| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. J de Souza Mendes vs J L Alvarez del Monte |
| 0-1 | 38 | 1956 | Montevideo | A05 Reti Opening |
| 27. R Cantero vs J L Alvarez del Monte |
| 1-0 | 25 | 1956 | Montevideo | E76 King's Indian, Four Pawns Attack |
| 28. J L Alvarez del Monte vs P Santos Isain |
| ½-½ | 46 | 1956 | Montevideo | E17 Queen's Indian |
| 29. J L Alvarez del Monte vs H Rossetto |
| 1-0 | 86 | 1956 | Montevideo | D24 Queen's Gambit Accepted |
| 30. J L Alvarez del Monte vs L Bauza |
| 1-0 | 21 | 1956 | Montevideo | A81 Dutch |
| 31. J L Alvarez del Monte vs F Rubio Aguado |
| ½-½ | 18 | 1956 | Montevideo | A60 Benoni Defense |
| 32. W Ader Hausman vs J L Alvarez del Monte |
| ½-½ | 34 | 1956 | Montevideo | E60 King's Indian Defense |
| 33. A Olivera vs J L Alvarez del Monte |
| 0-1 | 57 | 1956 | Montevideo | A40 Queen's Pawn Game |
| 34. J L Alvarez del Monte vs Najdorf |
| 0-1 | 34 | 1956 | Montevideo | E63 King's Indian, Fianchetto, Panno Variation |
| 35. J L Alvarez del Monte vs J Pelikan |
| ½-½ | 42 | 1959 | Buenos Aires | A04 Reti Opening |
| 36. J L Alvarez del Monte vs Eliskases |
| ½-½ | 31 | 1960 | Mar del Plata | A65 Benoni, 6.e4 |
| 37. A Foguelman vs J L Alvarez del Monte |
| 1-0 | 41 | 1960 | Mar del Plata | E60 King's Indian Defense |
| 38. J L Alvarez del Monte vs F Olafsson |
| 0-1 | 33 | 1960 | Mar del Plata | D24 Queen's Gambit Accepted |
| 39. O Bazan vs J L Alvarez del Monte |
| 1-0 | 59 | 1960 | Mar del Plata | E92 King's Indian |
| 40. J L Alvarez del Monte vs C Bielicki |
| ½-½ | 52 | 1960 | Mar del Plata | B90 Sicilian, Najdorf |
| 41. R A Redolfi vs J L Alvarez del Monte |
| 1-0 | 38 | 1960 | Mar del Plata | C45 Scotch Game |
| 42. J L Alvarez del Monte vs C Incutto |
| 0-1 | 38 | 1960 | Mar del Plata | B39 Sicilian, Accelerated Fianchetto, Breyer Variation |
| 43. Bronstein vs J L Alvarez del Monte |
 | 1-0 | 48 | 1960 | Mar del Plata | D51 Queen's Gambit Declined |
| 44. J L Alvarez del Monte vs Spassky |
 | 0-1 | 24 | 1960 | Mar del Plata | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 45. J L Alvarez del Monte vs Letelier |
| 1-0 | 53 | 1960 | Mar del Plata | A87 Dutch, Leningrad, Main Variation |
| 46. L Marini vs J L Alvarez del Monte |
| ½-½ | 20 | 1960 | Mar del Plata | A16 English |
| 47. J L Alvarez del Monte vs B Wexler |
| ½-½ | 42 | 1960 | Mar del Plata | D70 Neo-Grunfeld Defense |
| 48. Fischer vs J L Alvarez del Monte |
| 1-0 | 37 | 1960 | Mar del Plata | C85 Ruy Lopez, Exchange Variation Doubly Deferred (DERLD) |
| 49. J L Alvarez del Monte vs O Gadia |
| 0-1 | 39 | 1960 | Mar del Plata | A07 King's Indian Attack |
| 50. J Saadi vs J L Alvarez del Monte |
| 0-1 | 42 | 1960 | Mar del Plata | A16 English |
Kibitzing
