[Event "Vidmar Memorial-03"]
[Site "Portoroz/Ljubljana"]
[Date "1975.06.08"]
[Round "6"]
[White "Portisch, Lajos"]
[Black "Mariotti, Sergio"]
[Result "1-0"]

1. d4 e6 2. c4 f5 3. g3 Nf6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d5 7. Qc2 c6 8. Nbd2 a5 9. Ne5 Nbd7 10. Nd3 Bd6 11. Nf3 Qe7 12. Nfe5 Bb8 13. Bf4 Nxe5 14. Bxe5 Bxe5 15. dxe5 Nd7 16. Rfc1 b6 17. cxd5 cxd5 18. Qc6 Ba6 19. Nf4 Rae8 20. Qxe6+ Qxe6 21. Nxe6 Rxe6 22. Bxd5 Re8 23. Rc6 Kf7 24. f4 Bxe2 25. Rac1 Re7 26. Rd6 Nf8 27. Rc8 Kg6 28. Rdd8 b5 29. Rxf8 Rb6 30. Rb8 Rxb8 31. Rxb8 Rc7 32. Rb6+ Kh5 33. Rc6 Rd7 34. Rd6 Rc7 35. Bc6 g5 36. Kf2 gxf4 37. Kxe2 fxg3 38. hxg3 Kg4 39. e6 Kxg3 40. Rd3+ 1-0