[Event "Costa del Sol-17"]
[Site "Torremolinos"]
[Date "1977.02.??"]
[Round "?"]
[White "Christiansen, Larry Mark"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "1-0"]
[WhiteElo "2460"]
[BlackElo "2410"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. Nf3 g6 5. e4 Nb6 6. d4 Bg7 7. h3 O-O 8. Be2 Nc6 9. Be3 f5 10. exf5 Bxf5 11. Qb3+ Kh8 12. d5 Ne5 13. Nxe5 Bxe5 14. Rd1 Qd6 15. O-O a5 16. a3 a4 17. Qb5 Bd7 18. Qd3 Bf5 19. Qd2 Rad8 20. Rfe1 Bg7 21. Bf1 e5 22. dxe6 Qe7 23. Qc1 Qxe6 24. Rxd8 Rxd8 25. Bg5 Qc8 26. Bxd8 Qxd8 27. Qe3 Bf6 28. Bb5 c6 29. Bxa4 Nc4 30. Qe2 Qd4 31. Rd1 Qf4 32. g3 Qe5 33. Qxc4 b5 34. Qf7 1-0