[Event "IBM"]
[Site "Amsterdam"]
[Date "1974.??.??"]
[Round "8"]
[White "Knaak, Rainer"]
[Black "Ribli, Zoltan"]
[Result "1/2-1/2"]
[WhiteElo "2515"]
[BlackElo "2525"]
[ECO "D87"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 c5 8.Ne2 O-O
9.O-O Nc6 10.Be3 Qc7 11.Rc1 Rd8 12.Bf4 Qd7 13.dxc5 Qe8 14.Bd5 Ne5 15.Qb3 e6
16.Bxb7 Bxb7 17.Qxb7 Nd3 18.Rcd1 Nxc5 19.Qb1 Qc6 20.f3 Na4 21.Be3 Rdc8 22.Rd3 Rab8
23.Qc1 Qa6 24.Qd2 Rb2 25.Qd1 Rxa2 26.Re1 Nb2 27.Rd8+ Bf8 28.Qd7 Rxd8 29.Qxd8 Nd3
30.Rd1 Rxe2 31.Bh6 Qb6+ 32.Qxb6 axb6 33.Bxf8 Kxf8 34.Rxd3 Ke7 35.Rd4 Rb2
36.e5 b5 37.Rd6 g5 38.Rb6 h5 39.Rb7+ Kf8 40.c4 b4 41.c5 Rc2 42.Rxb4 Rxc5
43.Re4 Kg7 44.h4 gxh4 45.Kh2 Kg6 46.Kh3 Rc2 47.Rxh4 Re2 48.Re4 Rxe4 49.fxe4 Kh6
50.Kh4 Kg6 51.g4  1/2-1/2

