[Event "IBM"]
[Site "Amsterdam"]
[Date "1967.??.??"]
[Round "1"]
[White "Portisch, Lajos"]
[Black "Ghitescu, Theodor"]
[Result "1-0"]
1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. f3 O-O 6. Be3 Nc6 7. Nge2 a6 8. Rb1 Bd7 9. Qd2 Re8 10. b4 Qb8 11. g3 e5 12. d5 Ne7 13. Bg2 c6 14. dxc6 bxc6 15. O-O Be6 16. Rfd1 Rd8 17. Na4 Nc8 18. Qd3 Nd7 19. Nec3 Ndb6 20. Nb2 Ne7 21. Nca4 Nbc8 22. Nc5 Bd7 23. Nxd7 Rxd7 24. Na4 Rb7 25. a3 h6 26. Nc3 a5 27. b5 c5 28. f4 Kh7 29. Rf1 Ng8 30. Nd5 Raa7 31. f5 Nb6 32. fxg6+ fxg6 33. Rbd1 Qe8 34. Nxb6 Rxb6 35. Bh3 h5 36. Rf2 Bh6 37. Rdf1 Kg7 38. Bxh6+ Nxh6 39. Rf6 Qd8 40. Qf3 Rbb7 41. Be6 Qe7 42. Bd5 1-0