[Event "Hoogovens"]
[Site "Wijk aan Zee NED"]
[Date "1968.01.10"]
[EventDate "1968.01.10"]
[Round "1"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Lajos Portisch"]
[ECO "E41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "67"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 O-O 6.Nf3 b6 7.d5 Bb7
8.e4 b5 9.e5 bxc4 10.Bb1 Nxd5 11.Bxh7+ Kxh7 12.Ng5+ Kg8 13.Qh5
Qxg5 14.Bxg5 Nxc3 15.a3 Ne4 16.axb4 Nc6 17.Be3 Nxb4 18.O-O Nc2
19.Rac1 Nxe3 20.fxe3 Bd5 21.Rf4 f5 22.exf6 Rxf6 23.Rcf1 Raf8
24.Rxf6 Nxf6 25.Qe5 Ne4 26.Rxf8+ Kxf8 27.Qb8+ Kf7 28.Qxa7 Bc6
29.h4 Kg6 30.g4 Kh6 31.Qb8 Kh7 32.Qf8 Nf6 33.g5 Ne4 34.Qf7 1-0