[Event "Interzonal-10a"]
[Site "Biel"]
[Date "1976.07.20"]
[Round "7"]
[White "Portisch, Lajos"]
[Black "Matanovic, Aleksandar"]
[Result "1/2-1/2"]
[WhiteElo "2625"]
[BlackElo "2525"]

1. c4 Nf6 2. Nc3 c5 3. Nf3 e6 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nc6 7. O-O Be7 8. d4 O-O 9. Nxd5 exd5 10. Be3 c4 11. Ne5 f6 12. Nxc6 bxc6 13. Bf4 a5 14. b3 Ba6 15. Qc2 Kh8 16. Rfb1 Bd6 17. Bxd6 Qxd6 18. e3 cxb3 19. Rxb3 a4 20. Rb6 Bb5 21. Rb1 Qd7 22. Qc5 Rfb8 23. Bf1 Rxb6 24. Qxb6 Bxf1 25. Qb8+ Qc8 26. Qxc8+ Rxc8 27. Kxf1 Kg8 28. Rc1 Kf7 29. Rc5 Rb8 30. Rxc6 Rb2 31. a3 Rb3 32. Rd6 Rxa3 33. Rxd5 Ra2 34. Ra5 a3 35. Ra7+ Kg6 36. Kg2 f5 37. h3 h5 38. g4 hxg4 39. hxg4 fxg4 40. Kg3 Kf5 41. Re7 1/2-1/2