| 31 ago 2026 | Haznedaroglu, Kivanc 2362 | Demirkan, Mustafa 2246 | ½-½ | D02 Apertura de Peón de Dama: Symmetrical Variation, Pseudo-Catalan | 1st Gazi International Open Chess Tournament | Category A | 41 | Ver |
| 9 ago 2026 | Akturk, Mustafa Deniz 2211 | Demirkan, Mustafa 2246 | 1-0 | C55 Apertura Italiana: Two Knights Defense | 2026 Türkiye Satranç Ligi (Turkish League) | Birinci Lig | 50 | Ver |
| 7 ago 2026 | Demirkan, Mustafa 2246 | Engin, Onur Cinar 2161 | 0-1 | B15 Defensa Caro-Kann: Tartakower Variation | 2026 Türkiye Satranç Ligi (Turkish League) | Birinci Lig | 54 | Ver |
| 6 ago 2026 | Yonal, Timur 2196 | Demirkan, Mustafa 2246 | 1-0 | C54 Apertura Italiana: Classical Variation, Giuoco Pianissimo | 2026 Türkiye Satranç Ligi (Turkish League) | Birinci Lig | 57 | Ver |
| 5 ago 2026 | Seyhanoglu, Deniz 2218 | Demirkan, Mustafa 2246 | ½-½ | A20 Apertura Inglesa: King's English Variation | 2026 Türkiye Satranç Ligi (Turkish League) | Birinci Lig | 31 | Ver |
| 5 ago 2026 | Demirkan, Mustafa 2246 | Karaokcu, Erkin 2241 | ½-½ | B42 Defensa Siciliana: Kan Variation, Modern Variation | 2026 Türkiye Satranç Ligi (Turkish League) | Birinci Lig | 32 | Ver |
| 4 ago 2026 | Tarlabasi, Emirhan 2334 | Demirkan, Mustafa 2246 | 1-0 | E40 Defensa Nimzoindia: Rubinstein System | 2026 Türkiye Satranç Ligi (Turkish League) | Birinci Lig | 37 | Ver |
| 4 jul 2026 | Demirkan, Mustafa 2286 | Sahin, Ata Sarp 2031 | ½-½ | B51 Defensa Siciliana: Moscow Variation | 12th Cesme International Open Chess Tournament | 74 | Ver |
| 2 jul 2026 | Demirkan, Mustafa 2286 | Kaldarova, Ayaulym 2029 | 0-1 | C75 Apertura Española (Ruy López): Morphy Defense, Modern Steinitz Defense | 12th Cesme International Open Chess Tournament | 72 | Ver |
| 2 jul 2026 | Mustu, Hatice Asli 2095 | Demirkan, Mustafa 2286 | ½-½ | D30 Gambito de Dama rehusado | 12th Cesme International Open Chess Tournament | 65 | Ver |
| 30 jun 2026 | Demirkan, Mustafa 2261 | Kantor, Gergely 2537 | 0-1 | C93 Apertura Española (Ruy López): Closed, Smyslov Defense | 12th Cesme International Open Chess Tournament | 48 | Ver |
| 29 jun 2026 | Suleymanli, Suleyman 2414 | Demirkan, Mustafa 2261 | ½-½ | D02 Apertura de Peón de Dama: London System | 12th Cesme International Open Chess Tournament | 63 | Ver |
| 27 jun 2026 | Llari, Marc 2283 | Demirkan, Mustafa 2261 | 1-0 | D37 Gambito de Dama rehusado: Three Knights Variation | FIDE World Cadets Cup 2026 | O12 | 60 | Ver |
| 26 jun 2026 | Demirkan, Mustafa 2261 | Yildiz, Ali Aras 2089 | 1-0 | C77 Apertura Española (Ruy López): Morphy Defense, Wormald Attack | FIDE World Cadets Cup 2026 | O12 | 44 | Ver |
| 25 jun 2026 | Demirkan, Mustafa 2261 | Shangin, Lev 2201 | ½-½ | B22 Defensa Siciliana: Delayed Alapin Variation | FIDE World Cadets Cup 2026 | O12 | 88 | Ver |
| 24 jun 2026 | Tulegen, Ramazan 2232 | Demirkan, Mustafa 2261 | 0-1 | D36 Gambito de Dama rehusado: Exchange Variation, Reshevsky Variation | FIDE World Cadets Cup 2026 | O12 | 51 | Ver |
| 23 jun 2026 | Demirkan, Mustafa 2261 | Uzdemir, Ali Poyraz 2194 | 0-1 | B40 Defensa Siciliana: Delayed Alapin Variation, with e6 | FIDE World Cadets Cup, O12 | 37 | Ver |
| 19 jun 2026 | Filipovs, Sergejs 2106 | Demirkan, Mustafa 2261 | 0-1 | C45 Apertura Escocesa: Classical Variation, Intermezzo Variation | FIDE World Cadets Cup 2026 | O12 | 42 | Ver |
| 18 jun 2026 | Demirkan, Mustafa 2261 | Ling, Chenxuan 2082 | 1-0 | C19 Defensa Francesa: Winawer Variation, Positional Variation | FIDE World Cadets Cup 2026 | O12 | 98 | Ver |
| 10 jun 2026 | Advik Amit Agrawal 2382 | Demirkan, Mustafa 2261 | ½-½ | C54 Apertura Italiana: Classical Variation, Giuoco Pianissimo | FIDE World Cadets Cup 2026 | O12 | 33 | Ver |