[Event "Interzonal-10a"]
[Site "Biel"]
[Date "1976.07.13"]
[Round "3"]
[White "Gulko, Boris F"]
[Black "Petrosian, Tigran V"]
[Result "1/2-1/2"]
[WhiteElo "2530"]
[BlackElo "2635"]

1. e4 c5 2. Ne2 Nc6 3. d4 cxd4 4. Nxd4 d6 5. c4 Nf6 6. Nc3 g6 7. Be2 Nxd4 8. Qxd4 Bg7 9. Bg5 h6 10. Be3 O-O 11. Qd2 Kh7 12. O-O Be6 13. Rac1 Qa5 14. f4 Rac8 15. b3 a6 16. f5 Bd7 17. h3 Bc6 18. Bd3 Nd7 19. Nd5 Qxd2 20. Bxd2 Rfe8 21. Bb1 Bd4+ 22. Kh1 Kg7 23. fxg6 fxg6 24. Nf4 Bf6 25. Be3 1/2-1/2