[Event "18th olm qual. group 4"]
[Site "Lugano SUI"]
[Date "1968.10.24"]
[Round "7"]
[White "Heidenfeld, Wolfgang IRL"]
[Black "Donner, Jan NED"]
[Result "0-1"]
[ECO "C02"]
[EventDate "1968.10.17"]
[PlyCount "88"]

1.e4 c5 2.c3 e6 3.d4 d5 4.e5 Nc6 5.Nf3 Nge7 6.Be3 Nf5 7.Bd3 Nxe3 8.fxe3 
Be7 9.O-O O-O 10.Qc2 h6 11.Nbd2 Bd7 12.Rae1 Rc8 13.Qb1 b5 14.dxc5 Bxc5 15.
Nb3 Be7 16.Nbd4 b4 17.cxb4 Bxb4 18.Re2 Qb6 19.Qd1 Nxd4 20.exd4 Rc7 21.Rff2
Rfc8 22.Rc2 Be7 23.Rxc7 Rxc7 24.Rc2 f5 25.Rxc7 Qxc7 26.Qd2 g5 27.Ne1 Qb6 
28.Qf2 Bd8 29.Bb1 Bb5 30.h3 Qc6 31.Kh2 Qc1 32.Bd3 Ba5 33.b4 Bxb4 34.Nc2 
Bxd3 35.Nxb4 Bb5 36.a4 Bxa4 37.Qa2 Qd1 38.Nxd5 Qxd4 39.Nf6+ Kf7 40.Qe2 Bc6
41.Qh5+ Kg7 42.Ne8+ Bxe8 43.Qxe8 Qxe5+ 44.Kh1 Qf6 0-1

