[Event "Candidates sf Spassky-Portisch +4-2=9"]
[Site "Geneve"]
[Date "1977.08.19"]
[Round "15"]
[White "Spassky, Boris Vasilievich"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo "2610"]
[BlackElo "2625"]

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 Nd7 10. d4 Bf6 11. a4 Na5 12. Bc2 Bb7 13. Na3 exd4 14. Nxd4 Nc6 15. axb5 Nxd4 16. cxd4 axb5 17. Qd3 g6 18. Qxb5 Ba6 19. Qb4 c5 20. dxc5 dxc5 21. Qb3 Bd4 22. Be3 Qf6 23. Bxd4 cxd4 24. Qg3 Nc5 25. b4 Ne6 26. b5 Bb7 27. e5 Qe7 28. Nc4 Rxa1 29. Rxa1 Qc5 30. Bd3 Bd5 1/2-1/2