| Feb 17, 2026 | Vieira | 1–0 | Fabre | I IRT STD U2400 – CX Maringá 2026 | Italian Game: Evans Gambit, Laroche Variation | |
| Feb 16, 2026 | Ramazzotte | ½–½ | Vieira | I IRT STD U2400 – CX Maringá 2026 | Italian Game: Evans Gambit, Anderssen Variation | |
| Feb 16, 2026 | Monteiro | 1–0 | Vieira | I IRT STD U2400 – CX Maringá 2026 | King's Indian Defense: Fianchetto Variation, Hungarian Variation | |
| Feb 15, 2026 | Vieira | 1–0 | Cavalcante | I IRT STD U2400 – CX Maringá 2026 | Italian Game: Giuoco Pianissimo | |
| Feb 15, 2026 | Lukachewski | 0–1 | Vieira | I IRT STD U2400 – CX Maringá 2026 | King's Indian Defense | |
| Feb 14, 2026 | Vieira | 0–1 | Ramazzotte | I IRT STD U2400 – CX Maringá 2026 | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Feb 14, 2026 | Ogawa | 0–1 | Vieira | I IRT STD U2400 – CX Maringá 2026 | Center Game: Paulsen Attack Variation | |
| Jan 23, 2026 | Medeiros | 1–0 | Vieira | BCS - Circuito Palas Atena Veloso | Trompowsky Attack | |
| Jan 23, 2026 | Vieira | 1–0 | Vicenzi | BCS - Circuito Palas Atena Veloso | Sicilian Defense: Alapin Variation | |
| Jan 23, 2026 | Queiroz | 0–1 | Vieira | BCS - Circuito Palas Atena Veloso | King's Gambit Accepted: Gaga Gambit | |
| Jan 23, 2026 | Vieira | 0–1 | Monteiro | BCS - Circuito Palas Atena Veloso | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Jan 23, 2026 | Jimenez Salas | 1–0 | Vieira | BCS - Circuito Palas Atena Veloso | Scotch Game: Potter Variation | |
| Jan 23, 2026 | Vieira | 1–0 | Spinola | BCS - Circuito Palas Atena Veloso | Italian Game: Two Knights Defense, Fried Liver Attack | |
| Dec 31, 2025 | Takahara | 0–1 | Vieira | Round 9: Takahara, Fabio - Vieira, Luana Saddi | Scotch Game: Scotch Gambit, Sarratt Variation | |
| Dec 30, 2025 | Vieira | ½–½ | Dos Reis | Round 7: Vieira, Luana Saddi - Dos Reis, Caique Mendes | Italian Game: Classical Variation, Giuoco Pianissimo, with a5 | |
| Dec 29, 2025 | De Souza | 1–0 | Vieira | Round 5: De Souza, Samuel B Ornelas - Vieira, Luana Saddi | King's Indian Defense: Fianchetto Variation, Classical Main Line | |
| Dec 28, 2025 | Vieira | 1–0 | Serra | Round 4: Vieira, Luana Saddi - Serra, Alberto Gadelha | Caro-Kann Defense: Advance Variation, Short Variation | |
| Dec 27, 2025 | Muniz | 1–0 | Vieira | Round 3: Muniz, Henrique Rocha - Vieira, Luana Saddi | English Opening: Anglo-Indian Defense, Queen's Knight Variation | |
| Dec 27, 2025 | Vieira | 1–0 | Rodrigues | Round 2: Vieira, Luana Saddi - Rodrigues, Jhonatan Gilberto Lima | Caro-Kann Defense: Advance Variation, Short Variation | |
| Dec 27, 2025 | Tsuboi | 1–0 | Vieira | Round 1: Tsuboi, Edson Kenji - Vieira, Luana Saddi | English Opening: Anglo-Indian Defense | |
| Jan 25, 2025 | Abregu | 0–1 | Vieira | Round 6: Abregu, Sofia Balbino de Barros - Vieira, Luana Saddi | Italian Game: Giuoco Pianissimo, Normal | |
| Jan 25, 2025 | Vieira | ½–½ | Rolim | Round 5: Vieira, Luana Saddi - Rolim, Claudia Vitoria Ferreira | French Defense: Advance Variation, Paulsen Attack | |
| Jan 25, 2025 | Da Costa | 1–0 | Vieira | Round 4: Da Costa, Evelyn Maria Fuck - Vieira, Luana Saddi | King's Indian Defense: Normal Variation | |
| Jan 25, 2025 | Vieira | 1–0 | De Oliveira | Round 3: Vieira, Luana Saddi - De Oliveira, Laura Silva | Italian Game: Paris Defense | |
| Jan 25, 2025 | Cordero | 1–0 | Vieira | Round 2: Cordero, Daniela - Vieira, Luana Saddi | King's Indian Defense: Normal Variation, King's Knight Variation | |
| Jan 25, 2025 | Vieira | 1–0 | Aghata Karolainny De Loes | Round 1: Vieira, Luana Saddi - Aghata Karolainny De Loes | Italian Game: Two Knights Defense, Knight Attack, Normal Variation | |
| Aug 28, 2024 | Vieira | 0–1 | Andriska | IV Niterói Chess Open 2024 - STD | Four Knights Game: Gunsberg Variation | |
