[Event "San Sebastian Mendez Memorial op-B 1st"] [Site "San Sebastian del Pepino"] [Date "2014.??.??"] [Round "4"] [White "Rivera Rivera, Roberto I"] [Black "Pereira Velazquez, Wilfredo"] [Result "1-0"] [WhiteElo "1541"] [BlackElo "0"] [ECO "C50"] [PlyCount "117"] 1.e4 e5 2.Nf3 Nc6 3.Bc4 Be7 4.c3 Na5 5.Bb3 c6 6.Ba4 d6 7.d4 b5 8.Bc2 Nf6 9.dxe5 dxe5 10.Qxd8+ Bxd8 11.Nxe5 O-O 12.Nd2 Bc7 13.Nef3 Bb7 14.O-O c5 15.Re1 c4 16.b3 Rad8 17.Nf1 Rfe8 18.Bg5 Rd6 19.e5 Rde6 20.exf6 Bxf3 21.Rxe6 Rxe6 22.gxf3 gxf6 23.Be3 a6 24.Re1 Nc6 25.Bd2 Ne5 26.f4 Nf3+ 27.Kg2 Nxe1+ 28.Bxe1 Rxe1 29.bxc4 bxc4 30.Ne3 Bxf4 31.Nxc4 Be5 32.Nxe5 fxe5 33.Bb3 Kg7 34.Kf3 f6 35.c4 a5 36.Kg4 h6 37.Kf5 Rc1 38.Ke6 a4 39.Bxa4 Rxc4 40.Bb3 Rb4 41.Kd5 Rd4+ 42.Kc5 Rd2 43.a4 Rd8 44.Bd5 Rb8 45.a5 Rb1 46.a6 Ra1 47.Kb6 Kg6 48.a7 Kf5 49.a8=Q Rxa8 50.Bxa8 Kg5 51.Kc5 Kf4 52.Kd6 e4 53.Ke6 h5 54.Kxf6 h4 55.Bd5 e3 56.fxe3+ Kxe3 57.Kf5 Kf2 58.Kg4 Kg1 59.h3 1-0