[Event "It (open) \"] [Site "masterchessopen.com Copenhagen (Denmark)"] [Round "4"] [White "Sylvan Jacob (DEN)"] [Black "Petersen Steen (DEN)"] [Result "1-0"] [WhiteElo "2245"] [BlackElo "2140"] [ECO "E15"] [Opening "Queen's Indian: 4.g3 Bb7"] 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Qc2 Nxc3 9.Qxc3 c5 10.dxc5 bxc5 11.Rd1 d6 12.Qc2 Nc6 13.b3 Bf6 14.Bb2 Bxb2 15.Qxb2 Qe7 16.Rd2 Rfd8 17.Rad1 Rd7 18.e3 Rad8 19.Ne1 Na5 20.Bxb7 Rxb7 21.Qc2 Nc6 22.Qe4 Rc7 23.g4 h6 24.Nd3 g6 25.Nf4 Kg7 26.Kg2 f5 27.Qxe6 Qg5 28.h3 Ne5 29.Rxd6 fxg4 30.h4 Rxd6 31.hxg5 {#r} 1-0