[Event "IBM"]
[Site "Amsterdam"]
[Date "1971.??.??"]
[Round "15"]
[White "Ivkov, Borislav"]
[Black "Browne, Walter S"]
[Result "1-0"]
[WhiteElo "2560"]
[BlackElo "2500"]
[ECO "D75"]

1.d4 c5 2.Nf3 cxd4 3.Nxd4 d5 4.g3 Nf6 5.Bg2 g6 6.O-O Bg7 7.c4 O-O 8.cxd5 Nxd5
9.Nc3 Nxc3 10.bxc3 Qa5 11.Qb3 Nc6 12.Be3 Nxd4 13.cxd4 Rd8 14.Rfd1 Qb6 15.Rab1 Bf5
16.Qxb6 axb6 17.Rxb6 Rxa2 18.Rxb7 Bg4 19.Bf1 Bf6 20.f3 Be6 21.Bh6 Ra1 22.Rxa1 Bxd4+
23.Kg2 Bxa1 24.Rxe7 Bg7 25.Bxg7 Kxg7 26.Kf2 Kf6 27.Ra7 h5 28.h4 Rd1 29.Bg2 Rb1
30.Ra4 Rc1 31.f4 Rc2 32.Be4 Rb2 33.Bd3 Rb7 34.Ra5 Bg4 35.Ra2 Re7 36.e4 Rc7
37.Ke3 Rc1 38.Ra6+ Kg7 39.f5 gxf5 40.exf5 Rd1 41.f6+ Kh6 42.Ra8 Rxd3+ 43.Kxd3 Kg6
44.Rg8+ Kxf6 45.Rxg4 hxg4 46.Ke4 Ke6 47.Kf4 f5 48.Kg5 Ke5 49.h5 Ke4 50.h6 f4
51.h7 fxg3 52.h8=Q g2 53.Qa8+  1-0

