[Event "Reggio Emilia-16 1973/74"]
[Site "Reggio Emilia"]
[Date "1973.12.31"]
[Round "5"]
[White "Dueball, Juergen"]
[Black "Popov, Luben"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. Bd3 Ne7 7. O-O Nec6 8. Nb3 d6 9. f4 Nd7 10. Bd2 Be7 11. Qh5 g6 12. Qh3 O-O 1/2-1/2