[Event "?"] [Site "masterchessopen.com – corr."] [Round "0"] [White "Osterman Erkki"] [Black "Koskinen Erkki (FIN)"] [Result "0-1"] [BlackElo "1952"] [ECO "D32"] [Opening "QGD Tarrasch: 4.cxd5 exd5"] 1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.dxc5 Nf6 6.Bg5 Bxc5 7.e3 d4 8.exd4 Bxd4 9.Bb5+ Nc6 10.Nge2 Bxf2+ 11.Kxf2 Ng4+ 12.Ke1 Qxg5 13.Qd5 Qxd5 14.Nxd5 O-O 15.Bxc6 bxc6 16.Ne7+ Kh8 17.Nxc6 Re8 18.Nd4 Ba6 19.Rd1 Rac8 20.Rd2 Rc1+ {#R} 0-1