[Event "Leningrad Interzonal"]
[Site "Leningrad"]
[Date "1973.??.??"]
[Round "15"]
[White "Karpov, Anatoly"]
[Black "Radulov, Ivan"]
[Result "1/2-1/2"]
[WhiteElo "2645"]
[BlackElo "2510"]
[ECO "A37"]
[PlyCount "78"]

1.c4 e5 2.Nc3 c5 3.g3 g6 4.Bg2 Bg7 5.Nf3 Ne7 6.O-O O-O 7.Ne1 Nbc6 8.Nc2 d6 9.Ne3 Be6 10.a3 Qd7 11.d3 Bh3 12.Ned5 Bxg2 13.Kxg2 Nxd5 14.Nxd5 Ne7 15.Nxe7+ Qxe7 16.e4 f5 17.f3 h5 18.Bd2 Kh7 19.b4 Bh6 20.exf5 Rxf5 21.Bxh6 Kxh6 22.Qd2+ Kg7 23.bxc5 dxc5 24.Rae1 Rd8 25.Re3 Rd4 26.Qe2 Qd6 27.Rb1 Rf7 28.a4 b6 29.Re1 Rd7 30.h4 Rxd3 31.Rxd3 Qxd3 32.Qxe5+ Kh7 33.Qe6 Qf5 34.Qxf5 gxf5 35.Kf2 Kg7 36.a5 Rd4 37.axb6 axb6 38.Re6 Rxc4 39.Rxb6 f4 1/2-1/2