[Event "2. USA Congress"] [Site "Cleveland, OH USA"] [Date "1871.??.??"] [Round "2"] [White "Mackenzie, George H"] [Black "Johnston, A"] [Result "1-0"] [ECO "C25a"] 1.e4 e5 2.Nc3 f6 3.f4 exf4 4.Bc4 Ne7 5.d4 Ng6 6.Nge2 f3 7.gxf3 d6 8.O-O Nc6 9.f4 Bh3 10.Rf2 Na5 11.Qd3 Nxc4 12.Qxc4 Qd7 13.f5 Ne7 14.Nf4 Bg4 15. Ne6 c6 16.Bf4 g5 17.Be3 d5 18.Qd3 Bh5 19.exd5 cxd5 20.Re1 h6 21.Bd2 Kf7 22.Qh3 Bg6 23.fxg6+ 1-0