[Event "It (open)"] [Site "masterchessopen.com – Haarlem (Netherlands)"] [Round "6"] [White "Heltzel Joost (NED)"] [Black "Pijpers Peter"] [Result "1-0"] [WhiteElo "2078"] [ECO "D92"] [Opening "Gruenfeld: 5.Bf4 O-O"] 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bf4 O-O 6.cxd5 Nxd5 7.Nxd5 Qxd5 8.Bxc7 Bg4 9.e3 Nc6 10.Be2 Rac8 11.Bg3 Qa5+ 12.Qd2 Qxd2+ 13.Nxd2 Bxe2 14.Kxe2 e5 15.dxe5 Nxe5 16.Rac1 Nc6 17.b3 Rfd8 18.Rhd1 Bb2 19.Rb1 Bg7 20.a3 a5 21.Nc4 Bf8 22.a4 Bb4 23.Bh4 Re8 24.Rd7 Re6 25.Bg3 h5 26.Rxb7 g5 27.Rd1 h4 28.Bd6 Bc3 29.Rd5 Bf6 30.Kf1 Kg7 31.Rc7 Rb8 32.Rxc6 Rxb3 33.Nxa5 Rb1+ 34.Ke2 Rb2+ 35.Rd2 {#r} 1-0