[Event "Interzonal-13a"]
[Site "Tunis"]
[Date "1985.05.02"]
[Round "5"]
[White "Portisch, Lajos"]
[Black "Chernin, Alexander"]
[Result "1-0"]
[WhiteElo "2635"]
[BlackElo "2495"]
1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 exd5 7. Bf4 Bd6 8. Bg3 Ne4 9. Qb3 O-O 10. e3 Nxc3 11. Qxc3 c5 12. Be2 Bxg3 13. hxg3 Nd7 14. O-O Qe7 15. a4 a5 16. Qa3 Rfc8 17. Rac1 Kf8 18. Bb5 Nf6 19. dxc5 bxc5 20. Rc2 Ba6 21. Rfc1 Bxb5 22. axb5 c4 23. Nd4 a4 24. f3 Qxa3 25. bxa3 Nd7 26. Nc6 Re8 27. Kf2 Ne5 28. Nxe5 Rxe5 29. Rd1 Rae8 30. Re2 h5 31. f4 Rf5 32. Rb2 Rb8 33. b6 Ke7 34. b7 g5 35. Rb5 gxf4 36. gxf4 Kd6 37. Ke2 Kc7 38. Rdxd5 Rxd5 39. Rxd5 Rg8 40. Kf3 Kxb7 41. Rc5 Kb6 42. Rxc4 Kb5 43. Rb4+ 1-0