[Event "Ch World (juniors) (under 20) (g)"] [Site "Yerevan (Armenia)"] [Round "8"] [White "Aydin Helin"] [Black "Ornstein Petra (SWE)"] [Result "0-1"] [BlackElo "2021"] [ECO "B09"] [Opening "Pirc: Austrian, 5...O-O"] 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.O-O e5 8.dxe5 dxe5 9.fxe5 Ng4 10.Bg5 Qd7 11.Nd5 Ncxe5 12.Nxe5 Bxe5 13.Nf6+ Nxf6 14.Bxf6 Qd4+ {#R} 0-1