| Apr 20, 2026 | Tzimas | 1–0 | Alexandrakis | Round 9: Tzimas, Konstantinos - Alexandrakis, Venizelos | Sicilian Defense: Moscow Variation, Sokolsky Variation | |
| Apr 19, 2026 | Stergatos | 0–1 | Tzimas | Round 8: Stergatos, Dimitrios - Tzimas, Konstantinos | Neo-Grünfeld Defense: Exchange Variation | |
| Apr 18, 2026 | Tzimas | 0–1 | Kountrias | Round 6: Tzimas, Konstantinos - Kountrias, Kosmas Ioannis | King's Indian Defense: Fianchetto Variation, Panno Variation | |
| Apr 15, 2026 | Tzimas | 0–1 | Seretis | Round 2: Tzimas, Konstantinos - Seretis, Anastasios | Scotch Game: Potter Variation | |
| Nov 29, 2025 | Tzimas | ½–½ | Asvestopoulos | Round 5: Tzimas, Konstantinos - Asvestopoulos, Sergios | Sicilian Defense: Smith-Morra Gambit | |
| Nov 28, 2025 | Tzimas | ½–½ | Koutroupas | Round 2: Tzimas, Konstantinos - Koutroupas, Emmanouil | Alekhine Defense: Modern Variation, Flohr Variation | |
| Nov 27, 2025 | Fraidakis | 0–1 | Tzimas | Round 1: Fraidakis, Matthaios Ioannis - Tzimas, Konstantinos | English Opening: Agincourt Defense, Tarrasch Defense | |
| Jul 7, 2025 | Anagnostopoulos | 1–0 | Tzimas | Round 2: Anagnostopoulos, Panagiotis - Tzimas, Konstantinos | Sicilian Defense: Najdorf Variation | |
| Jun 28, 2024 | Tzimas | 0–1 | Papakyriakou | Round 9: Tzimas, Konstantinos - Papakyriakou, Petros | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| Jun 27, 2024 | Manolopoulos | ½–½ | Tzimas | Round 8: Manolopoulos, Christos - Tzimas, Konstantinos | Sicilian Defense: Moscow Variation, Main Line | |
| Jun 26, 2024 | Tzimas | ½–½ | Misios | Round 7: Tzimas, Konstantinos - Misios, Konstantinos | English Opening: Symmetrical Variation | |
| Jun 25, 2024 | Oikonomopoulos | 1–0 | Tzimas | Round 6: Oikonomopoulos, Filippos - Tzimas, Konstantinos | Sicilian Defense: Najdorf Variation | |
| Jun 25, 2024 | Latos | 0–1 | Tzimas | Round 5: Latos, Dimitrios - Tzimas, Konstantinos | Sicilian Defense: Najdorf Variation, Lipnitsky Attack | |
| Jun 24, 2024 | Tzimas | 1–0 | Ioannidis | Round 4: Tzimas, Konstantinos - Ioannidis, Konstantinos I | Caro-Kann Defense: Panov Attack, Modern Defense | |
| Jun 23, 2024 | Tzimas | 1–0 | Diakoloukas | Round 3: Tzimas, Konstantinos - Diakoloukas, Theodosios | Scotch Game: Scotch Gambit, London Defense | |
| Jun 23, 2024 | Chompas | 1–0 | Tzimas | Round 2: Chompas, Vasileios - Tzimas, Konstantinos | Sicilian Defense: Moscow Variation, Main Line | |
| Nov 30, 2024 | La Rokka | 0–1 | Tzimas | Round 4: La Rokka, Leonarnto - Tzimas, Konstantinos | Sicilian Defense: Moscow Variation, Sokolsky Variation | |
| Nov 30, 2024 | Ntrekis | 0–1 | Tzimas | Round 5: Ntrekis, Minas - Tzimas, Konstantinos | Sicilian Defense: Najdorf Variation, English Attack | |
| Nov 29, 2024 | Toumpakaris | 1–0 | Tzimas | Round 2: Toumpakaris, Grigorios Emmanouil - Tzimas, Konstantinos | Sicilian Defense: Alapin Variation | |
| Nov 28, 2024 | Tzimas | 1–0 | Ieromonachos | Round 1: Tzimas, Konstantinos - Ieromonachos, Dimitrios Nektarios | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Aug 13, 2022 | Tzimas | 0–1 | Margaritis | National Greek Team Championship | Sicilian Defense: Najdorf Variation, English Attack | |
