[Event "Interzonal-11b"]
[Site "Rio de Janeiro"]
[Date "1979.10.17"]
[Round "18"]
[White "Balashov, Yuri S"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[WhiteElo "2600"]
[BlackElo "2525"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 Re8 13. b3 Bf8 14. Nf1 g6 15. Ng3 Bg7 16. d5 Nb7 17. a4 Bd7 18. axb5 axb5 19. Be3 Ra5 20. Qc1 Rea8 21. Qb2 1/2-1/2