| 20 abr 2026 | Sidorenja, Radion 2123 | Gilfanov, Marat I 2413 | 1-0 | B22 Defensa Siciliana: Alapin Variation, Smith-Morra Declined | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Blitz | O16 | 70 | Ver |
| 20 abr 2026 | Puzyrevsky, Semyon 2415 | Sidorenja, Radion 2123 | 1-0 | A06 Ataque Nimzo-Larsen: Classical Variation | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Blitz | O16 | 72 | Ver |
| 20 abr 2026 | Sidorenja, Radion 2123 | Zhauynbay Aldiyar 2142 | 1-0 | B22 Defensa Siciliana: Alapin Variation, Smith-Morra Declined | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Blitz | O16 | 77 | Ver |
| 20 abr 2026 | Kaufman, David 2438 | Sidorenja, Radion 2123 | 1-0 | D31 Defensa Semieslava: Marshall Gambit, Main Line | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Blitz | O16 | 20 | Ver |
| 20 abr 2026 | Averin, Nikolay 2490 | Sidorenja, Radion 2123 | 0-1 | B32 Defensa Siciliana: Kalashnikov Variation | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Blitz | O16 | 50 | Ver |
| 19 abr 2026 | Sidorenja, Radion 2123 | Rumyantsev, Semen 2311 | 1-0 | C00 Defensa Francesa: Schlechter Variation | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Blitz | O16 | 38 | Ver |
| 19 abr 2026 | Melnikov, Fedor 2325 | Sidorenja, Radion 2123 | 1-0 | D30 Gambito de Dama rehusado | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Blitz | O16 | 33 | Ver |
| 19 abr 2026 | Sidorenja, Radion 2123 | Dumbelovic, Novak 2522 | 1-0 | C00 Defensa Francesa: Schlechter Variation | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Blitz | O16 | 39 | Ver |
| 17 abr 2026 | Rumyantsev, Semen 2227 | Sidorenja, Radion 2095 | 1-0 | A06 Ataque Nimzo-Larsen: Classical Variation | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Rapid | O16 | 51 | Ver |
| 17 abr 2026 | Sidorenja, Radion 2095 | Khazhatuly, Alikhan 2198 | ½-½ | B22 Defensa Siciliana: Alapin Variation | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Rapid | O16 | 147 | Ver |
| 16 abr 2026 | Gilfanov, Marat I 2315 | Sidorenja, Radion 2095 | 1-0 | D30 Gambito de Dama rehusado | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Rapid | O16 | 37 | Ver |
| 16 abr 2026 | Begmuratov, Khumoyun 2467 | Sidorenja, Radion 2095 | 0-1 | B30 Defensa Siciliana: Old Sicilian | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Rapid | O16 | 39 | Ver |
| 16 abr 2026 | Sidorenja, Radion 2095 | Panic, Viktor 2212 | 1-0 | B22 Defensa Siciliana: Alapin Variation, Smith-Morra Declined | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Rapid | O16 | 30 | Ver |
| 15 abr 2026 | Sidorenja, Radion 2095 | Melnikov, Fedor 2338 | 0-1 | B00 Defensa Pirc | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Rapid | O16 | 56 | Ver |
| 13 abr 2026 | Sidorenja, Radion 2095 | Kaufman, David 2417 | ½-½ | C45 Apertura Escocesa: Classical Variation, Millennium Variation | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Rapid | O16 | 57 | Ver |
| 14 oct 2025 | Nemitz, Alfred 2296 | Sidorenja, Radion 2053 | 1-0 | D30 Gambito de Dama rehusado | FIDE World Youth Chess Championships 2025 | Open U14 | 50 | Ver |
| 8 oct 2025 | Rosh Jain 2332 | Sidorenja, Radion 2053 | 1-0 | B31 Defensa Siciliana: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | FIDE World Youth Chess Championships 2025 | Open U14 | 85 | Ver |
| 7 oct 2025 | Sidorenja, Radion 2053 | Vasilkov, Nikolay 2334 | ½-½ | B20 Defensa Siciliana: Lasker-Dunne Attack | FIDE World Youth Chess Championships 2025 | Open U14 | 88 | Ver |
| 6 oct 2025 | Brzezina, Piotr 2330 | Sidorenja, Radion 2053 | 0-1 | B32 Defensa Siciliana: Kalashnikov Variation | FIDE World Youth Chess Championships 2025 | Open U14 | 48 | Ver |