[Event "IBM"]
[Site "Amsterdam"]
[Date "1976.??.??"]
[Round "10"]
[White "Sigurjonsson, Gudmundur"]
[Black "Ivkov, Borislav"]
[Result "1-0"]
[WhiteElo "2530"]
[BlackElo "2520"]
[ECO "C79"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.O-O Bd7 6.d4 Nf6 7.Bxc6 Bxc6 8.Re1 Be7
9.Nc3 exd4 10.Nxd4 Bd7 11.h3 O-O 12.Qf3 Re8 13.Bf4 Qc8 14.Rad1 b5 15.Re3 b4
16.Nce2 a5 17.Ng3 Bf8 18.Ndf5 Bxf5 19.exf5 h6 20.Rde1 Qd7 21.Nh5 Nxh5 22.Qxh5 Qb5
23.Qg4 Rxe3 24.Rxe3 Qc4 25.b3 Qd4 26.Kh2 a4 27.Qf3 axb3 28.axb3 Ra5 29.Bg3 Qd5
30.Qg4 Qxf5 31.Qxb4 Qb5 32.Qc3 Ra8 33.Qxc7 Qc5 34.Qb7 Qc8 35.Qd5 Ra6 36.b4 Rc6
37.Rf3 Rc7 38.b5 Qb7 39.Qxb7 Rxb7 40.Rb3 d5 41.b6 Bc5 42.Rb5 Bxb6 43.Bd6 f5
44.Kh1 h5 45.g3 g6 46.Kg2 Kf7 47.Bc5 Bxc5 48.Rxb7+ Ke6 49.Rg7 Kf6 50.Rc7 Bd6
51.Rc6 Ke5 52.Kf3 g5 53.Ke3 g4 54.h4 Bf8 55.Kd3 Bd6 56.Rc8 f4 57.Rh8 fxg3
58.fxg3 Ke6 59.Rh6+ Ke7 60.Rxh5 Bxg3 61.Rxd5 Bxh4 62.Rd4 Bf2 63.Rxg4 Kd6
64.Kc4 Be3 65.Rg6+ Kc7 66.Kb5 Bd4 67.Rh6 Kb7 68.Rh7+ Kb8 69.c4 Be5 70.Kc6 Bd4
71.Rb7+ Kc8 72.Rd7 Bc3 73.Rd3 Bb4  1-0

