[Event "Oberliga NRW 2003/04"] [Site "masterchessopen.com Germany"] [Date "2003.09.28"] [Round "1"] [White "Sonntag Hans-Hubert (GER)"] [Black "Bischof Detlef (GER)"] [Result "1/2-1/2"] [WhiteElo "2389"] [BlackElo "2262"] [ECO "A13"] [Opening "English: 1...e6 2.Nc3 d5"] 1.c4 e6 2.Nc3 d5 3.d4 Nf6 4.Bg5 c5 5.cxd5 cxd4 6.Qa4+ Qd7 7.Qxd4 Nc6 8.Qd2 Nxd5 9.a3 h6 10.Bh4 Nxc3 11.Qxc3 Qd4 12.Qxd4 Nxd4 13.O-O-O Nc6 14.e4 Bd7 15.Ne2 Rc8 16.Kb1 g5 17.Bg3 Bg7 18.f3 f5 19.exf5 exf5 20.Bf2 Be6 21.Nd4 Nxd4 22.Bxd4 Bxd4 23.Rxd4 Ke7 24.Be2 Rhd8 25.Rhd1 Rxd4 26.Rxd4 f4 27.g3 {#d} 1/2-1/2