[Event "Interzonal-10a"]
[Site "Biel"]
[Date "1976.07.13"]
[Round "3"]
[White "Portisch, Lajos"]
[Black "Geller, Efim P"]
[Result "1-0"]
[WhiteElo "2625"]
[BlackElo "2620"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. g3 d6 7. Bg2 g6 8. b3 Bg7 9. Bb2 O-O 10. Nh3 Nbd7 11. O-O Qb8 12. Bc3 Rc8 13. Re1 Ra7 14. Nf4 Rb7 15. Na3 c4 16. b4 Rxb4 17. Bxb4 Qxb4 18. Nc2 Qc5 19. Rb1 g5 20. Nb4 Bb7 21. Ne6 fxe6 22. dxe6 Bxg2 23. exd7 Nxd7 24. Kxg2 e6 25. Nc2 Rf8 26. f3 g4 27. f4 h5 28. e3 Qc6+ 29. Kg1 Bc3 30. Re2 Nc5 31. Nd4 Bxd4 32. Qxd4 Ne4 33. Rb6 Qd5 34. Qxd5 exd5 35. Reb2 c3 36. Rc2 Kf7 37. Kf1 Ke6 38. Ke2 h4 39. gxh4 Rh8 40. Kd3 Rxh4 41. Rb8 Rh3 42. Re8+ Kf5 43. a4 1-0