| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. C H Maderna vs J Canepa |
| 1-0 | 44 |
1938 |
Carrasco | D67 Queen's Gambit Declined, Orthodox Defense, Bd3 line |
| 27. C H Maderna vs Alekhine |
| ½-½ | 37 |
1938 |
Carrasco (14) | E02 Catalan, Open, 5.Qa4 |
| 28. E Rotunno vs C H Maderna |
| 0-1 | 44 |
1938 |
Carrasco | D17 Queen's Gambit Declined Slav |
| 29. C H Maderna vs Trompowsky |
| ½-½ | 42 |
1938 |
Carrasco | E33 Nimzo-Indian, Classical |
| 30. Guimard vs C H Maderna |
 | 1-0 | 38 |
1941 |
ARG-ch Buenos Aires | C34 King's Gambit Accepted |
| 31. C H Maderna vs Najdorf |
| 0-1 | 46 |
1942 |
Mar del Plata | C02 French, Advance |
| 32. C H Maderna vs M Czerniak |
| ½-½ | 50 |
1942 |
Mar del Plata | E67 King's Indian, Fianchetto |
| 33. J Canepa vs C H Maderna |
| 0-1 | 40 |
1942 |
Mar del Plata | D58 Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst |
| 34. M Czerniak vs C H Maderna |
| 1-0 | 49 |
1943 |
Mar del Plata | B30 Sicilian |
| 35. M Czerniak vs C H Maderna |
| ½-½ | 41 |
1943 |
Circulo vs | D00 Queen's Pawn Game |
| 36. M Czerniak vs C H Maderna |
| 1-0 | 37 |
1944 |
La Plata Jockey Club | D01 Richter-Veresov Attack |
| 37. H Rossetto vs C H Maderna |
| 1-0 | 40 |
1944 |
Mar del Plata | C30 King's Gambit Declined |
| 38. C H Maderna vs Najdorf |
| 0-1 | 27 |
1944 |
Mar del Plata ;HCL 25 | B84 Sicilian, Scheveningen |
| 39. C H Maderna vs M Czerniak |
| ½-½ | 44 |
1945 |
Buenos Aires Circulo | D14 Queen's Gambit Declined Slav, Exchange Variation |
| 40. C H Maderna vs Najdorf |
| 0-1 | 40 |
1945 |
Mar del Plata | C19 French, Winawer, Advance |
| 41. C H Maderna vs De Ronde |
| ½-½ | 69 |
1945 |
Buenos Aires Circulo | E60 King's Indian Defense |
| 42. C H Maderna vs Najdorf |
| 0-1 | 30 |
1945 |
Buenos Aires Circulo ;HCL 24 | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 43. Najdorf vs C H Maderna |
 | 1-0 | 33 |
1946 |
Mar del Plata | A90 Dutch |
| 44. O Rocas vs C H Maderna |
| 1-0 | 41 |
1946 |
Mar del Plata ARG | A03 Bird's Opening |
| 45. C H Maderna vs Najdorf |
 | 1-0 | 89 |
1946 |
Mar del Plata | D15 Queen's Gambit Declined Slav |
| 46. H Rossetto vs C H Maderna |
| 0-1 | 40 |
1947 |
Mar del Plata ARG | D15 Queen's Gambit Declined Slav |
| 47. C H Maderna vs Julio Bolbochan |
| ½-½ | 32 |
1947 |
Mar del Plata ARG | D66 Queen's Gambit Declined, Orthodox Defense, Bd3 line |
| 48. Guimard vs C H Maderna |
| ½-½ | 29 |
1947 |
Mar del Plata ARG | D61 Queen's Gambit Declined, Orthodox, Rubinstein Attack |
| 49. C H Maderna vs P Michel |
| ½-½ | 23 |
1947 |
Mar del Plata ARG | D05 Queen's Pawn Game |
| 50. Jacobo Bolbochan vs C H Maderna |
| 1-0 | 41 |
1947 |
Mar del Plata ARG | D66 Queen's Gambit Declined, Orthodox Defense, Bd3 line |