| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. G Barbero vs F Santacruz |
| 1-0 | 47 | 1979 | Panamerican Junior Championship | B18 Caro-Kann, Classical |
| 27. F Santacruz vs G Barbero |
| 1-0 | 42 | 1979 | Panamerican Junior Championship | A84 Dutch |
| 28. G Barbero vs C E da Matta |
| 1-0 | 41 | 1979 | Panamerican Junior Championship | D05 Queen's Pawn Game |
| 29. G Barbero vs J Campos Moreno |
| 0-1 | 96 | 1979 | Panamerican Junior Championship | C73 Ruy Lopez, Modern Steinitz Defense |
| 30. A Donatti vs G Barbero |
| ½-½ | 23 | 1979 | Panamerican Junior Championship | A28 English |
| 31. G Barbero vs R Hernandez Fierra |
| 0-1 | 44 | 1979 | Panamerican Junior Championship | C45 Scotch Game |
| 32. C E da Matta vs G Barbero |
 | 1-0 | 39 | 1979 | Panamerican Junior Championship | A46 Queen's Pawn Game |
| 33. Y Terada vs G Barbero |
| 0-1 | 31 | 1979 | World Junior Championship | C66 Ruy Lopez |
| 34. G Barbero vs T Toshkov |
| 1-0 | 40 | 1979 | World Junior Championship | A04 Reti Opening |
| 35. G Barbero vs Chernin |
| 0-1 | 41 | 1979 | World Junior Championship | A06 Reti Opening |
| 36. Seirawan vs G Barbero |
| 1-0 | 26 | 1979 | World Junior Championship | A28 English |
| 37. G Barbero vs R Douven |
| ½-½ | 35 | 1979 | World Junior Championship | A05 Reti Opening |
| 38. P Nikolic vs G Barbero |
| 1-0 | 26 | 1979 | World Junior Championship | A52 Budapest Gambit |
| 39. G Barbero vs D Izquierdo |
| ½-½ | 8 | 1979 | Panamerican Junior Championship | A00 Uncommon Opening |
| 40. J Reyes vs G Barbero |
| 1-0 | 34 | 1979 | Panamerican Junior Championship | C66 Ruy Lopez |
| 41. A P Stacchini vs G Barbero |
| 0-1 | 65 | 1979 | Panamerican Junior Championship | A44 Old Benoni Defense |
| 42. G Barbero vs J A Fernandez |
| 1-0 | 41 | 1979 | Panamerican Junior Championship | B21 Sicilian, 2.f4 and 2.d4 |
| 43. I Morovic Fernandez vs G Barbero |
| 1-0 | 40 | 1979 | Panamerican Junior Championship | B92 Sicilian, Najdorf, Opocensky Variation |
| 44. G Barbero vs Y E Liao |
| 1-0 | 23 | 1979 | Panamerican Junior Championship | A47 Queen's Indian |
| 45. G Barbero vs M Sanchez |
| 1-0 | 27 | 1979 | Panamerican Junior Championship | D50 Queen's Gambit Declined |
| 46. F Santacruz vs G Barbero |
| ½-½ | 41 | 1979 | Panamerican Junior Championship | E11 Bogo-Indian Defense |
| 47. G Barbero vs C Alvarez |
| 1-0 | 24 | 1980 | Los Polvorines Open | C45 Scotch Game |
| 48. G Barbero vs Panno |
| 0-1 | 44 | 1980 | Los Polvorines Open | E26 Nimzo-Indian, Samisch |
| 49. G Barbero vs D Rivera |
| 1-0 | 57 | 1980 | Los Polvorines Open | A62 Benoni, Fianchetto Variation |
| 50. Quinteros vs G Barbero |
| 0-1 | 26 | 1980 | Los Polvorines Open | A07 King's Indian Attack |
Kibitzing
