[Event "18th olm qual. group 4"]
[Site "Lugano SUI"]
[Date "1968.10.20"]
[Round "3"]
[White "Portisch, Lajos HUN"]
[Black "Boey, Josef Martin BEL"]
[Result "1-0"]
[ECO "B06"]
[EventDate "1968.10.17"]
[PlyCount "77"]

1.d4 g6 2.e4 Bg7 3.c3 d6 4.f4 c6 5.Nf3 d5 6.e5 Bg4 7.Nbd2 h5 8.h3 Bxf3 9.
Nxf3 e6 10.Be3 Nd7 11.Bd3 Nh6 12.Bf2 Nf5 13.g3 Bf8 14.Kf1 Be7 15.Kg2 Qc7 
16.Qe2 O-O-O 17.b3 Rdg8 18.c4 Kb8 19.g4 Nh6 20.g5 Nf5 21.Rhc1 Qb6 22.a4 
Rc8 23.c5 Qd8 24.b4 Ka8 25.b5 Nb8 26.Rcb1 Qd7 27.Rb3 Bd8 28.Be1 Re8 29.a5 
cxb5 30.Bxb5 Nc6 31.a6 b6 32.Bf2 Nfe7 33.Rc1 Bc7 34.Qa2 Rb8 35.Qa4 Rec8 
36.Rbc3 Bd8 37.Ne1 bxc5 38.Rxc5 Rb6 39.Nd3 1-0

