[Event "Interzonal-07"]
[Site "Sousse"]
[Date "1967.11.05"]
[Round "16"]
[White "Cuellar Gacharna, Miguel"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Nb8 10. d4 Nbd7 11. c4 c6 12. c5 Qc7 13. cxd6 Bxd6 14. Bg5 exd4 15. Bxf6 gxf6 16. Nxd4 Nc5 17. Qc2 Rd8 18. Rd1 Nxb3 19. Nxb3 Kh8 20. Nc3 Qe7 21. Ne2 c5 22. Ng3 Rg8 23. Rxd6 Qxd6 24. Rd1 Qf4 25. Nxc5 Ra7 26. b4 a5 27. a3 axb4 28. axb4 Qe5 29. Nd3 Qd4 30. Nf4 Ra1 31. Rxa1 Qxa1+ 32. Kh2 Qd4 33. Nfh5 Be6 34. Qe2 Rc8 35. Qf3 Qe5 36. Qe3 f5 37. Qh6 f4 38. Nxf4 Rg8 39. Nxe6 fxe6 40. Qd2 Qg5 41. Qe2 1/2-1/2