[Event "Cup Mitropa"] [Site "masterchessopen.com Vienna (Austria)"] [Round "5"] [White "Van Lennep"] [Black "Gruenfeld Ernst F (AUT)"] [Result "0-1"] [ECO "E02"] [Opening "Catalan: Open, 5.Qa4+"] 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4 c5 7.dxc5 Bxc5 8.Nf3 a6 9.O-O b5 10.Qc2 Bb7 11.a3 Rc8 12.Qd1 O-O 13.b4 Be7 14.Nbd2 Nb6 15.Bb2 Bd5 16.Rc1 Na4 17.Rxc8 Qxc8 18.Qa1 Qc2 19.Be5 Rc8 20.Re1 Nc3 21.Bf1 Nd7 22.Bd4 Bf6 23.Bxf6 Nxf6 24.Nb1 h6 25.Nd4 Qe4 26.Nf3 Na4 27.Bg2 Rc2 28.Nh4 Rxe2 29.Rf1 Qc4 30.Nf3 Qc7 31.Qd4 Re4 32.Qd2 Rc4 33.Re1 Rc2 34.Qd4 Qb7 35.Qd1 Rc8 36.Nh4 Bxg2 37.Nxg2 Qd5 38.Qe2 Qc4 39.Qe5 Qc7 40.Qe2 Nd5 41.Ne3 Nxe3 42.Qxe3 Nb6 43.Qf3 Nd5 44.Rd1 Qc2 45.Re1 Rc4 46.Kg2 Qb2 47.Rd1 Qc2 48.Re1 Rd4 49.h3 Qd3 50.Qh5 Re4 51.Rc1 Rc4 52.Re1 Rc2 53.Qe5 Kh7 54.Qh5 Rb2 55.Qd1 Qxd1 56.Rxd1 Ne3+ {#R} 0-1