[Event "FRG-ch International"]
[Site "Dortmund FRG"]
[Date "1973.05.20"]
[EventDate "?"]
[Round "4"]
[Result "1-0"]
[White "Hans-Joachim Hecht"]
[Black "Luben S Popov"]
[ECO "B43"]
[WhiteElo "2485"]
[BlackElo "2450"]
[PlyCount "77"]

1.e4 c5 2.Nf3 e6 3.Nc3 a6 4.d4 cxd4 5.Nxd4 b5 6.Bd3 Ne7 7.O-O
Nec6 8.Nb3 d6 9.Be3 Nd7 10.f4 Be7 11.Qf3 Qc7 12.Rae1 O-O
13.Qg3 Kh8 14.a3 b4 15.axb4 Nxb4 16.Bd4 f6 17.f5 Ne5 18.Rf4
Nbxd3 19.cxd3 Rg8 20.Qh3 g5 21.Rf2 Rb8 22.Nc1 Rb4 23.N1e2 Qb7
24.fxe6 g4 25.Qe3 Bxe6 26.Nf4 g3 27.hxg3 Ng4 28.Qf3 Bf7
29.Nce2 Nxf2 30.Qxf2 Rxb2 31.Bxb2 Qxb2 32.Qa7 Re8 33.Qxa6 d5
34.exd5 Bc5+ 35.Kh2 Qe5 36.d4 Bxd4 37.Nxd4 Qxe1 38.Qxf6+ Kg8
39.Nf5 1-0