| 6 abr 2026 | Buckels, Valentin 2430 | Brunke, Pascal 2294 | 0-1 | E06 Apertura Catalana: Closed | Grenke Chess Festival 2026 Open | 51 | Ver |
| 6 abr 2026 | Engel, Luis 2594 | Buckels, Valentin 2430 | ½-½ | C78 Apertura Española (Ruy López): Morphy Defense, Møller Variation | Grenke Chess Festival 2026 Open | 60 | Ver |
| 5 abr 2026 | Buckels, Valentin 2430 | Tschernatsch, Johannes 2282 | 1-0 | D02 Apertura de Peón de Dama: London System, with e6 | Grenke Chess Festival 2026 Open | 52 | Ver |
| 5 abr 2026 | Horvath, Dominik 2541 | Buckels, Valentin 2430 | 1-0 | C42 Defensa Petrov: Paulsen Attack | Grenke Chess Festival 2026 Open | 60 | Ver |
| 4 abr 2026 | Buckels, Valentin 2430 | Bauer, Christian 2562 | ½-½ | A46 Defensa India: Wade-Tartakower Defense | Grenke Chess Festival 2026 Open | 65 | Ver |
| 4 abr 2026 | Stotyn, Fabian 2179 | Buckels, Valentin 2430 | 0-1 | B12 Defensa Caro-Kann: Advance Variation, Van der Wiel Attack | Grenke Chess Festival 2026 Open | 64 | Ver |
| 3 abr 2026 | Buckels, Valentin 2430 | Friedrich, Ricardo 2266 | 1-0 | A05 Apertura Zukertort | Grenke Chess Festival 2026 Open | 83 | Ver |
| 3 abr 2026 | Alvarez Serrano, Carlos 2204 | Buckels, Valentin 2430 | 0-1 | D30 Gambito de Dama rehusado | Grenke Chess Festival 2026 Open | 49 | Ver |
| 2 abr 2026 | Buckels, Valentin 2430 | Kowalski, Witold 2098 | 1-0 | D02 Apertura de Peón de Dama: London System | Grenke Chess Festival 2026 Open | 21 | Ver |
| 28 mar 2026 | Ten Hertog, Hugo 2521 | Buckels, Valentin 2435 | 1-0 | A06 Apertura Zukertort | Dutch Meesterklasse 2025/26 | 39 | Ver |
| 7 mar 2026 | Buckels, Valentin 2435 | Van Prooijen, Jan-Willem 2141 | 1-0 | A41 Apertura de Peón de Dama: Rossolimo Variation | Dutch Meesterklasse 2025/26 | 31 | Ver |
| 1 mar 2026 | Palac, Mladen 2468 | Buckels, Valentin 2435 | ½-½ | C42 Defensa Petrov: Classical Attack, Mason Variation | 2. Bundesliga Nord | 68 | Ver |
| 29 dic 2025 | Buckels, Valentin 2437 | Sammed Jaykumar, Shete 2383 | 0-1 | A49 Defensa India: Przepiorka Variation | Vandoeuvre A et B | 49 | Ver |
| 28 dic 2025 | Sumets, Andrey 2523 | Buckels, Valentin 2437 | 1-0 | D37 Gambito de Dama rehusado: Harrwitz Attack, Fianchetto Defense | Vandoeuvre A et B | 56 | Ver |
| 27 dic 2025 | Buckels, Valentin 2437 | Gryshko, Vitalii 2365 | 1-0 | A05 Ataque Indio de Rey: Spassky Variation | Vandoeuvre A et B | 53 | Ver |
| 26 dic 2025 | Dovgaliuk, Oleksandr 2273 | Buckels, Valentin 2437 | 0-1 | D03 Apertura de Peón de Dama: Torre Attack | Vandoeuvre A et B | 46 | Ver |
| 26 dic 2025 | Buckels, Valentin 2437 | Dinanath, Hrdya 2149 | 1-0 | A57 Gambito Benko aceptado: Pawn Return Variation | Dutch Meesterklasse 2025/26 | 37 | Ver |
| 24 dic 2025 | Buckels, Valentin 2437 | Ernst, Luca 2261 | 1-0 | E62 Defensa India de Rey: Fianchetto Variation, Carlsbad Variation | Vandoeuvre A et B | 42 | Ver |
| 24 dic 2025 | Shagbazyan, Taron 2429 | Buckels, Valentin 2437 | ½-½ | D35 Gambito de Dama rehusado: Exchange Variation, Carlsen Variation | Vandoeuvre A et B | 45 | Ver |
| 12 dic 2025 | Doric, Darko 2437 | Buckels, Valentin 2437 | 1-0 | D05 Apertura de Peón de Dama: Colle System | 2. Bundesliga in Mülheim | 46 | Ver |