[Event "Candidates qf Spassky-Portisch +1-1=12"]
[Site "Mexico City"]
[Date "1980.05.??"]
[Round "14"]
[White "Spassky, Boris Vasilievich"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo "2615"]
[BlackElo "2655"]

1. e4 c5 2. Nc3 d6 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. Be3 Rb8 7. Qd2 b5 8. Nge2 Nd4 9. O-O e6 10. Nd1 Ne7 11. Nc1 b4 12. a3 a5 13. axb4 axb4 14. c3 bxc3 15. bxc3 Ndc6 16. Bh6 O-O 17. Bxg7 Kxg7 18. Ne3 d5 19. Qc2 d4 20. Nc4 e5 21. Nb3 dxc3 22. Qxc3 Nd4 23. Nxd4 cxd4 24. Qa3 f6 25. Qc5 Rb7 26. f4 exf4 27. Rxf4 Rc7 28. Qb6 g5 29. Rff1 Ng6 30. Ra5 Rcf7 31. Qc5 Be6 32. Nd6 Rd7 33. Ra6 Qe7 34. Rb1 Ne5 35. Qa3 Rfd8 36. Rbb6 Kg6 37. h3 Kg7 38. Bf1 Rf8 39. Qa1 h6 40. Kg2 Rfd8 41. Nb5 Bf7 42. Rxf6 Qb4 43. Rab6 Nxd3 44. Nd6 Qd2+ 45. Kh1 Rxd6 46. Rbxd6 Rxd6 47. Rxd6 Nf2+ 48. Kg1 Nxe4 49. Qxd4+ Qxd4+ 50. Rxd4 Nxg3 1/2-1/2