[Event "Rio de Janeiro Zonal"]
[Site "Rio de Janeiro"]
[Date "1957.??.??"]
[Round "?"]
[White "Panno, Oscar"]
[Black "Cantero, Ronaldo"]
[Result "1-0"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nf3 c5 7. d5 e5 8. dxe6 fxe6 9. O-O Nc6 10. Ng5 Ne5 11. Qb3 Nc6 12. Nce4 Qc7 13. Bf4 e5 14. Bd2 Bg4 15. e3 Nxe4 16. Nxe4 Rad8 17. h3 Bc8 18. Rad1 Ne7 19. Bc1 b6 20. Nc3 Bd7 21. Nb5 Bxb5 22. Qxb5 Rf6 23. Rd2 Re6 24. Be4 Rf6 25. Qb3 Nf5 26. Rfd1 Bf8 27. Qd3 Be7 28. b3 Rff8 29. Bb2 h6 30. Qe2 Kh7 31. Kh2 Qc8 32. Qg4 h5 33. Qe2 Qe6 34. g4 hxg4 35. Qxg4 Qf7 36. Rg1 Kg7 37. Re2 Rde8 38. f4 Qf6 39. Kh1 Bd8 40. fxe5 dxe5 41. Rf2 Kh6 42. Bc1 Qg5 43. Qxg5+ Bxg5 44. Rfg2 Nd6 45. Bc6 1-0