[Event "Interzonal-10a"]
[Site "Biel"]
[Date "1976.07.31"]
[Round "15"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Sanguineti, Raul"]
[Result "1/2-1/2"]
[WhiteElo "2380"]
[BlackElo "2480"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 Bd7 7. O-O g6 8. Nxc6 Bxc6 9. f4 Nxe4 10. Nxe4 Bxe4 11. Qd4 Qb6 12. Qxb6 axb6 13. Be3 Rc8 14. Bb5+ Bc6 15. a4 Bg7 16. c3 Kd7 17. Bxb6 1/2-1/2