Jim West Talks Chess: PCG with 4.Nc3 and 6.Neg5

A critical variation in the Philidor Counter Gambit occurs after 1.e4 e5 2.Nf3 d6 3.d4 f5 4.Nc3 fxe4 5.Nxe4 d5 6.Neg5.  Black is in trouble after 6...h6 7.Nf7 Kxf7 8.Nxe5+ or 6...e4 7.Ne5 Nh6 8.Nxe4.  So it looks like Black must play 6...exd4, as in the following games.