[Event "Rubinstein Memorial-13"]
[Site "Polanica Zdroj"]
[Date "1975.08.10"]
[Round "4"]
[White "Ornstein, Axel"]
[Black "Popov, Luben"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. O-O d6 7. Nd2 Be7 8. f4 Nbd7 9. c3 g6 10. Qe2 e5 11. fxe5 Nxe5 12. Bc2 O-O 1/2-1/2