C41: Philidor Defence
1.e4 e5 2.Nf3 d6 3.Bc4 Bg4 4.Nc3 [ 4.h3 is a good choice here]
4...Nf6 5.0-0 Nc6 6.d3 Be7 7.h3 Bxf3 8.Qxf3 0-0 9.Kh2 [ 9.Ne2 Na5+/= ]
9...Nb4 [ 9...Nd4!? 10.Qd1 c6= ]
10.Bb3+/= Qd7 11.a3 Na6 12.g4 d5? [ >=12...Nc5= ]
13.exd5+/- Bd6 [ 13...Ne8 14.Bc4+/- ]
14.Ne4 [ 14.Kg2 Qd8+/- ]
14...Nxe4 15.dxe4 Nc5 16.Ba2 c6 17.Be3 cxd5 18.Bxd5 Ne6 19.Rad1 Nf4? [ 19...Nd4 20.Bxd4 exd4+ 21.Kg2+/- ]
20.Bb3?? [ >=20.Bxf4 exf4 21.e5 Bxe5 22.Bxb7+- ]
20...Ng6? [ >=20...Qc7+/- ]
21.Bc5!+- Nh4 22.Qg3 Qc6 [ 22...Ng6 23.Bxd6 Rfe8 24.f4 exf4 25.Bxf4+- ]
23.Bxd6 [ 23.Rxd6?! Qxc5 24.Rfd1 Ng6+- ]
23...Rfd8 [ 23...Ng6 24.Bxf8 Rxf8 25.Rd5+- ]
24.Bd5 Qxd6?! [ 24...Qe8 25.Bxb7 Ng6 26.Bxa8 Rxa8 27.c4+- ]
25.Bxf7+! Kxf7 26.Rxd6 Rxd6 27.Qxh4 Rd2 28.Qxh7 Rxc2 29.Qf5+ Kg8 30.Qxe5 Rcc8 31.Rd1 Re8 32.Qd5+ Kh8 33.Qf7 Rf8 34.Qh5+ Kg8 35.Kg3 Rae8 36.Rd7 b5 37.Qg6 [ 37.Qg6 Rf3+ 38.Kxf3 Rf8+ 39.Ke3 Rf3+ 40.Kxf3 Kh8 41.Qxg7# ] 1-0