On Monday evening, my opponent blundered a piece at the Marshall Chess Club.
Round Five: Center Counter Defense
Jim West (FIDE 2112) - Juan Sena (FIDE 2140), Marshall Chess Club 5/14/2012
1.e4 d5 2.exd5 Qxd5 3.Nc3 Qd6 4.d4 a6 5.Nf3 Nf6 6.Be2 Nc6 7.O-O Bf5 8.Be3 e6 9.Qd2 O-O-O 10.a3 Ne4 11.Nxe4 Bxe4 12.Rad1 Be7 13.c3 Rhg8
14.Ng5 Bxg5 15.Bxg5 f6 16.Bf4 Qd5 17.f3 Bf5 18.Bd3 Nxd4 19.Be4 Bxe4 20.fxe4 Nf3+ 21.gxf3, Black resigns.