Crushing the Philidor Defense in 8 moves

Here's a recent game of me getting completely smashed playing the Philidor!

1.e4 d6 2.d4 Nf6 3.Nc3 e5 4.Nf3 Nbd7 5.g4 Nxg4 6.Rg1 Ngf6 7.Bc4 h6 8.Be3 c6 9.dxe5 dxe5 10.Qd3 Nh5? { I try to play not using books, databases etc. in my turn based games to force me to remember some theory, clearly I messed up my lines here, ..b5 is the move had I did such research, } 11.O-O-O Qf6? 12.Nb5! { Completely not expecting this, the rest goes downhill quickly } 12...cxb5 13.Bxb5 Qd8 14.Nxe5 Nhf6 15.Nxf7 Kxf7 16.e5 Qa5 17.exf6 Ne5 18.Bc4+ Kxf6 19.Qe4 Bf5 20.Qh4+ 

1-0

If g5...  Bxg5+ hxg5 Qxb5#

Tactics trainer time!  :D...  I guess you didn't see this.  g5 is forced because black is in a mating net.  I don't know if you where trying to say you creamed your opponent or you thought you where losing at this point, but clearly you where winning with a forced mate.  This is an interesting opening that I might try someday.  The open file for the rook really helped there.

I know the philidor is a tough opening to learn because of all the opening traps you have to look out for when playing it, but I would like to say that the OP's post, for me, is a little enlightening.  I normally try for a Legal mate type attacking chance by developing both knights and my bishop to c4 before I do the d4 pawn push, but often times my opponent doesn't blunder like that.  I know this new way only works if the opponent does a bad move, but at least this is something different.  I now I have two more openings to study, because I encounter the philidor a lot.  I have a book on it, however, it is from the black perspective.  I'm not interested in playing the Philidor at this time as black but someday I will dust the cobwebs from that book and look it over.  It's a pretty big book to, only on one opening!  

In short, good post, this gives me something else to try, but the philidor is actually a good opening for black, if you are aware of the traps and now the contents of the book I have...

how to I move when Phildor Defense 6... Qf6

In an open position, Black can not ignore opening principles with 3 .....B-g4. He is just asking to be punished. If you don't think that's a blunder, I don't know what to tell you.

As far as Philidor being passive, I suggest people look at 3......f5, the Philidor Counter Gambit. In New Jersey, USA, Life Master James R West ( he's also on chess.com ) has won hundreds of games with it and published a book on it 20 years ago.

West also has a daily chess blog http://jimwestonchess.blogspot.com/