[Event "Interzonal-10a"]
[Site "Biel"]
[Date "1976.07.20"]
[Round "7"]
[White "Rogoff, Kenneth"]
[Black "Diaz Diaz, Joaquin Carlos"]
[Result "1/2-1/2"]
[WhiteElo "2480"]

1. Nf3 d6 2. d4 Bg4 3. e4 c6 4. c3 Qc7 5. Nbd2 Nd7 6. h3 Bh5 7. Bd3 Ngf6 8. O-O e5 9. Qc2 Be7 10. Re1 h6 11. Nh4 O-O-O 12. Nf5 Bf8 13. Nc4 g6 14. Ng3 g5 15. Nxh5 Nxh5 16. Bf1 Ndf6 17. Be3 Kb8 18. Rad1 Be7 19. f3 Nf4 20. dxe5 dxe5 21. Rxd8+ Rxd8 22. Rd1 b5 23. Nd2 Ne6 24. Nb3 a5 25. Rxd8+ Qxd8 26. Qf2 Nd7 27. Qd2 a4 28. Na5 Qc7 29. b4 axb3 30. axb3 Nb6 31. b4 1/2-1/2