National master William Freeman [pictured] e-mails this analysis of the Philidor Counter Gambit, in the 4.exf5 variation.
1.e4 e5 2.Nf3 d6 3.d4 f5 4.exf5 e4 5.Ng5 Nf6 6.f3!? h6!? 7.Ne6 Bxe6 8.fxe6 d5 9.Be2!
(9.fxe4 dxe4 10.Bc4, 1/2-1/2 in 44, Sarkar-West, Rahway 8/1/2010) Bd6 {9...Be7 10.fxe4 O-O 11.O-O Nxe4 [11...dxe4 12.c4±] 12.Nc3±; 9...Nh5 10.O-O Bd6 [10...e3 11.Bxe3 Bd6 12.c4 Qh4 13.f4 Nxf4 14.g3 Nxe2+ (14...Nh3+ 15.Kg2 Qe4+ 16.Kxh3 Qxe3 17.cxd5) 15.Qxe2 Bxg3 16.Nc3] 11.fxe4 Bxh2+ 12.Kxh2 Qh4+ 13.Kg1 Ng3 14.exd5; 9...Qd6; 9...c5; 9...Nc6} 10.fxe4 O-O 11.e5 Ne4 12.exd6 (12.Qd3 Nf2 13.Qg6 Qh4 14.g3 Qxd4 15.Rf1 Nc6 16.c3 Qxe5 17.Rxf2 Rxf2 18.Kxf2 Rf8+ 19.Ke1 Ne7 20.Qd3 Qxe6 21.Nd2 c5 22.Nf3 Nc6 23.Kd1 c4 24.Qe3 Qf7 25.Nd4 Bc5 26.Bd2±) Qh4+ 13.g3 Nxg3 14.hxg3 Qxh1+ 15.Kd2 Qg2 (15...Qe4 16.e7 Qxd4+ 17.Bd3 Re8 18.Nc3 cxd6 19.Qf3 Rxe7 20.Qxd5+ Qxd5 21.Nxd5±) 16.e7 Re8 17.Nc3 Nc6 18.Qf1 Qxg3 19.Nxd5 Qxd6 20.c3 Kh8 (20...Nxe7 21.Nxe7+ Qxe7 22.Bc4+ Kh8 23.Kc2 Rf8 24.Qg2 Rae8 25.Bd2 Qe4+ 26.Qxe4 Rxe4 27.Bd5±) 21.Qf5 Nxe7 22.Nxe7 Rxe7 23.Bd3 g6 24.Qf2 Kg8 (24...g5 25.Kc2 Kg8 26.Qg2 transposes) 25.Kc2 g5 26.Qg2 Rf8 27.Bd2 Qc6 28.d5±.
