| Mar 29, 2026 | Konstantinidis | ½–½ | Daniil | Cyprus Closed Chess Championship 2026 | Scotch Game | |
| Mar 22, 2026 | Isaakidis | 0–1 | Konstantinidis | Cyprus Closed Chess Championship 2026 | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Mar 21, 2026 | Konstantinidis | 1–0 | Hadjinicolaou | Cyprus Closed Chess Championship 2026 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Mar 15, 2026 | Savva | 0–1 | Konstantinidis | Cyprus Closed Chess Championship 2026 | English Opening: Anglo-Indian Defense, King's Indian Formation | |
| Mar 14, 2026 | Konstantinidis | ½–½ | Chiras | Cyprus Closed Chess Championship 2026 | Sicilian Defense: Nimzowitsch Variation, Advance Variation | |
| Mar 8, 2026 | Antoniou | 1–0 | Konstantinidis | Cyprus Closed Chess Championship 2026 | Sicilian Defense: Delayed Alapin Variation | |
| Mar 7, 2026 | Konstantinidis | ½–½ | Michaelides | Cyprus Closed Chess Championship 2026 | Yusupov-Rubinstein System | |
| Mar 6, 2026 | Kefalas | 0–1 | Konstantinidis | Cyprus Closed Chess Championship 2026 | Nimzo-Indian Defense: Rubinstein System, Hübner Variation | |
| Mar 6, 2026 | Konstantinides | ½–½ | Konstantinidis | Cyprus Closed Chess Championship 2026 | Ruy Lopez: Morphy Defense, Modern Steinitz Defense | |
| Feb 1, 2026 | Antoniou | 1–0 | Konstantinidis | Cyprus Open Chess Championship 2026 | Scotch Game: Scotch Gambit, Advance Variation | |
| Jan 25, 2026 | Konstantinidis | ½–½ | Isaakidis | Cyprus Open Chess Championship 2026 | Caro-Kann Defense: Exchange Variation | |
| Jan 18, 2026 | Konstantinidis | 1–0 | Aristotelous | Cyprus Open Chess Championship 2026 | Scotch Game: Potter Variation | |
| Jan 17, 2026 | Lazaris | 0–1 | Konstantinidis | Cyprus Open Chess Championship 2026 | Bogo-Indian Defense: Nimzowitsch Variation | |
| Jan 16, 2026 | Konstantinidis | ½–½ | Sadovsky | Cyprus Open Chess Championship 2026 | Modern Defense: Standard Defense | |
| Jan 16, 2026 | Michaelides | 0–1 | Konstantinidis | Cyprus Open Chess Championship 2026 | King's Indian Attack: Spassky Variation | |
| Nov 21, 2025 | Darmanin | 0–1 | Konstantinidis | Round 8: Darmanin, Jake - Konstantinidis, Konstantinos | Ruy Lopez: Morphy Defense, Modern Steinitz Defense | |
| Nov 19, 2025 | Nielsen | 1–0 | Konstantinidis | Round 6: Nielsen, Jon I Horni - Konstantinidis, Konstantinos | Ruy Lopez: Morphy Defense, Modern Steinitz Defense | |
| Nov 17, 2025 | Leardini | 0–1 | Konstantinidis | Round 4: Leardini, Mirko - Konstantinidis, Konstantinos | Scotch Game: Scotch Gambit, Advance Variation | |
| Nov 17, 2025 | Konstantinidis | 1–0 | Perchard | Round 3: Konstantinidis, Konstantinos - Perchard, Matthew | French Defense: Exchange Variation | |
| Nov 16, 2025 | Konstantinidis | 1–0 | Gonzalez Garcia | Round 2: Konstantinidis, Konstantinos - Gonzalez Garcia, Marc | Caro-Kann Defense: Exchange Variation | |
| Nov 15, 2025 | Berend | ½–½ | Konstantinidis | Round 1: Berend, Elvira - Konstantinidis, Konstantinos | Bogo-Indian Defense: Retreat Variation | |
| Apr 6, 2025 | Theocharous | 1–0 | Konstantinidis | Cyprus Closed Chess Championship 2025 | Four Knights Game: Scotch Variation Accepted | |
| Apr 5, 2025 | Konstantinidis | ½–½ | Antoniou | Cyprus Closed Chess Championship 2025 | Sicilian Defense: French Variation | |
| Mar 30, 2025 | Daniil | 0–1 | Konstantinidis | Cyprus Closed Chess Championship 2025 | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Mar 29, 2025 | Konstantinidis | 1–0 | Chiras | Cyprus Closed Chess Championship 2025 | Yusupov-Rubinstein System | |
| Mar 23, 2025 | Michaelides | 1–0 | Konstantinidis | Cyprus Closed Chess Championship 2025 | King's Indian Defense: Averbakh Variation, Benoni Defense, Advance Variation | |
| Mar 22, 2025 | Konstantinidis | ½–½ | Savva | Cyprus Closed Chess Championship 2025 | Sicilian Defense: Kan Variation, Maróczy Bind, Réti Variation | |
| Mar 16, 2025 | Hadjinicolaou | ½–½ | Konstantinidis | Cyprus Closed Chess Championship 2025 | Four Knights Game: Spanish Variation, Rubinstein Variation Accepted | |
| Mar 9, 2025 | Isaakidis | 1–0 | Konstantinidis | Cyprus Closed Chess Championship 2025 | English Opening: Anglo-Indian Defense, King's Indian Formation | |
| Mar 8, 2025 | Konstantinidis | 1–0 | Aristotelous | Cyprus Closed Chess Championship 2025 | Ruy Lopez: Morphy Defense | |
| Mar 7, 2025 | Constantinou | 0–1 | Konstantinidis | Cyprus Closed Chess Championship 2025 | Rat Defense: English Rat | |
| Jul 10, 2024 | Rigopoulos-Tsigkos | ½–½ | Konstantinidis | Greek League 2024 | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Jul 5, 2024 | Konstantinidis | 0–1 | Kesidis | Greek League 2024 | Four Knights Game: Spanish Variation, Nimzowitsch Variation | |
| Aug 8, 2021 | Konstantinidis | ½–½ | Klimentov | 30th OPEN Chess International Tournament | Indian Defense: Przepiorka Variation | |
| Aug 7, 2021 | Kalogridis | 1–0 | Konstantinidis | 30th OPEN Chess International Tournament | Queen's Gambit Declined: Baltic Defense | |
| Aug 6, 2021 | Konstantinidis | 1–0 | Alexakis | 30th OPEN Chess International Tournament | Sicilian Defense: Lasker-Pelikan Variation | |
| Aug 5, 2021 | Papadopoulos | ½–½ | Konstantinidis | 30th OPEN Chess International Tournament | King's Gambit | |
| Aug 4, 2021 | Konstantinidis | ½–½ | Sirigos | 30th OPEN Chess International Tournament | Queen's Pawn Game: Torre Attack, Grünfeld Variation, Main Line | |
| Aug 3, 2021 | Levitan | * | Konstantinidis | 30th OPEN Chess International Tournament | ? | |
| Aug 2, 2021 | Konstantinidis | * | Bardis | 30th OPEN Chess International Tournament | ? | |
| Aug 2, 2021 | Mashchenko | * | Konstantinidis | 30th OPEN Chess International Tournament | ? | |
| Aug 1, 2021 | Konstantinidis | 0–1 | Postny | 30th OPEN Chess International Tournament | Ruy Lopez: Closed, Martinez Variation | |
| — | Konstantinidis | 1–0 | Daniil | Cyprus Closed Chess Championship 2025 | King's Indian Attack: French Variation | |
