Kd4 Bh5 51.Ke3 Bg4 52.Kf4 Bc8 53.Bd1 Bd7 54.Bg4 Bb5 55.Bf5 Be2 56.Ke3 Bd1 57.Kd4 Bb3 58.Ke3 Bd1 59.Kf4 Bh5 60.Bc8 Kd8 61.Bb7 Ke7 62.Kf5 Bf3 63.Bd5 Bg2 64.Kg4 h3 65.Kf5 Bf1 66.Bb3 Be2 67.Kf4 Kd7 68.Ba4+ Ke6 69.Be8 Ke7 70.Bg6 Kd7 71.Ke3 Bf1 72.Kd4 Kc6 73.Be8+ Kc7 74.Kd5 Bg2 75.Bg6 Kd7 76.Bf5+ Kc7 77.Ke6 Kc6 78.Kxf6 Kxc5 79.e5 Kd4 80.e6 Ke3 81.e7 Bc6 82.Bxh3 Kf4 83.Bf5 Be8 84.h4 {#r} 1-0