| Apr 15, 2026 | Paterakis | 1–0 | Kazakis | Round 1: Paterakis, Panagiotis Emm - Kazakis, Mattheos Konstantinos | Queen's Pawn Game | |
| Nov 30, 2025 | Kazakis | 1–0 | Nikitakis | Round 6: Kazakis, Mattheos Konstantinos - Nikitakis, Michail | Scotch Game: Scotch Gambit, Advance Variation | |
| Nov 29, 2025 | Koloutsos | 0–1 | Kazakis | Round 5: Koloutsos, Spyridon - Kazakis, Mattheos Konstantinos | Sicilian Defense: Najdorf Variation | |
| Nov 29, 2025 | Lampousakis | 0–1 | Kazakis | Round 4: Lampousakis, Michail - Kazakis, Mattheos Konstantinos | Sicilian Defense: Najdorf Variation | |
| Nov 28, 2025 | Kazakis | 1–0 | Gkadakis | Round 3: Kazakis, Mattheos Konstantinos - Gkadakis, Nikolaos | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Nov 28, 2025 | Megagiannis | 0–1 | Kazakis | Round 2: Megagiannis, Maximos - Kazakis, Mattheos Konstantinos | Sicilian Defense: Najdorf Variation | |
| Nov 27, 2025 | Kazakis | 1–0 | Arampatzis | Round 1: Kazakis, Mattheos Konstantinos - Arampatzis, Christos | Sicilian Defense: Delayed Alapin Variation | |
| Jul 29, 2025 | Aral | 1–0 | Kazakis | Round 3: Aral, Demir - Kazakis, Mattheos Konstantinos | Sicilian Defense: Alapin Variation | |
| Jul 12, 2025 | Kazakis | 1–0 | Bimpikas | Round 9: Kazakis, Mattheos Konstantinos - Bimpikas, Ioannis | Italian Game: Classical Variation, Greco Gambit, Traditional Line | |
| Jul 11, 2025 | Lampos | ½–½ | Kazakis | Round 8: Lampos, Charalampos - Kazakis, Mattheos Konstantinos | Queen's Indian Accelerated | |
| Jul 10, 2025 | Danezis | 0–1 | Kazakis | Round 7: Danezis, Prodromos - Kazakis, Mattheos Konstantinos | Sicilian Defense: O'Kelly Variation, Venice System | |
| Jul 10, 2025 | Kazakis | 1–0 | Papakyriakou | Round 6: Kazakis, Mattheos Konstantinos - Papakyriakou, Petros | Sicilian Defense: Moscow Variation, Main Line | |
| Jul 9, 2025 | Gkadakis | ½–½ | Kazakis | Round 5: Gkadakis, Nikolaos - Kazakis, Mattheos Konstantinos | Sicilian Defense: Closed | |
| Jul 8, 2025 | Kazakis | 1–0 | Alexandrakis | Round 3: Kazakis, Mattheos Konstantinos - Alexandrakis, Venizelos | Sicilian Defense: Moscow Variation, Sokolsky Variation | |
| Jul 7, 2025 | Ladopoulos | 0–1 | Kazakis | Round 2: Ladopoulos, Vasileios - Kazakis, Mattheos Konstantinos | English Opening: King's English Variation | |
| Jul 6, 2025 | Kazakis | 1–0 | Noulis | Round 1: Kazakis, Mattheos Konstantinos - Noulis, Ioannis | Sicilian Defense: Delayed Alapin Variation | |
| Jul 6, 2025 | Kazakis | ½–½ | Ioannidis | Round 4: Kazakis, Mattheos Konstantinos - Ioannidis, Konstantinos I | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Jul 4, 2025 | Rakitzis | ½–½ | Kazakis | Round 7: Rakitzis, Alexanter Emmanouel - Kazakis, Mattheos Konstantinos | Sicilian Defense: O'Kelly Variation, Venice System | |
| Jul 3, 2025 | Kazakis | 1–0 | Bartzos | Round 6: Kazakis, Mattheos Konstantinos - Bartzos, Iasonas | Sicilian Defense: Moscow Variation, Sokolsky Variation | |
| Jul 3, 2025 | Kazakis | 1–0 | Toumpakaris | Round 4: Kazakis, Mattheos Konstantinos - Toumpakaris, Grigorios Emmanouil | Ruy Lopez: Bird Variation | |
| Jul 3, 2025 | Gkadakis | 1–0 | Kazakis | Round 3: Gkadakis, Nikolaos - Kazakis, Mattheos Konstantinos | Sicilian Defense: Najdorf Variation | |
| Jul 3, 2025 | Kazakis | 1–0 | Kostoglou | Round 2: Kazakis, Mattheos Konstantinos - Kostoglou, Apostolos | French Defense: Tarrasch Variation, Modern System | |
| Jul 3, 2025 | Alexopoulos | 0–1 | Kazakis | Round 1: Alexopoulos, Filippos - Kazakis, Mattheos Konstantinos | Sicilian Defense: Closed | |
| Jul 3, 2025 | Nteneketzis | ½–½ | Kazakis | Round 5: Nteneketzis, Paraskevas - Kazakis, Mattheos Konstantinos | Sicilian Defense: O'Kelly Variation, Normal System | |
| Jul 10, 2024 | Kazakis | 1–0 | Misios | Greek League 2024 | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Jul 9, 2024 | Skarlas | 1–0 | Kazakis | Greek League 2024 | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| Jul 8, 2024 | Kazakis | 1–0 | Ilias | Greek League 2024 | Sicilian Defense: Moscow Variation, Sokolsky Variation | |
| Jul 7, 2024 | Oikonomopoulos | 1–0 | Kazakis | Greek League 2024 | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Jul 6, 2024 | Kazakis | 1–0 | Rakitzis | Greek League 2024 | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Jul 5, 2024 | Gkougkoustamos Sotirios | 0–1 | Kazakis | Greek League 2024 | Caro-Kann Defense: Panov Attack, Modern Defense | |
| Jul 4, 2024 | Kazakis | 0–1 | Seretis | Greek League 2024 | Sicilian Defense: Delayed Alapin Variation | |
| Jun 28, 2024 | Kazakis | ½–½ | Ioannidis | Round 9: Kazakis, Mattheos Konstantinos - Ioannidis, Konstantinos I | Caro-Kann Defense: Exchange Variation | |
| Jun 27, 2024 | Kiryttopoulos | 1–0 | Kazakis | Round 8: Kiryttopoulos, Ioannis - Kazakis, Mattheos Konstantinos | Caro-Kann Defense: Two Knights Attack | |
| Jun 26, 2024 | Kazakis | 1–0 | Papakyriakou | Round 7: Kazakis, Mattheos Konstantinos - Papakyriakou, Petros | Sicilian Defense: Moscow Variation, Sokolsky Variation | |
| Jun 24, 2024 | Misios | 0–1 | Kazakis | Round 4: Misios, Konstantinos - Kazakis, Mattheos Konstantinos | Caro-Kann Defense: Main Line | |
| Jun 23, 2024 | Michas | 0–1 | Kazakis | Round 2: Michas, Iasonas - Kazakis, Mattheos Konstantinos | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Jun 22, 2024 | Kazakis | 1–0 | Chionidis | Round 1: Kazakis, Mattheos Konstantinos - Chionidis, Charalampos | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Jun 21, 2024 | Anagnostopoulos | ½–½ | Kazakis | Round 6: Anagnostopoulos, Panagiotis - Kazakis, Mattheos Konstantinos | Caro-Kann Defense: Exchange Variation | |
| Jun 21, 2024 | Kazakis | 1–0 | Chompas | Round 5: Kazakis, Mattheos Konstantinos - Chompas, Vasileios | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Jun 21, 2024 | Kazakis | ½–½ | Oikonomopoulos | Round 3: Kazakis, Mattheos Konstantinos - Oikonomopoulos, Filippos | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Dec 1, 2024 | Kazakis | ½–½ | Skodras | Round 6: Kazakis, Mattheos Konstantinos - Skodras, Marios Konstantinos | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Nov 30, 2024 | Angelidis | 0–1 | Kazakis | Round 4: Angelidis, Nikolaos - Kazakis, Mattheos Konstantinos | Caro-Kann Defense: Tartakower Variation | |
| Nov 30, 2024 | Zervas | 0–1 | Kazakis | Round 5: Zervas, Spyridon - Kazakis, Mattheos Konstantinos | Pseudo Queen's Indian Defense | |
| Nov 29, 2024 | Kazakis | 1–0 | Mouselimis | Round 2: Kazakis, Mattheos Konstantinos - Mouselimis, Nikolaos Ikaros | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Nov 29, 2024 | Koutroupas | 0–1 | Kazakis | Round 3: Koutroupas, Emmanouil - Kazakis, Mattheos Konstantinos | Caro-Kann Defense: Advance Variation, Van der Wiel Attack | |
| Nov 28, 2024 | Kiryttopoulos | 1–0 | Kazakis | Round 1: Kiryttopoulos, Ioannis - Kazakis, Mattheos Konstantinos | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Nov 4, 2024 | Kazakis | 1–0 | Zielinski | Round 9: Kazakis, Mattheos Konstantinos - Zielinski, Olgierd | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Nov 3, 2024 | Celik | ½–½ | Kazakis | Round 8: Celik, Berkay - Kazakis, Mattheos Konstantinos | Caro-Kann Defense: Exchange Variation | |
| Oct 29, 2024 | Ng | 1–0 | Kazakis | Round 3: Ng, Chun Hei - Kazakis, Mattheos Konstantinos | Caro-Kann Defense: Two Knights Attack | |
| Oct 28, 2024 | Kazakis | ½–½ | Perez Gonzalez | Round 2: Kazakis, Mattheos Konstantinos - Perez Gonzalez, Daniel | Caro-Kann Defense: Exchange Variation | |
| Sep 6, 2024 | Toliopoulos | 1–0 | Kazakis | Round 8: Toliopoulos, Konstantinos - Kazakis, Mattheos Konstantinos | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Sep 1, 2024 | Kazakis | 0–1 | Triantafilidis | Round 3: Kazakis, Mattheos Konstantinos - Triantafilidis, Mihail | Scandinavian Defense: Gubinsky-Melts Defense | |
| Aug 30, 2024 | Magkalakis | 1–0 | Kazakis | Round 2: Magkalakis, Stefanos - Kazakis, Mattheos Konstantinos | Queen's Gambit Declined: Modern Variation | |
| Aug 30, 2024 | Tzovanis | 0–1 | Kazakis | Round 8: Tzovanis, Anastasios Anagnostis - Kazakis, Mattheos Konstantinos | Zukertort Opening: Reversed Grünfeld | |
| Aug 30, 2024 | Ioannidis | 0–1 | Kazakis | Round 9: Ioannidis, Evgenios - Kazakis, Mattheos Konstantinos | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jul 30, 2024 | Lazaridis-Patsalias | 1–0 | Kazakis | Round 2: Lazaridis-Patsalias, Haralabos - Kazakis, Mattheos Konstantinos | Queen's Gambit Declined: Three Knights Variation | |
| Aug 28, 2023 | Roobol | 1–0 | Kazakis | RHODES International Open SUMMER CUP 2023 | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Aug 27, 2023 | Kazakis | ½–½ | Silva | RHODES International Open SUMMER CUP 2023 | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Aug 24, 2023 | Garsky | 1–0 | Kazakis | RHODES International Open SUMMER CUP 2023 | Caro-Kann Defense: Exchange Variation | |
| Aug 23, 2023 | Kazakis | 1–0 | Pylarinos | Rhodes International Open Summer Cup 2023 | ? | |
| Aug 22, 2023 | Loiacono | 1–0 | Kazakis | Rhodes International Open Summer Cup 2023 | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Aug 21, 2023 | Kazakis | 1–0 | Malamousi | Rhodes International Open Summer Cup 2023 | ? | |
| — | Kazakis | 0–1 | Narva | Round 7: Kazakis, Mattheos Konstantinos - Narva, David | Modern Defense: Pseudo-Austrian Attack | |
| — | Kazakis | ½–½ | Ilcic | Round 5: Kazakis, Mattheos Konstantinos - Ilcic, Aleksa | Bird Opening: Dutch Variation | |
| — | Kazakis | 1–0 | Beniosev | Round 8: Kazakis, Mattheos Konstantinos - Beniosev, Daniel | Sicilian Defense: Delayed Alapin Variation | |
| — | Kazakis | 0–1 | Kukushkin | Round 9: Kazakis, Mattheos Konstantinos - Kukushkin, Ivan | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| — | Kazakis | 1–0 | Todorov | Round 2: Kazakis, Mattheos Konstantinos - Todorov, Nikolay T. | Bird Opening | |
| — | Kazakis | 1–0 | Tretiak | Round 3: Kazakis, Mattheos Konstantinos - Tretiak, Igor | Bird Opening | |
| — | Kazakis | 1–0 | Uzun | Round 6: Kazakis, Mattheos Konstantinos - Uzun, Pavlo | Sicilian Defense: Dragon Variation, Yugoslav Attack | |
| — | Kazakis | 1–0 | Wites | Round 7: Kazakis, Mattheos Konstantinos - Wites, Adam | Caro-Kann Defense: Two Knights Attack | |
| — | Kazakis | 0–1 | Belin | Round 10: Kazakis, Mattheos Konstantinos - Belin, Anton | Sicilian Defense: Najdorf Variation | |
| — | Kazakis | 1–0 | Tretiak | Round 12: Kazakis, Mattheos Konstantinos - Tretiak, Igor | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| — | Kazakis | 1–0 | Belyaletdinov | Round 13: Kazakis, Mattheos Konstantinos - Belyaletdinov, Leonard | Bird Opening | |
| — | Kazakis | 1–0 | Beniosev | Round 15: Kazakis, Mattheos Konstantinos - Beniosev, Daniel | Sicilian Defense: Delayed Alapin Variation | |
| — | Kazakis | 0–1 | Develi | Round 18: Kazakis, Mattheos Konstantinos - Develi, Kemal Cagan | French Defense: Tarrasch Variation, Morozevich Variation | |
| — | Kazakis | 1–0 | Ravshanov | Round 1: Kazakis, Mattheos Konstantinos - Ravshanov, Sheralijon | King's Pawn Game | |
| — | Kazakis | ½–½ | Kormas | Round 3: Kazakis, Mattheos Konstantinos - Kormas, Georgios | Sicilian Defense: Najdorf Variation | |
| — | Kazakis | 1–0 | Zhao | Round 5: Kazakis, Mattheos Konstantinos - Zhao, Yunqing | Sicilian Defense: Moscow Variation | |
| — | Kazakis | 1–0 | Sidiropoulos | Round 7: Kazakis, Mattheos Konstantinos - Sidiropoulos, Vasilis | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| — | Kazakis | 0–1 | Yu | Round 9: Kazakis, Mattheos Konstantinos - Yu, Shuxiao | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| — | Fuentes de Nova | 0–1 | Kazakis | Round 7: Fuentes de Nova, Sebastian - Kazakis, Mattheos Konstantinos | Nimzo-Indian Defense: Spielmann Variation | |
| — | Todorov | 0–1 | Kazakis | Round 1: Todorov, Nikolay T. - Kazakis, Mattheos Konstantinos | Sicilian Defense: Closed, Korchnoi Defense | |
| — | Tretiak | 1–0 | Kazakis | Round 4: Tretiak, Igor - Kazakis, Mattheos Konstantinos | Zukertort Opening | |
| — | Uzun | 0–1 | Kazakis | Round 5: Uzun, Pavlo - Kazakis, Mattheos Konstantinos | Scandinavian Defense: Main Line | |
| — | Wites | 0–1 | Kazakis | Round 8: Wites, Adam - Kazakis, Mattheos Konstantinos | Rapport-Jobava System | |
| — | Belin | 0–1 | Kazakis | Round 9: Belin, Anton - Kazakis, Mattheos Konstantinos | Scandinavian Defense: Main Line | |
| — | Tretiak | 1–0 | Kazakis | Round 11: Tretiak, Igor - Kazakis, Mattheos Konstantinos | Scandinavian Defense: Main Line | |
| — | Belyaletdinov | 0–1 | Kazakis | Round 14: Belyaletdinov, Leonard - Kazakis, Mattheos Konstantinos | Sicilian Defense: Modern Variations, Main Line | |
| — | Beniosev | 1–0 | Kazakis | Round 16: Beniosev, Daniel - Kazakis, Mattheos Konstantinos | Scandinavian Defense: Mieses-Kotroc Variation | |
| — | Develi | 0–1 | Kazakis | Round 17: Develi, Kemal Cagan - Kazakis, Mattheos Konstantinos | Scandinavian Defense: Main Line, Mieses Variation | |
| — | Gaboyan | 1–0 | Kazakis | Round 2: Gaboyan, Susanna - Kazakis, Mattheos Konstantinos | Sicilian Defense: Najdorf Variation, Adams Attack | |
| — | Banov | ½–½ | Kazakis | Round 4: Banov, Boil - Kazakis, Mattheos Konstantinos | Sicilian Defense: Moscow Variation, Main Line | |
| — | Mnatsakanyan | 1–0 | Kazakis | Round 6: Mnatsakanyan, Aren - Kazakis, Mattheos Konstantinos | English Opening: Four Knights System, Nimzowitsch Variation | |
| — | Triantafilidis | ½–½ | Kazakis | Round 8: Triantafilidis, Mihail - Kazakis, Mattheos Konstantinos | Sicilian Defense: Najdorf Variation | |