| Jun 27, 2026 | Abuladze | 0–1 | Sidoikin | Round 11: Abuladze, Ilia - Sidoikin, Fyodor | Ruy Lopez: Morphy Defense, Classical Defense Deferred | |
| Jun 26, 2026 | Sidoikin | 0–1 | Sander | Round 10: Sidoikin, Fyodor - Sander, Tino | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| Jun 25, 2026 | Jakhaia | 1–0 | Sidoikin | Round 9: Jakhaia, Andria - Sidoikin, Fyodor | Semi-Slav Defense | |
| Jun 24, 2026 | Sidoikin | 1–0 | Kaloh | Round 8: Sidoikin, Fyodor - Kaloh, Edvard | Caro-Kann Defense: Exchange Variation | |
| Jun 23, 2026 | Ronin | ½–½ | Sidoikin | FIDE World Cadets Cup, O12 | Italian Game: Scotch Gambit, Max Lange Attack | |
| Jun 21, 2026 | Janashia | 0–1 | Sidoikin | Round 6: Janashia, Konstantine - Sidoikin, Fyodor | Slav Defense: Exchange Variation | |
| Jun 20, 2026 | Sidoikin | 0–1 | Aguike | Round 5: Sidoikin, Fyodor - Aguike, Toshiya | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| Jun 19, 2026 | Sidoikin | 0–1 | Skouroupathis | Round 4: Sidoikin, Fyodor - Skouroupathis, Kyriakos | Sicilian Defense: Accelerated Dragon | |
| Jun 18, 2026 | Zhelonkin | 1–0 | Sidoikin | Round 3: Zhelonkin, Kirill Mikh - Sidoikin, Fyodor | Ruy Lopez: Morphy Defense, Classical Defense Deferred | |
| Jun 17, 2026 | Sidoikin | 0–1 | Bakhyt | Round 2: Sidoikin, Fyodor - Bakhyt, Rauan | Caro-Kann Defense: Exchange Variation | |
| Jun 16, 2026 | Friscic | 0–1 | Sidoikin | Round 1: Friscic, Jakov - Sidoikin, Fyodor | Semi-Slav Defense | |
| Jan 28, 2026 | Tulegenov | 1–0 | Sidoykin | Round 1: Tulegenov, Anuar - Sidoykin, Fedor | Slav Defense: Breyer Variation | |
| Jan 21, 2026 | Bakyt | ½–½ | Sidoykin | Round 2: Bakyt, Ibrahim - Sidoykin, Fedor | Ruy Lopez: Berlin Defense, Beverwijk Variation | |
| Jan 17, 2025 | Sidoykin | ½–½ | Amreyev | Round 4: Sidoykin, Fedor - Amreyev, Azat | French Defense: Exchange Variation | |
| Jan 20, 2025 | Tleuov | 1–0 | Sidoykin | Round 7: Tleuov, Akhan - Sidoykin, Fedor | Bishop's Opening: Vienna Hybrid, Spielmann Attack | |
| Jan 18, 2025 | Sugraliyev | 1–0 | Sidoykin | Round 5: Sugraliyev, Akhmediyar - Sidoykin, Fedor | King's Indian Defense: Kramer Variation | |
