[Event "Ch Brazil (juniors) (under 16)"] [Site "masterchessopen.com Foz do Iguacu (Brazil)"] [Date "2011.06.12"] [Round "6"] [White "Mendonca Mateus"] [Black "Cha Joao Pedro"] [Result "1-0"] [WhiteElo "2147"] [ECO "B90"] [Opening "Sicilian: Najdorf"] 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 e6 7.Bb3 b5 8.O-O Be7 9.Qf3 Qb6 10.Be3 Qb7 11.a3 Nc6 12.Qg3 Ne5 13.f3 h6 14.f4 Nc4 15.Bxc4 bxc4 16.e5 Nh5 17.Qg4 g6 18.exd6 Bxd6 19.Qe2 Qxb2 20.Ne4 Bxf4 21.Rfb1 {#r} 1-0