[Event "IBM"]
[Site "Amsterdam"]
[Date "1969.??.??"]
[Round "10"]
[White "Ivkov, Borislav"]
[Black "Liberzon, Vladimir M"]
[Result "1/2-1/2"]
[WhiteElo ""]
[BlackElo ""]
[ECO "E69"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nbd7 7.O-O e5 8.e4 c6
9.h3 Qb6 10.Re1 Re8 11.d5 Nc5 12.Rb1 a5 13.Be3 Qc7 14.Nd2 Bd7 15.Bf1 Reb8
16.dxc6 Bxc6 17.Bg2 b6 18.b3 Qb7 19.Qc2 Rc8 20.a3 Ne6 21.Nd5 Nd4 22.Qd3 Nxd5  1/2-1/2

