[Event "Tournament (qual)"] [Site "masterchessopen.com Guatemala City (Guatemala)"] [Round "0"] [White "Mendoza V Oscar E"] [Black "Perez S Juan Francisco"] [Result "0-1"] [ECO "B90"] [Opening "Sicilian: Najdorf"] 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qb6 8.Qd2 Qxb2 9.Rb1 Qa3 10.Bd3 Be7 11.O-O O-O 12.Rf3 Qc5 13.Qf2 Ng4 14.Na4 Nxf2 15.Nxc5 Bxg5 16.Nxb7 Bxb7 17.Rxb7 Nxd3 18.cxd3 Bf6 19.Nb3 Nc6 20.g4 Nd4 {#R} 0-1