| Feb 27, 2026 | Haring | 1–0 | Mnatsakanyan | PICF 2026 - KAREL JANECEK Open | Caro-Kann Defense: Advance Variation, Short Variation | |
| Oct 5, 2025 | Mnatsakanyan | * | Kanana | Round 1: Mnatsakanyan, Aren - Kanana, Ziad | ? | |
| Dec 18, 2024 | Mnatsakanyan | 1–0 | Sayce | XI Sunway Sitges International Chess Festival 2024 - Group A | English Opening: Symmetrical Variation, Four Knights Variation | |
| Aug 31, 2024 | Mnatsakanyan | 0–1 | Gabadadze | EYCC 2024 - O12 | English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation | |
| Aug 24, 2024 | Mnatsakanyan | 0–1 | Shilon Rahav | EYCC 2024 - O12 | English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3 | |
| Aug 23, 2024 | Golubovic | ½–½ | Mnatsakanyan | EYCC 2024 - O12 | Semi-Slav Defense | |
| — | Mnatsakanyan | ½–½ | Vantika Agrawal | Round 6: Mnatsakanyan, Aren - Vantika Agrawal | English Opening: Four Knights System, Nimzowitsch Variation | |
| — | Mnatsakanyan | 0–1 | Tsaknakis | Round 2: Mnatsakanyan, Aren - Tsaknakis, Zisis | English Opening: King's English Variation, Kramnik-Shirov Counterattack | |
| — | Mnatsakanyan | ½–½ | Avanesyan | Round 4: Mnatsakanyan, Aren - Avanesyan, Aleksandr | English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation | |
| — | Mnatsakanyan | 1–0 | Kazakis | Round 6: Mnatsakanyan, Aren - Kazakis, Mattheos Konstantinos | English Opening: Four Knights System, Nimzowitsch Variation | |
| — | Mnatsakanyan | 1–0 | Triantafilidis | Round 7: Mnatsakanyan, Aren - Triantafilidis, Mihail | English Opening: Agincourt Defense | |
| — | Mnatsakanyan | ½–½ | Niedbala | Round 9: Mnatsakanyan, Aren - Niedbala, Bartlomiej | English Opening | |
| — | Jacobson | 1–0 | Mnatsakanyan | Round 7: Jacobson, Aaron - Mnatsakanyan, Aren | Queen's Gambit Declined: Cambridge Springs Defense, Rubinstein Variation | |
| — | Mohamed Anees M | 1–0 | Mnatsakanyan | Round 9: Mohamed Anees M - Mnatsakanyan, Aren | Slav Defense: Modern Line | |
| — | Heran-Boily | 0–1 | Mnatsakanyan | Round 1: Heran-Boily, Samuel - Mnatsakanyan, Aren | Caro-Kann Defense: Tartakower Variation | |
| — | Galanis | 0–1 | Mnatsakanyan | Round 3: Galanis, Nikolaos-Panagiotis - Mnatsakanyan, Aren | Caro-Kann Defense: Advance Variation, Tal Variation | |
| — | Toliopoulos | ½–½ | Mnatsakanyan | Round 5: Toliopoulos, Konstantinos - Mnatsakanyan, Aren | Caro-Kann Defense: Advance Variation | |
| — | Poupalos | 1–0 | Mnatsakanyan | Round 8: Poupalos, Nikolaos - Mnatsakanyan, Aren | Caro-Kann Defense: Tartakower Variation | |
