[Event "Chicago (simul)"] [Site "masterchessopen.com"] [Round "0"] [White "Fischer, RJ."] [Black "Rouse, T."] [Result "1-0"] [ECO "C57"] [Opening "Two Knights: 4.Ng5"] 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 { White threatens the f7-pawn so Black takes evasive action. } 5.exd5 Nxd5 { This has been played numerous times but it is a serious error which allows White to stir up tactical tricks. } ( { The main alternative goes } 5...Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Be2 { with roughly equal chances. } ) {#r} 1-0