| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 76. M Sisniega vs A Beliavsky |
| ½-½ | 26 | 1978 | World Youth U26 Team Championship Final-A | A13 English |
| 77. M Sisniega vs V Ravikumar |
| 1-0 | 39 | 1978 | World Junior Championship | A30 English, Symmetrical |
| 78. F X Mateu vs M Sisniega |
| 1-0 | 32 | 1978 | World Junior Championship | D13 Queen's Gambit Declined Slav, Exchange Variation |
| 79. Dolmatov vs M Sisniega |
| ½-½ | 34 | 1978 | World Junior Championship | C04 French, Tarrasch, Guimard Main line |
| 80. M Sisniega vs C M Bjork |
| 0-1 | 28 | 1978 | World Junior Championship | E67 King's Indian, Fianchetto |
| 81. M Sisniega vs A Khakpoor |
| 1-0 | 66 | 1978 | World Junior Championship | A34 English, Symmetrical |
| 82. M Sisniega vs N Ristic |
| 1-0 | 24 | 1978 | World Junior Championship | A34 English, Symmetrical |
| 83. M Sisniega vs A Pacis |
| 1-0 | 90 | 1978 | World Junior Championship | A38 English, Symmetrical |
| 84. I Kourkounakis vs M Sisniega |
| 0-1 | 28 | 1978 | World Junior Championship | A47 Queen's Indian |
| 85. H Cordes vs M Sisniega |
| ½-½ | 73 | 1978 | World Junior Championship | A10 English |
| 86. J Soares Masculo vs M Sisniega |
| 0-1 | 38 | 1978 | World Junior Championship | A06 Reti Opening |
| 87. E Swoboda vs M Sisniega |
| ½-½ | 41 | 1978 | World Junior Championship | A10 English |
| 88. J O Fries-Nielsen vs M Sisniega |
| 1-0 | 41 | 1978 | World Junior Championship | A04 Reti Opening |
| 89. M Sisniega vs T Karolyi |
| ½-½ | 67 | 1978 | World Junior Championship | A14 English |
| 90. M Sisniega vs C Lee |
| 1-0 | 46 | 1978 | Buenos Aires Olympiad | B14 Caro-Kann, Panov-Botvinnik Attack |
| 91. S Hamann vs M Sisniega |
| ½-½ | 86 | 1978 | Buenos Aires Olympiad | C05 French, Tarrasch |
| 92. M Sisniega vs W Hug |
| ½-½ | 69 | 1978 | Buenos Aires Olympiad | A10 English |
| 93. M Sisniega vs J E Ostos |
| 0-1 | 44 | 1978 | Buenos Aires Olympiad | A16 English |
| 94. M Sisniega vs Z Franco Ocampos |
| 0-1 | 51 | 1978 | Buenos Aires Olympiad | B30 Sicilian |
| 95. O Rodriguez Vargas vs M Sisniega |
| 1-0 | 41 | 1978 | Buenos Aires Olympiad | E44 Nimzo-Indian, Fischer Variation, 5.Ne2 |
| 96. M Sisniega vs A Delgado Malagon |
| 0-1 | 67 | 1978 | Buenos Aires Olympiad | A27 English, Three Knights System |
| 97. M Sisniega vs T Wibe |
| ½-½ | 40 | 1978 | Buenos Aires Olympiad | E69 King's Indian, Fianchetto, Classical Main line |
| 98. M Sisniega vs G Garcia |
| ½-½ | 44 | 1978 | Buenos Aires Olympiad | A29 English, Four Knights, Kingside Fianchetto |
| 99. G Sigurjonsson vs M Sisniega |
| ½-½ | 22 | 1978 | Buenos Aires Olympiad | E39 Nimzo-Indian, Classical, Pirc Variation |
| 100. M Sisniega vs L Christiansen |
| 0-1 | 39 | 1979 | Capablanca Memorial | B10 Caro-Kann |
Kibitzing
