[Event "18th olm qual. group 4"]
[Site "Lugano SUI"]
[Date "1968.10.22"]
[Round "5"]
[White "Silva, Raul PAR"]
[Black "O'Kelly de Galway, Alberic BEL"]
[Result "0-1"]
[ECO "B90"]
[EventDate "1968.10.17"]
[PlyCount "54"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f3 e5 7.Nb3 Be6 8.Bg5 
Nbd7 9.Qd2 Be7 10.O-O-O b5 11.h4 Rc8 12.Kb1 h6 13.Be3 Nb6 14.g4 Nfd7 15.
Be2 Qc7 16.Rc1 Nc4 17.Bxc4 bxc4 18.Na1 Rb8 19.Nd5 Bxd5 20.Qxd5 Nf6 21.Qd1 
c3 22.b3 d5 23.g5 Qa5 24.Qd3 d4 25.Rcd1 Nh5 26.g6 O-O 27.Bc1 Ba3 0-1

