[Event "Siegen Olympiad qual-1"]
[Site "Siegen FRG"]
[Date "1970.09.08"]
[EventDate "1970.09.05"]
[Round "4"]
[Result "0-1"]
[White "Thorstein Vilhelm"]
[Black "Lev Polugaevsky"]
[ECO "A15"]
[WhiteElo "?"]
[BlackElo "?"]
[Source "Olimpbase"]
[PlyCount "68"]

1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d6 6.d3 e5 7.Nc3 c6
8.Bg5 h6 9. Bd2 Nbd7 10.Qc2 Qe7 11.Rae1 d5 12.cxd5 cxd5 13.e4
d4 14.Nb5 Nb6 15.a3 a5 16.Qc7 Nbd7 17.Bh3 b6 18.Rc1 Ba6 19.Na7
Qd8 20.Qxd8 Rfxd8 21.Nc6 Re8 22. Ne1 Nc5 23.Rxc5 bxc5 24.Nxa5
c4 25.f4 cxd3 26.Bg2 Ng4 27.Rf3 Ne3 28.Nc6 exf4 29.gxf4 Nxg2
30.Kxg2 Bb7 31.Nxd4 Rxe4 32.Kg3 Rxe1 33.Bxe1 Bxf3 34. Kxf3 Re8
0-1