| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. M Sisniega vs R Vera |
| 0-1 | 41 | 1977 | World Junior Championship | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 52. P Pazos Gambarrotti vs M Sisniega |
| 0-1 | 27 | 1977 | World Junior Championship | B45 Sicilian, Taimanov |
| 53. A Yusupov vs M Sisniega |
| 1-0 | 42 | 1977 | World Junior Championship | A05 Reti Opening |
| 54. A Zapata vs M Sisniega |
| 0-1 | 56 | 1977 | World Junior Championship | B45 Sicilian, Taimanov |
| 55. M Sisniega vs H Janssen |
| 1-0 | 41 | 1977 | World Junior Championship | A05 Reti Opening |
| 56. M Sisniega vs S Skembris |
| 0-1 | 70 | 1977 | World Junior Championship | B30 Sicilian |
| 57. P Iten vs M Sisniega |
| 0-1 | 39 | 1977 | World Junior Championship | B30 Sicilian |
| 58. S Adzic vs M Sisniega |
| 0-1 | 57 | 1977 | Yugoslavia | C05 French, Tarrasch |
| 59. M Sisniega vs H Morales Moreno |
| ½-½ | 40 | 1978 | Mexico City | B93 Sicilian, Najdorf, 6.f4 |
| 60. W de Winter Gallegos vs M Sisniega |
| 0-1 | 45 | 1978 | Mexico City | A21 English |
| 61. J E Armas Gutierrez vs M Sisniega |
| 0-1 | 26 | 1978 | Mexico City | A36 English |
| 62. G Lebredo Zaragoitia vs M Sisniega |
| ½-½ | 27 | 1978 | Mexico City | A15 English |
| 63. M Sisniega vs A Anguiano |
| 1-0 | 36 | 1978 | Mexico City | A30 English, Symmetrical |
| 64. M Sisniega vs J Boudy Bueno |
| 1-0 | 30 | 1978 | Mexico City | E66 King's Indian, Fianchetto, Yugoslav Panno |
| 65. J C Fernandez Gonzalez vs M Sisniega |
| 1-0 | 32 | 1978 | Mexico City | C00 French Defense |
| 66. M Sisniega vs Shamkovich |
| ½-½ | 10 | 1978 | Mexico City | A16 English |
| 67. M Sisniega vs J Fedorowicz |
 | 0-1 | 31 | 1978 | Mexico City | B06 Robatsch |
| 68. M Sisniega vs K Frey Beckman |
| ½-½ | 41 | 1978 | Mexico City | C66 Ruy Lopez |
| 69. A Acevedo Milan vs M Sisniega |
| 1-0 | 43 | 1978 | Mexico City | A33 English, Symmetrical |
| 70. J F Villarreal Felix vs M Sisniega |
| 1-0 | 34 | 1978 | Mexico City | B25 Sicilian, Closed |
| 71. M Campos Lopez vs M Sisniega |
| 1-0 | 46 | 1978 | Mexico City | B33 Sicilian |
| 72. M Sisniega vs C Van Tilbury |
| 0-1 | 48 | 1978 | Ibarra Zonal | B53 Sicilian |
| 73. M Sisniega vs M Velasquez |
| 1-0 | 34 | 1978 | World Youth U26 Team Championship qual-5 | E69 King's Indian, Fianchetto, Classical Main line |
| 74. C Braga vs M Sisniega |
| 0-1 | 39 | 1978 | World Youth U26 Team Championship qual-5 | A06 Reti Opening |
| 75. G Garcia vs M Sisniega |
| 0-1 | 39 | 1978 | World Youth U26 Team Championship Final-A | C12 French, McCutcheon |
Kibitzing
