[Event "Candidates sf Spassky-Portisch +4-2=9"]
[Site "Geneve"]
[Date "1977.08.??"]
[Round "10"]
[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 d5 6. Nf3 O-O 7. O-O Nc6 8. a3 Bxc3 9. bxc3 dxc4 10. Bxc4 Qc7 11. Bd3 e5 12. Qc2 Re8 13. Nxe5 Nxe5 14. dxe5 Qxe5 15. f3 Bd7 16. a4 Rad8 17. e4 Bc6 18. Bc4 Rd7 19. Qb3 Red8 20. Ra2 Nh5 21. g3 Nxg3 22. hxg3 Rd2 23. Rxd2 Rxd2 24. Bxd2 Qxg3+ 25. Kh1 Qh3+ 26. Kg1 Qg3+ 1/2-1/2