[Event "Palma de Mallorca Gran Torneo-07"]
[Site "Palma de Mallorca"]
[Date "1971.11.29"]
[Round "1"]
[White "Portisch, Lajos"]
[Black "Panno, Oscar"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 b6 7. O-O Bb7 8. Na4 cxd4 9. exd4 Qc7 10. h3 d5 11. c5 bxc5 12. a3 c4 13. Bxh7+ Nxh7 14. axb4 Nd7 15. Nc5 Nxc5 16. bxc5 f6 17. Bd2 Rfb8 18. Ba5 Qd7 19. Bc3 Nf8 20. Qc2 a6 21. Rfe1 Bc6 22. Re3 Qc7 23. Ba5 Qb7 24. Bb6 Be8 25. Qd2 Bf7 26. b4 cxb3 27. Rxb3 Nd7 28. Qe2 e5 29. Nh4 Qc6 30. Rxa6 Rxa6 31. Qxa6 Qe6 32. Qa1 exd4 33. Qxd4 Qe1+ 34. Kh2 Qe5+ 35. Qxe5 fxe5 1/2-1/2