[Event "Ch American Continental"] [Site "masterchessopen.com – Mar del Plata (Argentina)"] [Date "2012.10.12"] [Round "1"] [White "Elias Roberto (ARG)"] [Black "De Paiva Pedro Henrique (BRA)"] [Result "1-0"] [WhiteElo "1885"] [BlackElo "2289"] [ECO "D81"] [Opening "Gruenfeld: Early Russian Variation"] 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Qb3 dxc4 5.Qxc4 Be6 6.Qa4+ c6 7.Nf3 Bg7 8.e4 O-O 9.Be2 a5 10.a3 b5 11.Qc2 a4 12.Bf4 Nbd7 13.O-O Bb3 14.Qd2 Qb6 15.Bd1 Bc4 16.Re1 Rfd8 17.Be2 Bb3 18.Bd1 Bc4 19.Be2 Bb3 20.Bd3 Be6 21.Ng5 Nf8 22.Be3 Bc4 23.Be2 Bb3 24.Bd1 Bxd1 25.Qxd1 Qa5 26.Qd2 h6 27.Nf3 c5 28.Qd3 b4 29.Nb5 {#r} 1-0