[Event "18th olm qual. group 1"]
[Site "Lugano SUI"]
[Date "1968.10.18"]
[Round "1"]
[White "Petrosian, Tigran URS"]
[Black "Castro Aguilar, Morelos MEX"]
[Result "1-0"]
[ECO "E73"]
[EventDate "1968.10.17"]
[PlyCount "47"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 c6 6.f4 h5 7.Nf3 Bg4 8.Ng5 Qc7 9.
e5 Bxe2 10.Qxe2 Nh7 11.Nxh7 Rxh7 12.Ne4 d5 13.Ng5 Rh8 14.f5 gxf5 15.e6 f6 
16.Nf7 Rh7 17.O-O dxc4 18.Rxf5 Qb6 19.Be3 c5 20.d5 Nd7 21.Rxh5 Rxh5 22.
Qxh5 Qxb2 23.Nd6+ Kd8 24.Qe8+ 1-0

