[Event "Quebec op"]
[Site "Montreal CAN"]
[Date "2009.07.20"]
[Round "4"]
[White "Castellanos, Renier"]
[Black "Thorfinnsson, Bjorn"]
[Result "1-0"]
[WhiteElo "2453"]
[BlackElo "2395"]
[PlyCount "85"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.d4 Bg4 10.d5 Na5 11.Bc2 c6 12.h3 Bh5 13.dxc6 Qc7 14.Nbd2 Qxc6 15.Nf1 Rad8 16.Ng3 Bg6 17.a4 Nc4 18.b3 Nb6 19.axb5 axb5 20.Bd2 Nfd7 21.Qe2 Na8 22.Bd3 Nc7 23.c4 bxc4 24.Bxc4 Ra8 25.Ba5 Ra7 26.Rac1 Nc5 27.b4 N7e6 28.Qd2 Qa8 29.Bb6 Nxe4 30.Nxe4 Bxe4 31.Rxe4 Qxe4 32.Bxa7 Nf4 33.Be3 Nxh3+ 34.Kf1 Qf5 35.Be2 h6 36.gxh3 Qxh3+ 37.Kg1 f5 38.Qd5+ Kh8 39.Qe6 Rf6 40.Qxe7 Rg6+ 41.Bg5 hxg5 42.Rc8+ Kh7 43.Nxg5+ 1-0