| Jul 9, 2026 | Matiievskyi | 0–1 | Kopacz | rzeszow | Dutch Defense: Queen's Knight Variation | |
| Jul 9, 2026 | Kopacz | 1–0 | Matiievskyi | rzeszow | Nimzo-Larsen Attack: Indian Variation | |
| Jul 9, 2026 | Matiievskyi | 0–1 | Kiszkiel | rzeszow | King's Indian Defense: Averbakh Variation, Flexible Defense | |
| Jul 9, 2026 | Kiszkiel | 1–0 | Matiievskyi | rzeszow | King's Indian Attack, with e6 | |
| Jul 9, 2026 | Matiievskyi | 0–1 | Strus | rzeszow | Benoni Defense: Classical Variation | |
| Jul 9, 2026 | Strus | ½–½ | Matiievskyi | rzeszow | Nimzo-Indian Defense: Leningrad Variation | |
| Jul 9, 2026 | Matiievskyi | 0–1 | Wilusz | rzeszow | Nimzo-Indian Defense: Reshevsky Variation | |
| Jul 9, 2026 | Wilusz | 0–1 | Matiievskyi | rzeszow | Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line | |
| Jul 9, 2026 | Matiievskyi | ½–½ | Bilochenko | rzeszow | Grünfeld Defense: Exchange Variation, Classical Variation | |
| Jul 9, 2026 | Bilochenko | 1–0 | Matiievskyi | rzeszow | English Opening: Four Knights System, Nimzowitsch Variation | |
| Jul 9, 2026 | Matiievskyi | 1–0 | Szeszycki | rzeszow | Dutch Defense: Classical Variation, Buenos Aires Variation | |
| Jul 9, 2026 | Szeszycki | ½–½ | Matiievskyi | rzeszow | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Jul 9, 2026 | Czeremcha | * | Matiievskyi | rzeszow | ? | |
| Jul 9, 2026 | Szuszkiewicz | * | Matiievskyi | rzeszow | ? | |
| Jul 9, 2026 | Matiievskyi | * | Szuszkiewicz | rzeszow | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| Jul 8, 2026 | Zieba | 1–0 | Matiievskyi | rzeszow | Caro-Kann Defense: Karpov Variation | |
| Jul 8, 2026 | Matiievskyi | 0–1 | Korchevskyi | rzeszow | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jul 8, 2026 | Korszanski | 1–0 | Matiievskyi | rzeszow | Caro-Kann Defense: Panov Attack, Modern Defense | |
| Jul 8, 2026 | Matiievskyi | 1–0 | Molchanov | rzeszow | Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation | |
| Jul 7, 2026 | Diachek | ½–½ | Matiievskyi | rzeszow | English Opening: King's English Variation, Four Knights Variation, Quiet Line | |
| Jul 7, 2026 | Matiievskyi | 1–0 | Tatulli Uva | rzeszow | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jul 7, 2026 | Matiievskyi | ½–½ | Sewohl | rzeszow | Pterodactyl Defense: Queen Pterodactyl, Quiet Line | |
| Jul 7, 2026 | Kaczmarek | 0–1 | Matiievskyi | rzeszow | Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation | |
| Aug 20, 2024 | Matiievskyi | 1–0 | Pavlyk | EYCC 2024 Blitz O12 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Aug 20, 2024 | Matiievskyi | 1–0 | Chiszko | EYCC 2024 Blitz O12 | Nimzo-Indian Defense: Reshevsky Variation | |
| Aug 20, 2024 | Matiievskyi | 0–1 | Gibala | EYCC 2024 Blitz O12 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Aug 20, 2024 | Matiievskyi | 0–1 | Kipen | EYCC 2024 Blitz O12 | Queen's Gambit Accepted: Old Variation | |
| Aug 20, 2024 | Matiievskyi | 1–0 | Leenen | EYCC 2024 Blitz O12 | Nimzo-Indian Defense: Normal Variation, Botvinnik System | |
| Aug 20, 2024 | Matiievskyi | 0–1 | Vardi | EYCC 2024 Blitz O12 | Tarrasch Defense: Classical Variation, Carlsbad Variation | |
| Aug 20, 2024 | Pavlyk | 0–1 | Matiievskyi | EYCC 2024 Blitz O12 | Caro-Kann Defense: Two Knights Attack, Mindeno Variation | |
| Aug 20, 2024 | Chiszko | 1–0 | Matiievskyi | EYCC 2024 Blitz O12 | English Opening: King's English Variation | |
| Aug 20, 2024 | Gibala | ½–½ | Matiievskyi | EYCC 2024 Blitz O12 | Caro-Kann Defense: Endgame Variation | |
| Aug 20, 2024 | Kipen | 0–1 | Matiievskyi | EYCC 2024 Blitz O12 | Caro-Kann Defense: Maróczy Variation | |
| Aug 20, 2024 | Leenen | 1–0 | Matiievskyi | EYCC 2024 Blitz O12 | English Opening: King's English Variation, Two Knights Variation, Keres Variation | |
| Aug 20, 2024 | Vardi | 0–1 | Matiievskyi | EYCC 2024 Blitz O12 | Caro-Kann Defense: Panov Attack, Modern Defense | |
| Aug 19, 2024 | Matiievskyi | 1–0 | Filindash | EYCC 2024 Blitz O12 | Semi-Slav Defense: Stoltz Variation, Center Variation | |
| Aug 19, 2024 | Matiievskyi | 1–0 | Honcharov | EYCC 2024 Blitz O12 | King's Indian Defense: Averbakh Variation, Benoni Defense, Advance Variation | |
| Aug 19, 2024 | Filindash | 0–1 | Matiievskyi | EYCC 2024 Blitz O12 | Nimzo-Indian Defense: Normal Variation, Gligoric System | |
| Aug 19, 2024 | Honcharov | 1–0 | Matiievskyi | EYCC 2024 Blitz O12 | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Aug 18, 2024 | Matiievskyi | 1–0 | Achinovich | EYCC 2024 Rapid O12 | King's Indian Defense: Averbakh Variation, Flexible Defense | |
| Aug 18, 2024 | Matiievskyi | ½–½ | Golubovic | EYCC 2024 Rapid O12 | Benko Gambit Accepted: Fianchetto Variation | |
| Aug 18, 2024 | Hanache | 0–1 | Matiievskyi | EYCC 2024 Rapid O12 | Caro-Kann Defense: Advance Variation | |
| Aug 18, 2024 | Ritzerveld | 1–0 | Matiievskyi | EYCC 2024 Rapid O12 | Caro-Kann Defense: Karpov Variation | |
| Aug 17, 2024 | Matiievskyi | 1–0 | Kovacik | EYCC 2024 Rapid O12 | Benoni Defense: Old Benoni | |
| Aug 17, 2024 | Gibala | 1–0 | Matiievskyi | EYCC 2024 Rapid O12 | Caro-Kann Defense: Advance Variation, Tal Variation | |