[Event "Vratsa Zonal"] [Site "Vratsa BUL"] [Date "1975.10.27"] [EventDate "?"] [Round "4"] [Result "1/2-1/2"] [White "Juergen Dueball"] [Black "Aleksandar Matanovic"] [ECO "C92"] [WhiteElo "2324"] [BlackElo "2490"] [PlyCount "44"] 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Nd7 10.d4 Nb6 11.Nbd2 exd4 12.cxd4 Nb4 13.d5 Nd3 14.Re3 Nxc1 15.Rxc1 Bf6 16.Rc2 Nd7 17.Nf1 Bb7 18.Ng3 g6 19.Ne2 Re8 20.Ned4 Nc5 21.Rce2 Bg7 22.Re1 Rc8 1/2-1/2