| Game | Result | Opening | Date |
|---|---|---|---|
| Christodoulaki, Antonia (2120) – Costa, Tomas Pereira (1967) | 1-0 | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | 2026-08-26 |
| Costa, Tomas Pereira (1966) – Le Pen, Steven (2139) | 0-1 | Sicilian Defense: Alapin Variation, Smith-Morra Declined | 2026-08-03 |
| Monteiro, Paulo Alexandre G (2226) – Costa, Tomas Pereira (1890) | 1-0 | Queen's Gambit Declined: Charousek Variation | 2026-08-01 |
| Costa, Tomas Pereira (1890) – Ribeiro, Rodrigo (2153) | 1/2-1/2 | Sicilian Defense: Alapin Variation, Smith-Morra Declined | 2026-08-01 |
| Veleirinho, Tomas Carvalho (1963) – Costa, Tomas Pereira (1890) | 1/2-1/2 | Italian Game: Classical Variation, Giuoco Pianissimo | 2026-07-24 |
| Costa, Tomas Pereira (1890) – Padeiro, Jose (2140) | 1/2-1/2 | French Defense: Rubinstein Variation, Blackburne Defense | 2026-07-23 |
| Costa, Tomas Pereira (1890) – Gorodetzky, David (2498) | 0-1 | Caro-Kann Defense: Tartakower Variation | 2026-07-23 |
| Pinho, Paulo (2102) – Costa, Tomas Pereira (1890) | 0-1 | Queen's Pawn Game: Zukertort Variation | 2026-07-22 |
| Bittner, Titus (2085) – Costa, Tomas Pereira (1890) | 1/2-1/2 | Four Knights Game: Spanish Variation | 2026-07-21 |
| Costa, Tomas Pereira (1890) – Fidalgo, Andre Neves (2173) | 1-0 | Ruy Lopez: Morphy Defense, Anderssen Variation | 2026-07-21 |
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