[Event "Memorial Trebitsch"] [Site "masterchessopen.com – Vienna (Austria)"] [Round "8"] [White "Gruenfeld Ernst F (AUT)"] [Black "Lenner Leopold"] [Result "1-0"] [ECO "D25"] [Opening "QGA: 4.e3 c5"] 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 c5 5.Bxc4 e6 6.O-O a6 7.Qe2 Nc6 8.Nc3 b5 9.Bb3 Bb7 10.Rd1 b4 11.d5 exd5 12.Nxd5 Nxd5 13.Bxd5 Qc7 14.b3 Be7 15.Bb2 O-O 16.Qc4 Qc8 17.Qf4 Rb8 18.Qg3 g6 19.Bxc6 Qxc6 20.Qe5 {#r} 1-0