| Jul 19, 2025 | Krallis | 1–0 | Tsamtsouris | Round 1: Krallis, Christos - Tsamtsouris, Efthymios | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| Jul 3, 2025 | Tsamtsouris | ½–½ | Koutlas | Round 1: Tsamtsouris, Efthymios - Koutlas, Nikolaos | Queen's Gambit Declined | |
| Apr 28, 2025 | Tsamtsouris | 1–0 | Proutsalis | Round 9: Tsamtsouris, Efthymios - Proutsalis, Marios Alexandros | King's Indian Attack | |
| Apr 27, 2025 | Soukarie | ½–½ | Tsamtsouris | Round 8: Soukarie, Zorz - Tsamtsouris, Efthymios | French Defense: Tarrasch Variation, Morozevich Variation | |
| Apr 26, 2025 | Tsamtsouris | 1–0 | Alepoudeas | Round 7: Tsamtsouris, Efthymios - Alepoudeas, Stylianos | King's Indian Defense: Semi-Averbakh System | |
| Apr 25, 2025 | Tsamtsouris | 1–0 | Misthos | Round 5: Tsamtsouris, Efthymios - Misthos, Alexandros | Rubinstein Opening: Bogoljubow Defense | |
| Apr 25, 2025 | Vassis | 1–0 | Tsamtsouris | Round 6: Vassis, Anastasios - Tsamtsouris, Efthymios | French Defense: Advance Variation, Wade Variation | |
| Apr 24, 2025 | Tsamtsouris | 1–0 | Tampakis | Round 4: Tsamtsouris, Efthymios - Tampakis, Vasileios | Nimzo-Indian Defense | |
| Apr 23, 2025 | Fragkos | 1–0 | Tsamtsouris | Round 2: Fragkos, Vasileios - Tsamtsouris, Efthymios | Bird Opening | |
| Apr 23, 2025 | Moysidis | ½–½ | Tsamtsouris | Round 3: Moysidis, Anastasios - Tsamtsouris, Efthymios | Queen's Gambit Declined: Queen's Knight Variation | |
| Jan 8, 2025 | Ouzounis | 1–0 | Tsamtsouris | Round 9: Ouzounis, Konstantinos Kyr - Tsamtsouris, Efthymios | King's Indian Defense: Fianchetto Variation, Uhlmann-Szabo System | |
| Jan 7, 2025 | Tsamtsouris | ½–½ | Seretis | Round 8: Tsamtsouris, Efthymios - Seretis, Nikolaos G | Rubinstein Opening | |
| Jan 6, 2025 | Karakotsios | ½–½ | Tsamtsouris | Round 7: Karakotsios, Konstantinos - Tsamtsouris, Efthymios | Queen's Gambit Declined: Queen's Knight Variation | |
| Jan 5, 2025 | Tsamtsouris | ½–½ | Christodoulou | Round 6: Tsamtsouris, Efthymios - Christodoulou, Georgia | Zukertort Opening: Old Indian Attack | |
| Jan 5, 2025 | Skodras | ½–½ | Tsamtsouris | Round 5: Skodras, Marios Konstantinos - Tsamtsouris, Efthymios | Scandinavian Defense: Gubinsky-Melts Defense | |
| Jan 4, 2025 | Tsamtsouris | 1–0 | Petkakis | Round 4: Tsamtsouris, Efthymios - Petkakis, Odysseas | Queen's Pawn Game: Colle System | |
| Jan 3, 2025 | Tsamtsouris | 0–1 | Papaioannou | Round 2: Tsamtsouris, Efthymios - Papaioannou, Dimitrios | Neo-Grünfeld Defense: Classical Variation, Polgar Variation | |
| Jan 3, 2025 | Mitsopoulos | ½–½ | Tsamtsouris | Round 3: Mitsopoulos, Ioannis - Tsamtsouris, Efthymios | Pirc Defense | |
| Jan 2, 2025 | Tsavlakidis | 0–1 | Tsamtsouris | Round 1: Tsavlakidis, Leonidas - Tsamtsouris, Efthymios | Pirc Defense: Austrian Attack, Unzicker Attack, Bronstein Variation | |
| Jul 11, 2024 | Tsamtsouris | ½–½ | Kassios | Round 1: Tsamtsouris, Efthymios - Kassios, Dimitrios | Tarrasch Defense: Schara Gambit | |
| Jun 28, 2024 | Nakitsas | ½–½ | Tsamtsouris | Round 9: Nakitsas, Stergios - Tsamtsouris, Efthymios | Pirc Defense: Classical Variation, Quiet System, Chigorin Line | |
| Jun 27, 2024 | Tsamtsouris | 1–0 | Agiakatsikas | Round 8: Tsamtsouris, Efthymios - Agiakatsikas, Konstantinos | Tarrasch Defense: Schara Gambit | |
| Jun 26, 2024 | Giannoulis | 1–0 | Tsamtsouris | Round 7: Giannoulis, Grigorios - Tsamtsouris, Efthymios | Pirc Defense | |
| Jun 25, 2024 | Tsamtsouris | 1–0 | Theodoroglakis | Round 6: Tsamtsouris, Efthymios - Theodoroglakis, Ioannis | Queen's Pawn Game: Colle System | |
| Jun 25, 2024 | Chatzipavlou | 0–1 | Tsamtsouris | Round 5: Chatzipavlou, Odysseas - Tsamtsouris, Efthymios | Pirc Defense | |
| Jun 24, 2024 | Tsamtsouris | 0–1 | Chalkias | Round 4: Tsamtsouris, Efthymios - Chalkias, Michail Panagiotis | King's Indian Defense: Kramer Variation | |
| Jun 23, 2024 | Tzortzatos | 1–0 | Tsamtsouris | Round 3: Tzortzatos, Dimosthenis Panagiot - Tsamtsouris, Efthymios | Philidor Defense: Exchange Variation | |
| Jun 23, 2024 | Tsamtsouris | ½–½ | Triantafyllakis | Round 2: Tsamtsouris, Efthymios - Triantafyllakis, Dimitrios | Nimzo-Indian Defense | |
| Jun 22, 2024 | Maragkozidis | 0–1 | Tsamtsouris | Round 1: Maragkozidis, Anastasios Ioannis - Tsamtsouris, Efthymios | Indian Defense: Wade-Tartakower Defense | |
| Aug 4, 2024 | Alpaslan | 1–0 | Tsamtsouris | Round 8: Alpaslan, Utku - Tsamtsouris, Efthymios | Pirc Defense: Austrian Attack, Unzicker Attack | |
| Aug 3, 2024 | Karanikas | 0–1 | Tsamtsouris | Round 7: Karanikas, Harilaos - Tsamtsouris, Efthymios | Pirc Defense | |
| Aug 2, 2024 | Tsamtsouris | 1–0 | Merkouropoulos | Round 6: Tsamtsouris, Efthymios - Merkouropoulos, Dionysios | Queen's Pawn Game: Colle System | |
