[Event "Interzonal-09b"]
[Site "Petropolis"]
[Date "1973.08.15"]
[Round "16"]
[White "Ivkov, Borislav"]
[Black "Geller, Efim P"]
[Result "1/2-1/2"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bg5 O-O 6. e3 h6 7. Bxf6 Bxf6 8. Rc1 c6 9. Bd3 Nd7 10. O-O dxc4 11. Bxc4 e5 12. Ne4 exd4 13. Nxf6+ Nxf6 1/2-1/2