[Event "Candidates qf Spassky-Portisch +1-1=12"]
[Site "Mexico City"]
[Date "1980.04.??"]
[Round "5"]
[White "Spassky, Boris Vasilievich"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo "2615"]
[BlackElo "2655"]

1. d4 e6 2. e4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Qc7 7. Qg4 f5 8. Qh5+ g6 9. Qd1 Nc6 10. Nf3 Bd7 11. dxc5 h6 12. Rb1 Nge7 13. Bb5 Nxe5 14. Qd4 Nxf3+ 15. gxf3 Kf7 16. Bf4 Qc8 17. Bd6 Rh7 18. Rg1 Bxb5 19. Bxe7 Kxe7 20. Rxb5 Kf7 21. Kd2 Rg7 22. Qh4 Qc6 23. Rgb1 Kg8 24. Qb4 Rb8 25. Qa5 Kh7 1/2-1/2