[Event "corr."] [Site "masterchessopen.com DDR"] [Round "0"] [White "Piontek H"] [Black "Keskowski Thilo (GER)"] [Result "1-0"] [BlackElo "2127"] [ECO "D41"] [Opening "QGD: Semi-Tarrasch, 5.cxd5"] 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.e3 Nc6 7.Bd3 cxd4 8.exd4 Be7 9.O-O O-O 10.Re1 Nf6 11.a3 b6 12.Bc2 Bb7 13.Qd3 g6 14.Bh6 Re8 15.Rad1 Rc8 16.Ba4 Nd5 17.Ne4 Bf8 18.Bg5 Be7 19.Rc1 Bxg5 20.Nexg5 h6 21.Nxf7 {#r} 1-0