[Event "La Habana olm prel"]
[Site "La Habana"]
[Date "1966.??.??"]
[Round "5"]
[White "Portisch, Lajos"]
[Black "Boey, Josef"]
[Result "1-0"]
[WhiteElo ""]
[BlackElo ""]
[ECO "E84"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6 7.Nge2 a6 8.Qd2 Rb8
9.Rd1 Bd7 10.Nc1 e5 11.d5 Nd4 12.N1e2 Nxe2 13.Bxe2 Nh5 14.g3 f5 15.Bf2 Nf6
16.O-O f4 17.Rfe1 h5 18.gxf4 Bh6 19.Be3 exf4 20.Bd4 Nh7 21.Kh1 Ng5 22.e5 dxe5
23.Bxe5 Nh3 24.Bd3 g5 25.Bf1 Bg7 26.Bxg7 Kxg7 27.Ne4 Kh6 28.Nc5 Rf6 29.Ne6 Bxe6
30.dxe6 Qxd2 31.Rxd2  1-0

