[Event "US Open-66"]
[Site "San Juan"]
[Date "1965.07.??"]
[Round "?"]
[White "Mengarini, Ariel"]
[Black "Lombardy, William James"]
[Result "0-1"]

1. e4 c5 2. g3 d5 3. d4 dxe4 4. d5 e5 5. Bg2 f5 6. g4 f4 7. Bxe4 Nf6 8. Bf3 e4 9. g5 exf3 10. gxf6 Qxf6 11. Qxf3 Bd6 12. Nc3 O-O 13. Ne4 Qe7 14. Ne2 Bg4 15. Qxg4 Qxe4 16. Rg1 Rf7 17. Qc8+ Bf8 18. Qe6 Qxc2 19. Nxf4 Nd7 20. Qe2 Qa4 21. Ne6 Nf6 22. Bh6 Kh8 23. b3 Qd7 24. Be3 Qxd5 25. Nxf8 Raxf8 26. Rd1 Qe5 27. Rg5 Qc3+ 28. Bd2 Qh3 29. Rxc5 Qxh2 30. Be3 Ne4 31. Rc2 Qh1+ 32. Qf1 Qh5 33. Qg2 Re7 34. Rd3 h6 35. Re2 Rf3 36. Bc5 Rxd3 37. Bxe7 Nc3 38. Rd2 Qd1+ 0-1