[Event "Reykjavik Open"] [Site "Reykjavik ISL"] [Date "2011.03.10"] [Round "2.75"] [White "Willem Hajenius"] [Black "Vignir Vatnar Stefansson"] [Result "1-0"] [WhiteElo "2028"] [BlackElo "1501"] [ECO "D31"] [Opening "Semi-Slav: Marshall Gambit, 4...Bb4"] 1.d4 d5 2.c4 e6 3.Nc3 c6 4.e4 Bb4 5.e5 Bxc3+ 6.bxc3 Nd7 7.Nf3 Ne7 8.cxd5 cxd5 9.Bd3 O-O 10.Bxh7+ Kxh7 11.Ng5+ Kg8 12.Qh5 f6 13.Qh7# 1-0