[Event "Lugano"]
[Site "Lugano"]
[Date "1970.??.??"]
[Round "4"]
[White "Donner, Jan Hein"]
[Black "Unzicker, Wolfgang"]
[Result "0-1"]
[WhiteElo ""]
[BlackElo ""]
[ECO "E59"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O Nc6 8.a3 Bxc3
9.bxc3 dxc4 10.Bxc4 Qc7 11.Bd3 e5 12.Qc2 Re8 13.dxe5 Nxe5 14.Nxe5 Qxe5 15.f3 Be6
16.Re1 Rad8 17.Bf1 Nd5 18.Bd2 Nb6 19.Rad1 Bc4 20.e4 Qe6 21.Bxc4 Qxc4 22.Bc1 Na4
23.Re3 b5 24.Red3 Rxd3 25.Rxd3 f5 26.Qd2 fxe4 27.Rd8 Qe6 28.Rxe8+ Qxe8 29.fxe4 Qxe4
30.Qd8+ Kf7 31.Qd7+ Qe7 32.Qxb5 Qe1+ 33.Qf1+ Qxf1+ 34.Kxf1 Nxc3 35.Bb2 Na4
36.Be5 g6 37.Ke2 Ke6 38.Bb8 a6 39.Kd3 Kd5 40.Bf4 Nb6 41.Bc1 Nc4 42.Kc3 a5
43.Kd3 a4 44.h3 h5 45.Kc3 Nd6 46.Kd3 Nb5 47.g4 hxg4 48.hxg4 Nd6 49.Ke3 Ne4
50.Bb2 Ng5 51.Bc1 Ne6 52.Kd3 Nd4 53.Be3 Nf3 54.g5 Ne5+ 55.Kc3 Nc4 56.Bc1 Nd6
57.Kd3 Nb5 58.Bb2 Nd4 59.Kc3 Nb5+ 60.Kd3 c4+ 61.Kc2 Kc5 62.Kd2 c3+ 63.Bxc3 Kc4  0-1

