| Apr 26, 2026 | Karamichos | ½–½ | Isaakidis | Finals: Karamichos, Michail - Isaakidis, Alexandros | King's Indian Attack: Yugoslav Variation | |
| Apr 25, 2026 | Isaakidis | 1–0 | Gouloutis | Semifinals: Isaakidis, Alexandros - Gouloutis, Nikolaos | English Opening: Neo-Catalan | |
| Apr 18, 2026 | Isaakidis | 0–1 | Moor | Round 8: Isaakidis, Alexandros - Moor, Roger | Grünfeld Defense: Exchange Variation, Modern Exchange Variation | |
| Apr 16, 2026 | Isaakidis | 0–1 | Stamatiou | Round 6: Isaakidis, Alexandros - Stamatiou, Rodolfos | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Apr 16, 2026 | Gkavardinas | ½–½ | Isaakidis | Round 5: Gkavardinas, Antonios - Isaakidis, Alexandros | Caro-Kann Defense: Classical Variation, Lobron System | |
| Apr 15, 2026 | Isaakidis | ½–½ | Lu | Round 4: Isaakidis, Alexandros - Lu, Miaoyi | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Apr 14, 2026 | Isaakidis | ½–½ | Poetsch | Round 2: Isaakidis, Alexandros - Poetsch, Hagen | Zukertort Opening: Reversed Grünfeld | |
| Apr 13, 2026 | Kefalas | * | Isaakidis | Round 1: Kefalas, Loukas - Isaakidis, Alexandros | ? | |
| Mar 29, 2026 | Isaakidis | 1–0 | Kefalas | Cyprus Closed Chess Championship 2026 | Sicilian Defense: Classical Variation | |
| Mar 28, 2026 | Daniil | 0–1 | Isaakidis | Cyprus Closed Chess Championship 2026 | Sicilian Defense: Classical Variation | |
| Mar 22, 2026 | Isaakidis | 0–1 | Konstantinidis | Cyprus Closed Chess Championship 2026 | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Mar 21, 2026 | Konstantinides | 0–1 | Isaakidis | Cyprus Closed Chess Championship 2026 | Ruy Lopez: Closed, Keres Defense | |
| Mar 15, 2026 | Hadjinicolaou | 0–1 | Isaakidis | Cyprus Closed Chess Championship 2026 | Dutch Defense: Staunton Gambit | |
| Mar 14, 2026 | Isaakidis | 1–0 | Savva | Cyprus Closed Chess Championship 2026 | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Mar 8, 2026 | Chiras | ½–½ | Isaakidis | Cyprus Closed Chess Championship 2026 | English Opening: Symmetrical Variation, Ultra-Symmetrical Variation | |
| Mar 7, 2026 | Isaakidis | 1–0 | Antoniou | Cyprus Closed Chess Championship 2026 | Sicilian Defense: Four Knights Variation, Cobra Variation | |
| Mar 6, 2026 | Michaelides | 1–0 | Isaakidis | Cyprus Closed Chess Championship 2026 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Feb 1, 2026 | Safonov | 0–1 | Isaakidis | Cyprus Open Chess Championship 2026 | Caro-Kann Defense: Exchange Variation | |
| Jan 31, 2026 | Isaakidis | 1–0 | Chiras | Cyprus Open Chess Championship 2026 | Nimzo-Indian Defense: Normal Variation, Botvinnik System | |
| Jan 25, 2026 | Konstantinidis | ½–½ | Isaakidis | Cyprus Open Chess Championship 2026 | Caro-Kann Defense: Exchange Variation | |
| Jan 24, 2026 | Isaakidis | 1–0 | Kefalas | Cyprus Open Chess Championship 2026 | Petrov's Defense: Nimzowitsch Attack | |
| Jan 18, 2026 | Kourouyiannis | 0–1 | Isaakidis | Cyprus Open Chess Championship 2026 | Modern Defense: Kotov Variation | |
| Jan 17, 2026 | Isaakidis | ½–½ | Saridis | Cyprus Open Chess Championship 2026 | English Opening: King's English Variation | |
| Nov 22, 2025 | Efimov | 0–1 | Isaakidis | Round 9: Efimov, Igor - Isaakidis, Alexandros | Caro-Kann Defense: Classical Variation | |
| Nov 21, 2025 | Isaakidis | ½–½ | Novak | Round 8: Isaakidis, Alexandros - Novak, Attila Robert | Zukertort Opening | |
| Nov 19, 2025 | Morgan | 0–1 | Isaakidis | Round 7: Morgan, Jamie - Isaakidis, Alexandros | Caro-Kann Defense: Two Knights Attack | |
| Nov 19, 2025 | Isaakidis | 0–1 | Ziska | Round 6: Isaakidis, Alexandros - Ziska, Helgi Dam | King's Indian Attack: Symmetrical Defense | |
| Nov 17, 2025 | Volpinari | 0–1 | Isaakidis | Round 4: Volpinari, Danilo - Isaakidis, Alexandros | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| Nov 16, 2025 | De La Riva Aguado | 1–0 | Isaakidis | Round 2: De La Riva Aguado, Oscar - Isaakidis, Alexandros | Caro-Kann Defense: Two Knights Attack | |
| Nov 15, 2025 | Isaakidis | ½–½ | Wiedenkeller | Round 1: Isaakidis, Alexandros - Wiedenkeller, Michael | Ruy Lopez: Open Berlin Defense, l'Hermet Variation | |
| Nov 14, 2025 | Isaakidis | ½–½ | Krieger | Round 5: Isaakidis, Alexandros - Krieger, Markus | Nimzo-Larsen Attack: Classical Variation | |
| Apr 17, 2025 | Gioras | 0–1 | Isaakidis | paphos2025 | Sicilian Defense: Old Sicilian | |
| Apr 16, 2025 | Isaakidis | ½–½ | Knaak | paphos2025 | English Opening: Neo-Catalan | |
| Apr 15, 2025 | Isaakidis | ½–½ | Nevednichy | paphos2025 | King's Indian Defense: Fianchetto Variation, Carlsbad Variation | |
| Apr 13, 2025 | Harutjunyan | 1–0 | Isaakidis | paphos2025 | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Apr 12, 2025 | Isaakidis | 0–1 | Tsaknakis | paphos2025 | Vienna Game: Falkbeer Variation | |
| Apr 6, 2025 | Chiras | 0–1 | Isaakidis | Cyprus Closed Chess Championship 2025 | Sicilian Defense: Hyperaccelerated Dragon | |
| Apr 5, 2025 | Isaakidis | 1–0 | Savva | Cyprus Closed Chess Championship 2025 | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Mar 30, 2025 | Daniil | 0–1 | Isaakidis | Cyprus Closed Chess Championship 2025 | Sicilian Defense: Richter-Rauzer Variation | |
| Mar 29, 2025 | Isaakidis | ½–½ | Aristotelous | Cyprus Closed Chess Championship 2025 | Semi-Slav Defense: Quiet Variation | |
| Mar 23, 2025 | Theocharous | 0–1 | Isaakidis | Cyprus Closed Chess Championship 2025 | Caro-Kann Defense: Classical Variation, Lobron System | |
| Mar 22, 2025 | Isaakidis | 1–0 | Daniil | Cyprus Closed Chess Championship 2025 | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Mar 16, 2025 | Michaelides | ½–½ | Isaakidis | Cyprus Closed Chess Championship 2025 | Indian Defense: London System | |
| Mar 9, 2025 | Isaakidis | 1–0 | Konstantinidis | Cyprus Closed Chess Championship 2025 | English Opening: Anglo-Indian Defense, King's Indian Formation | |
| Mar 8, 2025 | Constantinou | 0–1 | Isaakidis | Cyprus Closed Chess Championship 2025 | English Opening: King's English Variation, Taimanov Variation | |
| Mar 7, 2025 | Isaakidis | 1–0 | Antoniou | Cyprus Closed Chess Championship 2025 | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Sep 22, 2024 | Silva | 0–1 | Isaakidis | 45th FIDE Chess Olympiad | Caro-Kann Defense: Two Knights Attack | |
| Sep 20, 2024 | Isaakidis | 1–0 | Levacic | 45th FIDE Chess Olympiad | Modern Defense | |
| Sep 19, 2024 | Brookfield | 0–1 | Isaakidis | 45th FIDE Chess Olympiad | Caro-Kann Defense: Two Knights Attack | |
| Sep 18, 2024 | Isaakidis | 1–0 | Djabri | 45th FIDE Chess Olympiad | Sicilian Defense: Modern Variations | |
| Sep 16, 2024 | Asante Debesai Zerabruk | 0–1 | Isaakidis | 45th FIDE Chess Olympiad | Caro-Kann Defense: Tartakower Variation | |
| Sep 15, 2024 | Annaberdiyev | 1–0 | Isaakidis | 45th FIDE Chess Olympiad | Caro-Kann Defense: Classical Variation | |
| Sep 14, 2024 | Mohamed | 0–1 | Isaakidis | 45th FIDE Chess Olympiad | Indian Defense: Spielmann-Indian | |
| Sep 13, 2024 | Isaakidis | ½–½ | Manon | 45th FIDE Chess Olympiad | Caro-Kann Defense: Breyer Variation | |
| Sep 12, 2024 | Isaakidis | 1–0 | Chinasamy | 45th FIDE Chess Olympiad | Sicilian Defense: Hyperaccelerated Fianchetto | |
| May 1, 2024 | Isaakidis | ½–½ | Putrenko | Round 8: Isaakidis, Alexandros - Putrenko, Kirill | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Apr 30, 2024 | Leftheriotis | 0–1 | Isaakidis | Round 7: Leftheriotis, Alexandros - Isaakidis, Alexandros | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Apr 29, 2024 | Isaakidis | 0–1 | Suder | Round 6: Isaakidis, Alexandros - Suder, Jakub | English Opening: Agincourt Defense | |
| Apr 27, 2024 | Isaakidis | 0–1 | Boruchovsky | Round 2: Isaakidis, Alexandros - Boruchovsky, Avital | English Opening: King's English Variation, Closed System | |
| Apr 14, 2024 | Isaakidis | 1–0 | Hadjidemetriou | Round 11: Isaakidis, Alexandros - Hadjidemetriou, Evangelos | Sicilian Defense: Najdorf Variation, Adams Attack | |
| Apr 13, 2024 | Kefalas | 0–1 | Isaakidis | Round 10: Kefalas, Loukas - Isaakidis, Alexandros | Ruy Lopez: Morphy Defense, Duras Variation | |
| Apr 7, 2024 | Isaakidis | 1–0 | Aristotelous | Round 9: Isaakidis, Alexandros - Aristotelous, Vassilis | Italian Game: Classical Variation, Giuoco Pianissimo, with d6 | |
| Apr 7, 2024 | Constantinou | 0–1 | Isaakidis | Round 8: Constantinou, Samuel Johannes - Isaakidis, Alexandros | ? | |
| Mar 31, 2024 | Michaelides | 1–0 | Isaakidis | Round 6: Michaelides, Konstantinos - Isaakidis, Alexandros | Indian Defense: Pseudo-Benko | |
| Mar 31, 2024 | Isaakidis | 1–0 | Abatzidis | Round 7: Isaakidis, Alexandros - Abatzidis, Stelios | Italian Game: Paris Defense | |
| Mar 24, 2024 | Isaakidis | 1–0 | Savva | Round 5: Isaakidis, Alexandros - Savva, Panikos | English Opening: Symmetrical Variation, Four Knights Variation | |
| Mar 23, 2024 | Antoniou | 0–1 | Isaakidis | Round 4: Antoniou, Rafail - Isaakidis, Alexandros | Caro-Kann Defense: Two Knights Attack | |
| Mar 17, 2024 | Hadjinicolaou | 1–0 | Isaakidis | Round 3: Hadjinicolaou, Andreas - Isaakidis, Alexandros | Queen's Gambit Declined | |
| Mar 16, 2024 | Isaakidis | 1–0 | Kassinopoullos | Round 2: Isaakidis, Alexandros - Kassinopoullos, Doros | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Mar 15, 2024 | Daniil | 0–1 | Isaakidis | Round 1: Daniil, Daniil - Isaakidis, Alexandros | Caro-Kann Defense: Tartakower Variation | |
| Apr 13, 2023 | Isaakidis | 1–0 | Goluch | Paphos | Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation, Quiet Line | |
| Apr 12, 2023 | Markidis | ½–½ | Isaakidis | Paphos | Ruy Lopez: Open | |
| Apr 10, 2023 | Pezelj | 0–1 | Isaakidis | Paphos | Caro-Kann Defense: Exchange Variation | |
| Apr 8, 2023 | Tiviakov | 1–0 | Isaakidis | Paphos | Caro-Kann Defense: Breyer Variation | |
| Aug 8, 2021 | Sotiropoulos | * | Isaakidis | 30th OPEN Chess International Tournament | ? | |
| Aug 7, 2021 | Isaakidis | 0–1 | Sidiropoulos | 30th OPEN Chess International Tournament | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Aug 6, 2021 | Behling | * | Isaakidis | 30th OPEN Chess International Tournament | ? | |
| Aug 5, 2021 | Isaakidis | 0–1 | Kazakos | 30th OPEN Chess International Tournament | Sicilian Defense: Kan Variation, Knight Variation | |
| Aug 4, 2021 | Magalakis | * | Isaakidis | 30th OPEN Chess International Tournament | ? | |
| Aug 3, 2021 | Isaakidis | * | Stamoudis | 30th OPEN Chess International Tournament | ? | |
| Aug 2, 2021 | Isaakidis | 0–1 | Solodovnichenko | 30th OPEN Chess International Tournament | Sicilian Defense: O'Kelly Variation, Yerevan System | |
| Aug 2, 2021 | Stefanou | * | Isaakidis | 30th OPEN Chess International Tournament | ? | |
| Aug 1, 2021 | Nikolakis | * | Isaakidis | 30th OPEN Chess International Tournament | ? | |
| — | Isaakidis | 1–0 | Hadjinicolaou | Cyprus Closed Chess Championship 2025 | English Opening: Anglo-Indian Defense, Queen's Indian Formation | |