[Event "FRG-ch International"]
[Site "Berlin-West"]
[Date "1971.??.??"]
[Round "?"]
[White "Unzicker, Wolfgang"]
[Black "Donner, Jan Hein"]
[Result "1/2-1/2"]
[WhiteElo ""]
[BlackElo ""]
[ECO "B92"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3 Qc7 8.O-O Be7
9.Be3 O-O 10.a4 Be6 11.a5 Nbd7 12.Nd5 Nxd5 13.exd5 Bf5 14.c4 Bg6 15.Nd2 f5
16.f3 Qd8 17.b4 Bg5 18.Qb3 Bxe3+ 19.Qxe3 Qe7 20.Bd3 Rae8 21.Rae1 Nf6 22.Bb1 Qd7
23.Qa3  1/2-1/2

