| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 76. A Graf vs M Olszewski |
| ½-½ | 17 |
2009 |
Cappelle la Grande | A15 English |
| 77. T Nyback vs M Olszewski |
 | 0-1 | 36 |
2009 |
Najdorf Memorial | E04 Catalan, Open, 5.Nf3 |
| 78. M Vachier Lagrave vs M Olszewski |
| 1-0 | 36 |
2009 |
48th World Junior Championship | B97 Sicilian, Najdorf |
| 79. M Olszewski vs K Urban |
| 1-0 | 42 |
2009 |
24th Voivoda Cup | B12 Caro-Kann Defense |
| 80. A Shneider vs M Olszewski |
| ½-½ | 6 |
2009 |
Cappelle la Grande | D44 Queen's Gambit Declined Semi-Slav |
| 81. Krasenkow vs M Olszewski |
| ½-½ | 37 |
2009 |
Najdorf Memorial | E10 Queen's Pawn Game |
| 82. O Wieczorek vs M Olszewski |
| 0-1 | 57 |
2009 |
24th Voivoda Cup | B56 Sicilian |
| 83. M Olszewski vs S Zhigalko |
| 0-1 | 41 |
2009 |
48th World Junior Championship | D11 Queen's Gambit Declined Slav |
| 84. M Olszewski vs P Bobras |
| 1-0 | 51 |
2009 |
Cappelle la Grande | D45 Queen's Gambit Declined Semi-Slav |
| 85. M Olszewski vs Sasikiran |
| 0-1 | 53 |
2009 |
Najdorf Memorial | D82 Grunfeld, 4.Bf4 |
| 86. M Olszewski vs M Rodshtein |
| ½-½ | 32 |
2009 |
48th World Junior Championship | B12 Caro-Kann Defense |
| 87. A Dobrowolski vs M Olszewski |
| 1-0 | 84 |
2009 |
24th Voivoda Cup | B56 Sicilian |
| 88. M Olszewski vs A Bachmann |
| 1-0 | 29 |
2009 |
Cappelle la Grande | D27 Queen's Gambit Accepted, Classical |
| 89. M Olszewski vs B Socko |
| ½-½ | 54 |
2009 |
Najdorf Memorial | D32 Queen's Gambit Declined, Tarrasch |
| 90. M Grabarczyk vs M Olszewski |
| 0-1 | 30 |
2009 |
24th Voivoda Cup | E00 Queen's Pawn Game |
| 91. M Leon Hoyos vs M Olszewski |
| 0-1 | 50 |
2009 |
48th World Junior Championship | C55 Two Knights Defense |
| 92. J Groz vs M Olszewski |
| 0-1 | 37 |
2009 |
Cappelle la Grande | B22 Sicilian, Alapin |
| 93. M Olszewski vs Macieja |
| ½-½ | 32 |
2009 |
Najdorf Memorial | E36 Nimzo-Indian, Classical |
| 94. J Cori vs M Olszewski |
| 0-1 | 31 |
2009 |
48th World Junior Championship | B92 Sicilian, Najdorf, Opocensky Variation |
| 95. M Olszewski vs K Piorun |
| 1-0 | 51 |
2009 |
24th Voivoda Cup | E77 King's Indian |
| 96. M Olszewski vs G Margvelashvili |
| 1-0 | 23 |
2009 |
48th World Junior Championship | E10 Queen's Pawn Game |
| 97. E Gasanov vs M Olszewski |
| ½-½ | 44 |
2009 |
Cappelle la Grande | E00 Queen's Pawn Game |
| 98. A Aleksandrov vs M Olszewski |
| 1-0 | 36 |
2009 |
Najdorf Memorial | D80 Grunfeld |
