[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1964.??.??"]
[Round "?"]
[White "Portisch, Lajos"]
[Black "Donner, Jan Hein"]
[Result "1-0"]
[WhiteElo ""]
[BlackElo ""]
[ECO "E54"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Nf3 O-O 6.Bd3 d5 7.O-O dxc4 8.Bxc4 b6
9.a3 cxd4 10.axb4 dxc3 11.Qxd8 Rxd8 12.bxc3 Bb7 13.Be2 Nc6 14.Bb2 a5 15.b5 Nb8
16.Rfd1 Nbd7 17.c4 Nc5 18.Ne5 Nfe4 19.f3 Nd2 20.Nc6 Rd7 21.Nd4 e5 22.Rxd2 exd4
23.Rxd4 Re7 24.Ra3 Re6 25.Kf2 f6 26.Rd1 Rc8 27.Bd4 Rc7 28.Bxc5 Rxc5 29.Rad3 Bc8
30.Rd5 Rc7 31.c5 bxc5 32.Rd8+ Kf7 33.Bc4 Ke7 34.Bxe6 Bxe6 35.Ra8 Rb7 36.Rxa5 Bb3
37.Rda1 Kd6 38.Ke1 Kd5 39.Rc1 c4 40.Kd2 Kc5 41.Kc3 Rd7 42.b6+ Kxb6 43.Rca1 Rd3+
44.Kb4 Rxe3 45.Ra7 Kc6 46.Rxg7  1-0

