[Event "Interzonal-13a"]
[Site "Tunis"]
[Date "1985.05.12"]
[Round "12"]
[White "Hort, Vlastimil"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo "2560"]
[BlackElo "2635"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nf6 5. Nf3 Nc6 6. Bf4 Bf5 7. e3 e6 8. Bd3 Bxd3 9. Qxd3 Bb4 10. O-O O-O 11. Bg5 Rc8 12. Rfc1 Be7 13. Qb5 1/2-1/2