[Event "Mar del Plata International-13"]
[Site "Mar del Plata"]
[Date "1950.03.09"]
[Round "2"]
[White "Maderna, Carlos Hugo"]
[Black "De Freitas, Marcio Elisio"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. e4 e5 7. Nge2 Nc6 8. d5 Nb8 9. O-O Nbd7 10. Rb1 h6 11. b4 a5 12. a3 Kh7 13. h3 Ng8 14. Qc2 Ne7 15. Be3 b6 16. c5 axb4 17. axb4 bxc5 18. bxc5 f5 19. cxd6 cxd6 20. Nb5 Nf6 21. Nc7 Ra5 22. Ne6 Bxe6 23. Bb6 Qc8 24. Qxc8 Bxc8 25. Bxa5 Nxe4 26. Rfd1 Ba6 27. Nc3 Nxc3 28. Bxc3 Rc8 29. Bb4 Rd8 30. Ba3 e4 31. Bf1 Bxf1 32. Kxf1 Rd7 33. Rb5 Be5 34. Rdb1 Kg8 35. Rb7 Rxb7 36. Rxb7 Nxd5 37. Rd7 Nb6 38. Rd8+ Kf7 39. Bxd6 Bxd6 40. Rxd6 Nc4 41. Rd7+ Kf6 42. Ke2 h5 43. Rd4 Ne5 44. Rd6+ Kg5 45. Re6 Nf3 46. h4+ Kh6 47. Re7 Ng1+ 48. Ke3 Nf3 49. Kf4 Nh2 50. Ra7 Nf3 51. Rd7 Nh2 52. Rc7 Nf3 53. Ke3 Nh2 54. Kf4 Nf3 55. Rf7 Nh2 56. Rb7 Nf3 57. Re7 Nh2 1/2-1/2