[Event "IBM"]
[Site "Amsterdam"]
[Date "1968.??.??"]
[Round "1"]
[White "Ivkov, Borislav"]
[Black "Zuidema, Coenraad"]
[Result "1-0"]
[WhiteElo ""]
[BlackElo ""]
[ECO "A22"]

1.c4 Nf6 2.Nc3 e5 3.g3 Bb4 4.Bg2 O-O 5.d3 Re8 6.Bd2 c6 7.Nf3 h6 8.O-O Bf8
9.e4 d6 10.d4 Bg4 11.d5 cxd5 12.cxd5 b5 13.Re1 a6 14.h3 Bxf3 15.Qxf3 Nbd7
16.Bf1 Qb8 17.b4 Rc8 18.a4 bxa4 19.Rxa4 Nb6 20.Rxa6 Nc4 21.Bxc4 Rxc4 22.b5 Rxa6
23.bxa6  1-0

