[Event "Candidates qf Petrosian-Portisch +3-2=8"]
[Site "Palma de Mallorca"]
[Date "1974.01.??"]
[Round "13"]
[White "Petrosian, Tigran V"]
[Black "Portisch, Lajos"]
[Result "1-0"]

1. Nf3 d5 2. d4 e6 3. c4 Nf6 4. Bg5 Be7 5. Nc3 O-O 6. Rc1 h6 7. Bh4 b6 8. cxd5 Nxd5 9.
Nxd5 exd5 10. Bxe7 Qxe7 11. g3 Ba6 12. e3 c5 13. Bxa6 Nxa6 14. O-O Nc7 15. b3 Rac8 16. Re1
Rfd8 17. h4 Ne6 18. Qd3 Qf6 19. Kg2 cxd4 20. exd4 Rxc1 21. Rxc1 Qf4 22. gxf4 Nxf4+ 23. Kg3
Nxd3 24. Rc3 Nb4 25. a3 Na6 26. b4 Nb8 27. Rc7 a5 28. b5 Nd7 29. Kf4 h5 30. Ne5 Nf8 31.
Rb7 f6 32. Nc6 Ng6+ 33. Kg3 Rd6 34. Rxb6 Re6 35. Rb8+ Nf8 36. Ra8 Re1 37. Nd8 Kh7 38. b6
Rb1 39. b7 Nd7 40. Rxa5 1-0