| 24 jul 2026 | Rajaram, Rohan 2292 | Matthiesen, Martin 2330 | 1-0 | E11 Defensa Bogoindia: Retreat Variation | 9 round swiss | 46 | Ver |
| 23 jul 2026 | Matthiesen, Martin 2330 | Kanyamarala, Tarun 2435 | ½-½ | D37 Gambito de Dama rehusado: Three Knights Variation | 9 round swiss | 30 | Ver |
| 23 jul 2026 | Fries-Nielsen, Jens Ove 2272 | Matthiesen, Martin 2330 | ½-½ | C77 Apertura Española (Ruy López): Morphy Defense, Anderssen Variation | 9 round swiss | 28 | Ver |
| 22 jul 2026 | Matthiesen, Martin 2330 | Sandmann, Villads Majvang 2233 | 1-0 | E14 Defensa India de Dama: Spassky System3 | 9 round swiss | 23 | Ver |
| 21 jul 2026 | Jaksland, Tim 2143 | Matthiesen, Martin 2330 | 0-1 | B12 Defensa Caro-Kann: Advance Variation | 9 round swiss | 64 | Ver |
| 21 jul 2026 | Matthiesen, Martin 2330 | Solodovnichenko, Yuri 2515 | 0-1 | D30 Gambito de Dama rehusado | 9 round swiss | 19 | Ver |
| 20 jul 2026 | Berling, Egil 2121 | Matthiesen, Martin 2330 | 0-1 | A07 Ataque Indio de Rey: Double Fianchetto | 9 round swiss | 40 | Ver |
| 19 abr 2026 | Matthiesen, Martin 2275 | Chatalbashev, Boris 2535 | 1-0 | E94 Defensa India de Rey: Orthodox Variation, Glek Defense | SonFlow Cup 2026 | 65 | Ver |
| 18 abr 2026 | Matthiesen, Martin 2275 | Kopylov, Michael 2343 | ½-½ | A58 Gambito Benko aceptado: Fianchetto Variation | SonFlow Cup 2026 | 52 | Ver |
| 18 abr 2026 | Kopylov, Daniel 2434 | Matthiesen, Martin 2275 | 1-0 | C88 Apertura Española (Ruy López): Closed, Anti-Marshall | SonFlow Cup 2026 | 48 | Ver |
| 18 abr 2026 | Matthiesen, Martin 2275 | Fries-Nielsen, Jens Ove 2284 | 1-0 | A40 Apertura de Peón de Dama: Modern Defense | SonFlow Cup 2026 | 30 | Ver |
| 17 abr 2026 | Skytte, Rasmus 2350 | Matthiesen, Martin 2275 | ½-½ | D53 Gambito de Dama rehusado | SonFlow Cup 2026 | 31 | Ver |
| 31 mar 2026 | Matthiesen, Martin 2292 | Jorgensen, Brian Jorgen 2206 | 1-0 | A80 Defensa Holandesa: Raphael Variation | Eliteklassen | 32 | Ver |
| 22 mar 2026 | Le Besq, Alexander 2284 | Matthiesen, Martin 2275 | 0-1 | B13 Defensa Caro-Kann: Panov Attack, Modern Defense, Mieses Line | Eliteklassen | 41 | Ver |
| 22 mar 2026 | Matthiesen, Martin 2275 | Sandmann, Villads Majvang 2193 | 1-0 | E04 Apertura Catalana: Open Defense | Eliteklassen | 76 | Ver |
| 22 mar 2026 | Hansen, Lars 2198 | Matthiesen, Martin 2275 | 0-1 | B23 Defensa Siciliana: Closed, Traditional | Eliteklassen | 49 | Ver |
| 22 mar 2026 | Matthiesen, Martin 2275 | Sylvan, Jacob 2310 | 0-1 | D24 Gambito de Dama aceptado | Eliteklassen | 37 | Ver |
| 22 mar 2026 | Hansen, Soren Bech 2239 | Matthiesen, Martin 2275 | 0-1 | B12 Defensa Caro-Kann: Advance Variation, Tal Variation | Eliteklassen | 63 | Ver |
| 22 mar 2026 | Matthiesen, Martin 2275 | Rewitz, Poul 2244 | ½-½ | E15 Defensa India de Dama: Fianchetto Variation, Traditional Line | Eliteklassen | 48 | Ver |
| 15 mar 2026 | Matthiesen, Martin 2292 | Loftgaard, Mikkel Vinh 2264 | 0-1 | E01 Apertura Catalana: Tarrasch Defense | SK1968 - Frem | 34 | Ver |