[Event "18th olm qual. group 1"]
[Site "Lugano SUI"]
[Date "1968.10.23"]
[Round "6"]
[White "Petrosian, Tigran URS"]
[Black "Kottnauer, Cenek ENG"]
[Result "1-0"]
[ECO "E92"]
[EventDate "1968.10.17"]
[PlyCount "81"]

1.c4 Nf6 2.Nf3 g6 3.Nc3 Bg7 4.e4 d6 5.d4 O-O 6.Be2 e5 7.d5 a5 8.Bg5 h6 9.
Bh4 Na6 10.O-O Qe8 11.Nd2 Nh7 12.a3 h5 13.f3 Bh6 14.b4 Bd7 15.Rb1 Be3+ 16.
Kh1 f5 17.exf5 gxf5 18.Qe1 Qg6 19.Bf2 Qh6 20.Bxe3 Qxe3 21.Nb5 axb4 22.Rb3 
Qh6 23.axb4 Rae8 24.Nc3 Nf6 25.c5 dxc5 26.Bxa6 bxa6 27.bxc5 Bb5 28.Nxb5 
axb5 29.d6 cxd6 30.cxd6 Rb8 31.Re3 Nd7 32.f4 e4 33.Rg3+ Kh8 34.Rg5 Nf6 35.
Rxf5 Qh7 36.Re5 Rfe8 37.Qa1 Rxe5 38.fxe5 Ng4 39.e6+ Qg7 40.Nxe4 b4 41.e7 
1-0

