[Event "Ch Club (a)"] [Site "masterchessopen.com Giessen (Germany)"] [Date "2001.03.20"] [Round "1"] [White "Wiegand Helmut"] [Black "Schwierkott Udo"] [Result "1-0"] [ECO "D91"] [Opening "Gruenfeld: 5.Bg5"] 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bg5 O-O 6.Bxf6 Bxf6 7.Nxd5 Bg7 8.e3 c6 9.Nc3 Qb6 10.Rb1 Bg4 11.Be2 Qb4 12.a3 Qa5 13.O-O Nd7 14.Qc1 c5 15.b4 cxb4 16.axb4 Qc7 17.c5 Rac8 18.h3 Bxf3 19.Bxf3 a6 20.b5 axb5 21.Rxb5 b6 22.Nd5 Qd8 23.c6 e6 24.c7 Qg5 25.e4 Qxc1 26.Ne7+ Kh8 27.Rxc1 Bxd4 28.Rd1 {#r} 1-0