I should have played 13...Qd6 because, after 13...Kxh8? 14.d5 Nb4, White missed a win by 15.d6!. On 21.Bxf6+, I missed 21...Rxf6 22.Rxf6 Qxc4, winning. Instead my 21...Bxf6? 22.Rxf6 Nxa2+ 23.Kb1 Bxc2+ should have lost to 24.Ka1 Bxd1 25.d6!.
Round Five: Philidor Counter Gambit
Kevin Chen (USCF 1711) - Jim West (USCF 2234), Somerset NJ 5/4/2008
1.e4 e5 2.Nf3 d6 3.d4 f5 4.Nc3 fxe4 5.Nxe4 d5 6.Nxe5 dxe4 7.Qh5+ g6 8.Nxg6 Nf6 9.Qe5+ Kf7 10.Nxh8+ Kg7 11.Bg5 Nc6 12.Qf4 Be7 13.O-O-O Kh8 14.d5 Nb4
15.Bc4 Qd6 16.Qh4 Bf5 17.g4 Bg6 18.f4 exf3 19.Rhe1 Rf8 20.Re6 Qc5 21.Bxf6+ Bxf6 22.Rxf6 Nxa2+ 23.Kb1 Bxc2+
24.Kxc2 Qxc4+ 25.Kb1 Nc3+ 26.bxc3 Qb3+ 27.Kc1 Qxc3+, White resigns.