| 27 ago 2026 | Kosten, Anthony C. 2370 | Kowalczuk, Wojciech 2029 | 1-0 | A14 Apertura Réti: Anglo-Slav Variation, Bogoljubow Variation, Stonewall Line | European Senior Team Championships 2026 | Senior 65+ | 29 | Ver |
| 21 ago 2026 | Shilov, Sergej 2163 | Kowalczuk, Wojciech 2029 | 1-0 | C13 Defensa Francesa: Classical Variation | Rubinstein E | 35 | Ver |
| 20 ago 2026 | Gasik, Piotr 2002 | Kowalczuk, Wojciech 2029 | 0-1 | A03 Apertura Bird: Dutch Variation | 62. Miedzynarodowy Festiwal Szachowy im. Akiby Rubinsteina -OPEN E | 24 | Ver |
| 14 ago 2026 | Kowalczuk, Wojciech 2029 | Janocha, Wieslaw 2215 | ½-½ | B18 Defensa Caro-Kann: Classical Variation | Rubinstein E | 49 | Ver |
| 19 abr 2026 | Kowalczuk, Wojciech 2035 | Arnason, Jon L 2407 | ½-½ | C47 Apertura de los Cuatro Caballos: Scotch Variation Accepted | FIDE World Senior Team Championships 2026 - Senior 65+ | 35 | Ver |
| 1 nov 2025 | Boulard, Eric 2227 | Kowalczuk, Wojciech 2042 | 1-0 | A29 Apertura Inglesa: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6 | FIDE World Senior Championship 2025 | Open 65+ | 67 | Ver |
| 31 oct 2025 | Taylor, Timothy 2168 | Kowalczuk, Wojciech 2017 | 0-1 | E07 Apertura Catalana: Closed, Botvinnik Variation | FIDE World Senior Championship 2025 | Open 65+ | 50 | Ver |
| 29 oct 2025 | Koehler, Gerhard, Dr. 2142 | Kowalczuk, Wojciech 2017 | 1-0 | E12 Defensa India de Dama: Kasparov Variation | FIDE World Senior Championship 2025 | Open 65+ | 63 | Ver |
| 28 oct 2025 | Kowalczuk, Wojciech 2017 | Teo, Kok Siong 2160 | 1-0 | B42 Defensa Siciliana: Kan Variation, Modern Variation | FIDE World Senior Championship 2025 | Open 65+ | 33 | Ver |
| 25 oct 2025 | Petran, Peter 2172 | Kowalczuk, Wojciech 2017 | 1-0 | A00 Apertura Húngara | FIDE World Senior Championship 2025 | Open 65+ | 25 | Ver |
| 24 oct 2025 | Kowalczuk, Wojciech 2017 | Vehi Bach, Victor Manuel 2167 | ½-½ | B41 Defensa Siciliana: Kan Variation, Maróczy Bind, Réti Variation | FIDE World Senior Championship 2025 | Open 65+ | 46 | Ver |
| 23 oct 2025 | Henttinen, Markku I.O. 2197 | Kowalczuk, Wojciech 2017 | ½-½ | D37 Gambito de Dama rehusado: Harrwitz Attack, Fianchetto Defense | FIDE World Senior Championship 2025 | Open 65+ | 37 | Ver |
| 27 sep 2025 | Renman, Nils-Gustaf 2308 | Kowalczuk, Wojciech 2017 | 0-1 | D47 Defensa Semieslava: Meran Variation | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | 29 | Ver |