[Event "Candidates qf Spassky-Portisch +1-1=12"]
[Site "Mexico City"]
[Date "1980.04.??"]
[Round "13"]
[White "Portisch, Lajos"]
[Black "Spassky, Boris Vasilievich"]
[Result "1/2-1/2"]
[WhiteElo "2655"]
[BlackElo "2615"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 g6 6. Bg5 Bg7 7. e3 h6 8. Bh4 d6 9. d5 O-O 10. Be2 g5 11. Bg3 Nh5 12. Rb1 Nxg3 13. hxg3 Qe7 14. O-O Nd7 15. Nd4 1/2-1/2