[Event "Ch OWL"] [Site "masterchessopen.com ? Detmold (Germany)"] [Round "11"] [White "Diekmann Hans-Joachim Dr (GER)"] [Black "Groenegres Wilfried (GER)"] [Result "1-0"] [WhiteElo "2175"] [BlackElo "2134"] [ECO "B28"] [Opening "Sicilian: O'Kelly, 3.d4 cxd4 4.Nxd4"] 1.e4 c5 2.Nf3 a6 3.d4 cxd4 4.Nxd4 Nf6 5.Nd2 d6 6.Bd3 g6 7.O-O Bg7 8.N2b3 Nc6 9.h3 O-O 10.Be3 Be6 11.c4 Rc8 12.Rc1 Ne5 13.f4 Bxc4 14.fxe5 dxe5 15.Rxc4 Rxc4 16.Bxc4 exd4 17.Bxd4 Nxe4 18.Bxg7 Qxd1 19.Rxd1 Kxg7 20.Rd7 {#r} 1-0