[Event "IBM"]
[Site "Amsterdam"]
[Date "1974.??.??"]
[Round "4"]
[White "Langeweg, Kick"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[WhiteElo "2390"]
[BlackElo "2530"]
[ECO "D34"]

1.c4 c5 2.Nf3 Nf6 3.Nc3 e6 4.g3 d5 5.cxd5 exd5 6.d4 Nc6 7.Bg2 Be7 8.O-O O-O
9.Bg5 cxd4 10.Nxd4 h6 11.Be3 Re8 12.Rc1 Bf8 13.Nb3 Be6 14.Bc5 Bxc5 15.Nxc5 Qe7
16.Nb3 Rad8 17.Nd4 Qb4 18.Nxe6 Rxe6 19.Rc2 d4 20.Nb1 Ne5 21.Na3 d3 22.exd3 Nxd3
23.Nc4 Ree8 24.a3 Qb5 25.Qb1 Ng4 26.h3 Ngxf2 27.Kh2 Ne4 28.Qa2 Qg5 29.Bxe4 Rxe4
30.Rxf7 Kh8 31.Nd6 Rxd6 32.Rf8+ Kh7 33.Qg8+ Kg6  1/2-1/2

