[Event "Candidates qf Petrosian-Portisch +3-2=8"]
[Site "Palma de Mallorca"]
[Date "1974.01.??"]
[Round "2"]
[White "Portisch, Lajos"]
[Black "Petrosian, Tigran V"]
[Result "1/2-1/2"]

1. c4 Nf6 2. Nc3 c5 3. Nf3 g6 4. e4 Nc6 5. d4 cxd4 6. Nxd4 Bg7 7. Be3 Ng4 8. Qxg4 Nxd4 9. Qd1 Ne6 10. Rc1 d6 11. Bd3 O-O 12. O-O Nc5 13. Bb1 a5 14. Qd2 Bd7 15. Bd4 Bxd4 16. Qxd4 Bc6 17. Qd2 f6 18. Rfd1 Rf7 19. Bc2 Qb6 20. Rb1 Rd8 21. Nd5 Qa7 22. b3 e5 23. Qe3 Qb8 24. Rd2 Bxd5 25. Rxd5 b6 26. Rbd1 Ne6 27. g3 Kg7 28. R1d2 Qc7 29. Bd1 Qc6 30. h4 Nc7 31. R5d3 Na6 32. Bg4 Nb4 33. Rc3 Qc5 34. Qe1 Re7 35. Qc1 Qc6 36. Bf3 Qc7 37. Bg2 Nc6 38. Rd5 Nb4 39. Rd2 Nc6 40. Rd5 Nb4 1/2-1/2