| Apr 13, 2026 | Gkavardinas | * | Constantinou | Round 1: Gkavardinas, Antonios - Constantinou, Samuel Johannes | ? | |
| Feb 1, 2026 | Constantinou | 0–1 | Konstantinides | Cyprus Open Chess Championship 2026 | Nimzo-Indian Defense: Kmoch Variation | |
| Jan 31, 2026 | Cherkasova | 1–0 | Constantinou | Cyprus Open Chess Championship 2026 | Sicilian Defense: Najdorf Variation, Lipnitsky Attack | |
| Jan 25, 2026 | Constantinou | 1–0 | Theocharous | Cyprus Open Chess Championship 2026 | English Opening: Anglo-Indian Defense, Queen's Knight Variation | |
| Jan 24, 2026 | Tsakas | 0–1 | Constantinou | Cyprus Open Chess Championship 2026 | Dutch Defense | |
| Jan 18, 2026 | Constantinou | 1–0 | Belyaev | Cyprus Open Chess Championship 2026 | English Opening: King's English Variation, Two Knights Variation, Keres Variation | |
| Nov 22, 2025 | Constantinou | ½–½ | Verdier | Round 9: Constantinou, Samuel Johannes - Verdier, Patrice | Benko Gambit Accepted: Fully Accepted Variation | |
| Nov 19, 2025 | Constantinou | ½–½ | Brookfield | Round 7: Constantinou, Samuel Johannes - Brookfield, Toby | Tarrasch Defense: Classical Variation | |
| Nov 18, 2025 | Schaedler | ½–½ | Constantinou | Round 5: Schaedler, Martin - Constantinou, Samuel Johannes | Queen's Pawn Game: Stonewall Attack | |
| Nov 17, 2025 | Constantinou | 1–0 | Piva | Round 4: Constantinou, Samuel Johannes - Piva, Michele | English Opening: Carls-Bremen System | |
| Nov 17, 2025 | Wojciechowski | 0–1 | Constantinou | Round 3: Wojciechowski, Paul - Constantinou, Samuel Johannes | Pirc Defense: Austrian Attack, Dragon Formation | |
| Apr 15, 2025 | Hamitevici | 1–0 | Constantinou | paphos2025 | Sicilian Defense: Smith-Morra Gambit | |
| Apr 14, 2025 | Constantinou | 0–1 | Sevgi | paphos2025 | Nimzo-Indian Defense: Kmoch Variation | |
| Apr 13, 2025 | Cherkasov | 0–1 | Constantinou | paphos2025 | Sicilian Defense: Sozin Attack | |
| Apr 11, 2025 | Constantinou | 0–1 | Poetsch | paphos2025 | Nimzo-Indian Defense: Kmoch Variation | |
| Apr 6, 2025 | Antoniou | ½–½ | Constantinou | Cyprus Closed Chess Championship 2025 | Pirc Defense | |
| Apr 5, 2025 | Constantinou | ½–½ | Chiras | Cyprus Closed Chess Championship 2025 | Nimzo-Indian Defense: Kmoch Variation | |
| Mar 30, 2025 | Savva | 1–0 | Constantinou | Cyprus Closed Chess Championship 2025 | Queen's Gambit Declined: Orthodox Defense, Rubinstein Variation | |
| Mar 29, 2025 | Constantinou | 1–0 | Daniil | Cyprus Closed Chess Championship 2025 | English Opening: King's English Variation, Reversed Sicilian | |
| Mar 23, 2025 | Aristotelous | ½–½ | Constantinou | Cyprus Closed Chess Championship 2025 | Pirc Defense | |
| Mar 22, 2025 | Constantinou | 1–0 | Theocharous | Cyprus Closed Chess Championship 2025 | Slav Defense: Chebanenko Variation | |
| Mar 16, 2025 | Daniil | 0–1 | Constantinou | Cyprus Closed Chess Championship 2025 | Pirc Defense: Sveshnikov System | |
| Mar 9, 2025 | Hadjinicolaou | 1–0 | Constantinou | Cyprus Closed Chess Championship 2025 | King's Indian Attack | |
| Mar 8, 2025 | Constantinou | 0–1 | Isaakidis | Cyprus Closed Chess Championship 2025 | English Opening: King's English Variation, Taimanov Variation | |
| Mar 7, 2025 | Constantinou | 0–1 | Konstantinidis | Cyprus Closed Chess Championship 2025 | Rat Defense: English Rat | |
| Apr 27, 2024 | Constantinou | 0–1 | Jirasek | Round 3: Constantinou, Samuel Johannes - Jirasek, Pavel | Nimzo-Indian Defense: Kmoch Variation | |
| Apr 14, 2024 | Abatzidis | ½–½ | Constantinou | Round 11: Abatzidis, Stelios - Constantinou, Samuel Johannes | Queen's Pawn Game: Torre Attack | |
| Apr 13, 2024 | Constantinou | 0–1 | Michaelides | Round 10: Constantinou, Samuel Johannes - Michaelides, Konstantinos | King's Indian Attack | |
| Apr 7, 2024 | Savva | 0–1 | Constantinou | Round 9: Savva, Panikos - Constantinou, Samuel Johannes | Dutch Defense: Hopton Attack | |
| Apr 7, 2024 | Constantinou | 0–1 | Isaakidis | Round 8: Constantinou, Samuel Johannes - Isaakidis, Alexandros | ? | |
| Mar 31, 2024 | Constantinou | 1–0 | Kassinopoullos | Round 6: Constantinou, Samuel Johannes - Kassinopoullos, Doros | English Opening: Carls-Bremen System | |
| Mar 31, 2024 | Hadjinicolaou | 0–1 | Constantinou | Round 7: Hadjinicolaou, Andreas - Constantinou, Samuel Johannes | Catalan Opening: Closed | |
| Mar 24, 2024 | Daniil | 1–0 | Constantinou | Round 5: Daniil, Daniil - Constantinou, Samuel Johannes | Sicilian Defense: Najdorf Variation | |
| Mar 23, 2024 | Constantinou | 1–0 | Hadjidemetriou | Round 4: Constantinou, Samuel Johannes - Hadjidemetriou, Evangelos | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6 | |
| Mar 17, 2024 | Kefalas | 1–0 | Constantinou | Round 3: Kefalas, Loukas - Constantinou, Samuel Johannes | Sicilian Defense: Scheveningen Variation, English Attack, with f3 | |
| Mar 16, 2024 | Constantinou | 1–0 | Aristotelous | Round 2: Constantinou, Samuel Johannes - Aristotelous, Vassilis | Queen's Gambit Declined | |
| Mar 15, 2024 | Constantinou | 0–1 | Antoniou | Round 1: Constantinou, Samuel Johannes - Antoniou, Rafail | King's Indian Attack | |
| Mar 3, 2024 | Karaolis | 0–1 | Constantinou | Round 9: Karaolis, Andreas - Constantinou, Samuel Johannes | Sicilian Defense: Moscow Variation, Main Line | |
| Mar 2, 2024 | Constantinou | 0–1 | Abatzidis | Round 8: Constantinou, Samuel Johannes - Abatzidis, Stelios | Nimzo-Indian Defense: Kmoch Variation | |
| Apr 7, 2023 | Constantinou | 0–1 | Mastrovasilis | Paphos | Nimzo-Indian Defense: Kmoch Variation | |
| — | Constantinou | 1–0 | Michaelides | Cyprus Closed Chess Championship 2025 | Nimzo-Indian Defense: Kmoch Variation | |
