| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 76. L Costa vs J Bellon Lopez |
| ½-½ | 44 | 2024 | Rilton Cup 2024/25 | B43 Sicilian, Kan, 5.Nc3 |
| 77. Kush Bhagat vs L Costa |
| 0-1 | 37 | 2024 | Rilton Cup 2024/25 | D47 Queen's Gambit Declined Semi-Slav |
| 78. L Costa vs A Falkevall |
| 1-0 | 69 | 2024 | Rilton Cup 2024/25 | B33 Sicilian |
| 79. N Schmider vs L Costa |
| 0-1 | 64 | 2024 | Rilton Cup 2024/25 | B68 Sicilian, Richter-Rauzer Attack, 7...a6 Defense, 9...Be7 |
| 80. L Costa vs B Bilovil |
| ½-½ | 49 | 2024 | Rilton Cup 2024/25 | C02 French, Advance |
| 81. H H Celik vs L Costa |
| ½-½ | 34 | 2025 | Rilton Cup 2024/25 | D45 Queen's Gambit Declined Semi-Slav |
| 82. L Costa vs K Kucuksari |
| 1-0 | 69 | 2025 | Rilton Cup 2024/25 | B20 Sicilian |
| 83. B Heberla vs L Costa |
| ½-½ | 31 | 2025 | Rilton Cup 2024/25 | D45 Queen's Gambit Declined Semi-Slav |
| 84. V Dinstuhl vs L Costa |
| ½-½ | 69 | 2025 | Bundesliga 2024/25 | A01 Nimzovich-Larsen Attack |
| 85. L Costa vs A Kovacevic |
| ½-½ | 60 | 2025 | Bundesliga 2024/25 | B43 Sicilian, Kan, 5.Nc3 |
| 86. L Costa vs N Wachinger |
| ½-½ | 45 | 2025 | Bundesliga 2024/25 | B90 Sicilian, Najdorf |
| 87. M Socko vs L Costa |
| ½-½ | 41 | 2025 | Bundesliga 2024/25 | C45 Scotch Game |
| 88. L Costa vs C Liu |
| ½-½ | 50 | 2025 | World Junior Championship | B33 Sicilian |
| 89. V Halynyazov vs L Costa |
| ½-½ | 60 | 2025 | World Junior Championship | D00 Queen's Pawn Game |
| 90. L Costa vs A Hommadov |
| 1-0 | 50 | 2025 | World Junior Championship | B30 Sicilian |
| 91. Z J Wong vs L Costa |
| 0-1 | 42 | 2025 | World Junior Championship | D44 Queen's Gambit Declined Semi-Slav |
| 92. L Costa vs K Begmuratov |
| 1-0 | 77 | 2025 | World Junior Championship | C67 Ruy Lopez |
| 93. L Costa vs B Agasarov |
| ½-½ | 53 | 2025 | World Junior Championship | C50 Giuoco Piano |
| 94. G Amartuvshin vs L Costa |
| 0-1 | 42 | 2025 | World Junior Championship | D35 Queen's Gambit Declined |
| 95. Y Meng vs L Costa |
| ½-½ | 34 | 2025 | World Junior Championship | C53 Giuoco Piano |
| 96. L Costa vs Dau Khuong Duy |
| ½-½ | 44 | 2025 | World Junior Championship | B28 Sicilian, O'Kelly Variation |
| 97. S Aswath vs L Costa |
| 0-1 | 50 | 2025 | World Junior Championship | A62 Benoni, Fianchetto Variation |
| 98. L Costa vs E Amar |
| 0-1 | 35 | 2025 | World Junior Championship | B12 Caro-Kann Defense |
| 99. L Costa vs L Johansson |
| 1-0 | 60 | 2025 | Bundesliga 2024/25 | C02 French, Advance |
| 100. D Popovic vs L Costa |
| 0-1 | 37 | 2025 | Bundesliga 2024/25 | A04 Reti Opening |
Kibitzing
