[Event "Interzonal-09b"]
[Site "Petropolis"]
[Date "1973.08.06"]
[Round "10"]
[White "Biyiasas, Peter"]
[Black "Geller, Efim P"]
[Result "1-0"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. b3 Nf6 7. Re1 g6 8. Bb2 Bg7 9. c4 e5 10. Nc3 O-O 11. d3 Nh5 12. Nd5 Ne7 13. Bc1 Nxd5 14. cxd5 Nf4 15. Bxf4 exf4 16. Rc1 Rae8 17. Qd2 f5 18. Ng5 fxe4 19. dxe4 Qg4 20. Nf3 Qh5 21. h3 b6 22. b4 Be5 23. a4 g5 24. Nxe5 Rxe5 25. f3 Qg6 26. Kf2 h5 27. Rh1 Qg7 28. bxc5 bxc5 29. Qc3 Rb8 30. Rb1 Ree8 31. Qxg7+ Kxg7 32. Ke2 Kf6 33. Kd3 Ke5 34. Kc4 Rh8 35. a5 Rhc8 36. Rhg1 Rb4+ 37. Rxb4 cxb4+ 38. Kb5 Kd4 39. Ka6 b3 40. Rd1+ 1-0