| Jun 27, 2026 | Siska | 0–1 | Mersin | Round 11: Siska, Samuel - Mersin, Sencer | Queen's Pawn Game: Colle System | |
| Jun 26, 2026 | Badescu | 1–0 | Siska | Round 10: Badescu, Matei-Andrei - Siska, Samuel | Sicilian Defense: Kan Variation, Knight Variation | |
| Jun 25, 2026 | Schimming | 0–1 | Siska | Round 9: Schimming, Wilhelm - Siska, Samuel | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6 | |
| Jun 24, 2026 | Siska | 1–0 | Dalaloyan | Round 8: Siska, Samuel - Dalaloyan, Davit | King's Indian Defense: Fianchetto Variation, Yugoslav System | |
| Jun 23, 2026 | Saifiev | 1–0 | Siska | FIDE World Cadets Cup, O10 / B1-54 | French Defense: Advance Variation, Milner-Barry Gambit | |
| Jun 21, 2026 | Siska | 1–0 | Saleh | Round 6: Siska, Samuel - Saleh,Iyed | Queen's Pawn Game: Colle System | |
| Jun 20, 2026 | Siska | 0–1 | Yunker | Round 5: Siska, Samuel - Yunker, German | Queen's Pawn Game: Krause Variation | |
| Jun 19, 2026 | Titov | ½–½ | Siska | Round 4: Titov, Evgeny - Siska, Samuel | Queen's Pawn Game: Colle System | |
| Jun 18, 2026 | Mangasaryan | ½–½ | Siska | Round 3: Mangasaryan, Arsen Z. - Siska, Samuel | King's Indian Attack | |
| Jun 17, 2026 | Siska | 0–1 | Ranganathan | Round 2: Siska, Samuel - Ranganathan, Aadith | Queen's Pawn Game: Stonewall Attack | |
| Jun 16, 2026 | Siska | 1–0 | Sodbayar | Round 1: Siska, Samuel - Sodbayar, Irmuun | Queen's Pawn Game: London System, with e6 | |
| Aug 31, 2024 | Kapitanski | 1–0 | Siska | EYCC 2024 - O08 | Pirc Defense: Classical Variation, Schlechter Variation | |
| Aug 22, 2024 | Hu | 1–0 | Siska | EYCC 2024 - O08 | French Defense: Advance Variation, Lputian Variation | |
| — | Siska | 1–0 | Zlamal | EUYCC 2024 - U10 | English Opening: King's English Variation, Two Knights Variation, Keres Variation | |
| — | Siska | ½–½ | Skouroupathis | EUYCC 2025 - U10 | Indian Defense: Anti-Nimzo-Indian | |
| — | Siska | 0–1 | Grigorescu | EUYCC 2025 - U10 | Queen's Pawn Game: Zukertort Variation | |
| — | Siska | 0–1 | Szczurek | EUYCC 2025 - U10 | Queen's Pawn Game: Colle System | |
| — | Siska | 0–1 | Hornacek | EUYCC 2025 - U10 | Queen's Pawn Game: Colle System | |
| — | Zinovjev | 0–1 | Siska | EUYCC 2025 - U10 | King's Indian Defense: Normal Variation, Rare Defenses | |
| — | Sirbu | 1–0 | Siska | EUYCC 2025 - U10 | Horwitz Defense | |
| — | Plancarova | 0–1 | Siska | EUYCC 2025 - U10 | Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation | |
| — | Karcz | 0–1 | Siska | EUYCC 2025 - U10 | French Defense: Advance Variation, Milner-Barry Gambit | |
