[Event "Geneve"]
[Site "Geneve"]
[Date "1977.??.??"]
[Round "4"]
[White "Olafsson, Fridrik"]
[Black "Hug, Werner"]
[Result "1-0"]
[WhiteElo "2560"]
[BlackElo "2445"]
[ECO "B38"]

1.c4 Nf6 2.Nc3 g6 3.d4 Bg7 4.e4 d6 5.h3 O-O 6.Nf3 c5 7.Be2 cxd4 8.Nxd4 Nc6
9.Be3 Nxd4 10.Bxd4 Qa5 11.O-O Be6 12.Re1 Rfe8 13.Bf1 Nd7 14.Bxg7 Kxg7 15.Nd5 Bxd5
16.exd5 Qc5 17.Qd2 a5 18.b3 Nf6 19.a3 b6 20.Qb2 Kg8 21.Rad1 Qc7 22.Re3 Rac8
23.Be2 Qd7 24.Qd4 Qc7 25.h4 h5 26.a4 Qc5 27.Qf4 Kg7 28.g4 hxg4 29.Bxg4 Nxg4
30.Qxg4 Rh8 31.Rxe7 Rce8 32.Rde1 Rxe7 33.Rxe7 Rh5 34.Qf4 Rf5 35.Qe3 Qxe3
36.fxe3 Rh5 37.Rd7 Rxh4 38.Rxd6 Rh3 39.Kf2 Kh6 40.Rxb6  1-0

