[Event "Vratsa Zonal"]
[Site "Vratsa BUL"]
[Date "1975.11.03"]
[EventDate "1975.10.23"]
[Round "9"]
[Result "1/2-1/2"]
[White "Ferdinand Strobel"]
[Black "Juergen Dueball"]
[ECO "A02"]
[WhiteElo "2365"]
[BlackElo "2455"]
[Source "Olimpbase"]
[PlyCount "43"]

1.f4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d5 6.d3 b6 7.c4 Bb7
8.Ne5 Nbd7 9.Nc3 e6 10.d4 c5 11.cxd5 Nxd5 12.Nxd5 exd5 13.e3
Nxe5 14.dxe5 Qd7 15.Bd2 Rad8 16.Bc3 d4 17.exd4 Bxg2 18.Kxg2
cxd4 19.Bb4 Rfe8 20.Bd6 f6 21.Re1 fxe5 22.fxe5 1/2-1/2