[Event "Candidates sf Spassky-Portisch +4-2=9"]
[Site "Geneve"]
[Date "1977.07.??"]
[Round "4"]
[White "Portisch, Lajos"]
[Black "Spassky, Boris Vasilievich"]
[Result "1/2-1/2"]
[WhiteElo "2625"]
[BlackElo "2610"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 d5 7. O-O O-O 8. a3 Bxc3 9. bxc3 dxc4 10. Bxc4 Qc7 11. Bd3 e5 12. Qc2 Re8 13. dxe5 Nxe5 14. Nxe5 Qxe5 15. f3 Be6 16. e4 c4 17. Be2 Qc5+ 18. Kh1 Nd7 19. Bf4 b5 20. Rfd1 f6 21. a4 a6 22. Qd2 Qc6 23. Qe3 bxa4 24. Bd6 Bf7 25. Qd2 Ne5 26. Bxe5 Rxe5 27. Qa2 Ra5 28. Qa3 Qc7 29. Rd4 h6 30. Rb1 Rb8 31. Rxb8+ Qxb8 32. h3 Qg3 33. Bxc4 Bxc4 34. Rxc4 Rg5 35. Qa2 Qe1+ 36. Kh2 Qg3+ 1/2-1/2