[Event "It (open)"] [Site "masterchessopen.com Philadelphia (USA)"] [Round "0"] [White "Ivanov Alexander (USA)"] [Black "Katrein Matthew"] [Result "1-0"] [WhiteElo "2523"] [ECO "C05"] [Opening "French: Tarrasch, Closed, 4.e5"] 1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.c3 c5 6.f4 Nc6 7.Ngf3 Be7 8.Bd3 O-O 9.h4 f6 10.Bxh7+ Kxh7 11.Ng5+ fxg5 12.hxg5+ Kg8 13.Qh5 Rf5 14.g4 Ndxe5 15.dxe5 {#r} 1-0