[Event "Interzonal-11b"]
[Site "Rio de Janeiro"]
[Date "1979.10.02"]
[Round "8"]
[White "Balashov, Yuri S"]
[Black "Petrosian, Tigran V"]
[Result "1/2-1/2"]
[WhiteElo "2600"]
[BlackElo "2610"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. a3 Bxc3+ 6. bxc3 b6 7. Qg4 Ng6 8. h4 h5 9. Qg3 Ba6 10. Bxa6 Nxa6 11. Qd3 Nb8 12. Nf3 Nc6 1/2-1/2