[Event "British Columbia-op"]
[Site "Richmond CAN"]
[Date "2015.02.07"]
[Round "1.9"]
[White "Caluza, Severo (Juni)"]
[Black "Patterson, Roger"]
[Result "0-1"]
[WhiteElo "1756"]
[BlackElo "2106"]
[PlyCount "78"]

1.Nf3 f5 2.b3 d6 3.d4 Nf6 4.Nbd2 g6 5.e3 Bg7 6.Bd3 Nc6 7.Bb2 O-O 8.O-O e5 9.dxe5 Ng4 10.h3 Ngxe5 11.Nxe5 Nxe5 12.Nc4 Nxd3 13.Qxd3 Bxb2 14.Nxb2 Qf6 15.Na4 Be6 16.Nc3 Rad8 17.Rad1 c6 18.Qd4 Qxd4 19.Rxd4 Rd7 20.Rfd1 Rfd8 21.Ne2 Kg7 22.c4 Kf6 23.f4 c5 24.R4d2 d5 25.Nc3 dxc4 26.Rxd7 Rxd7 27.Rxd7 Bxd7 28.bxc4 Be6 29.e4 Bxc4 30.e5+ Ke6 31.a4 b6 32.Kf2 a6 33.Ke3 b5 34.a5 Kd7 35.g4 Kc6 36.Nb1 b4 37.Nd2 Be6 38.gxf5 Bxf5 39.h4 Kd5 0-1