| Apr 6, 2026 | Buckels | 0–1 | Brunke | Grenke Chess Festival 2026 Open | Catalan Opening: Closed | |
| Apr 6, 2026 | Engel | ½–½ | Buckels | Grenke Chess Festival 2026 Open | Ruy Lopez: Morphy Defense, Neo-Arkhangelsk Variation | |
| Apr 5, 2026 | Buckels | 1–0 | Tschernatsch | Grenke Chess Festival 2026 Open | Queen's Pawn Game: London System | |
| Apr 5, 2026 | Horvath | 1–0 | Buckels | Grenke Chess Festival 2026 Open | Petrov's Defense: Paulsen Attack | |
| Apr 4, 2026 | Buckels | ½–½ | Bauer | Grenke Chess Festival 2026 Open | Indian Defense: Wade-Tartakower Defense | |
| Apr 4, 2026 | Stotyn | 0–1 | Buckels | Grenke Chess Festival 2026 Open | Caro-Kann Defense: Advance Variation, Van der Wiel Attack | |
| Apr 3, 2026 | Buckels | 1–0 | Friedrich | Grenke Chess Festival 2026 Open | Zukertort Opening | |
| Apr 3, 2026 | Alvarez Serrano | 0–1 | Buckels | Grenke Chess Festival 2026 Open | Queen's Gambit Declined | |
| Apr 2, 2026 | Buckels | 1–0 | Kowalski | Grenke Chess Festival 2026 Open | Queen's Pawn Game: London System | |
| Mar 28, 2026 | Ten Hertog | 1–0 | Buckels | Round 6: Ten Hertog, Hugo - Buckels, Valentin | Zukertort Opening | |
| Mar 7, 2026 | Buckels | 1–0 | Van Prooijen | Round 8: Buckels, Valentin - Van Prooijen, Jan-Willem | Zukertort Opening: Pirc Invitation | |
| Mar 1, 2026 | Palac | ½–½ | Buckels | 2. Bundesliga Nord | Petrov's Defense: Classical Attack, Mason Variation | |
| Dec 29, 2025 | Buckels | 0–1 | Sammed Jaykumar | Vandoeuvre A et B | Indian Defense: Przepiorka Variation | |
| Dec 28, 2025 | Sumets | 1–0 | Buckels | Vandoeuvre A et B | Queen's Gambit Declined: Harrwitz Attack, Fianchetto Defense | |
| Dec 27, 2025 | Buckels | 1–0 | Gryshko | Vandoeuvre A et B | King's Indian Attack: Spassky Variation | |
| Dec 26, 2025 | Dovgaliuk | 0–1 | Buckels | Vandoeuvre A et B | Queen's Pawn Game: Zukertort Variation | |
| Dec 26, 2025 | Buckels | 1–0 | Dinanath | Round 5: Buckels, Valentin - Dinanath, Hrdya | Benko Gambit Accepted: Pawn Return Variation | |
| Dec 24, 2025 | Buckels | 1–0 | Ernst | Vandoeuvre A et B | King's Indian Defense: Fianchetto Variation, Carlsbad Variation | |
| Dec 24, 2025 | Shagbazyan | ½–½ | Buckels | Vandoeuvre A et B | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Dec 12, 2025 | Doric | 1–0 | Buckels | 2. Bundesliga in Mülheim | Queen's Pawn Game: Colle System | |
| Dec 6, 2025 | Buckels | ½–½ | Cyborowski | 2. Bundesliga in Mülheim | Bogo-Indian Defense: Retreat Variation | |
| Nov 22, 2025 | Warmerdam | 1–0 | Buckels | Round 4: Warmerdam, Max - Buckels, Valentin | English Opening: Agincourt Defense | |
| Nov 16, 2025 | Petrovskiy | 1–0 | Buckels | Round 11: Petrovskiy, Vadym - Buckels, Valentin | Four Knights Game | |
| Nov 16, 2025 | Buckels | 1–0 | Gholami Orimi | Round 10: Buckels, Valentin - Gholami Orimi, Mahdi | Zukertort Opening: Reversed Grünfeld | |
| Nov 16, 2025 | Ermitsch | 0–1 | Buckels | Round 9: Ermitsch, Magnus - Buckels, Valentin | Italian Game: Classical Variation, Greco Gambit | |
| Nov 16, 2025 | Buckels | ½–½ | Stein | Round 8: Buckels, Valentin - Stein, Robert | Queen's Gambit Declined: Queen's Knight Variation | |
| Nov 15, 2025 | Buckels | 1–0 | Nguyen | 3. Berlin U25-Open Rapid | Queen's Pawn Game: London System | |
| Nov 15, 2025 | Gungl | ½–½ | Buckels | Round 7: Gungl, Theo - Buckels, Valentin | Queen's Gambit Declined: Janowski Variation | |
| Nov 15, 2025 | Buckels | 1–0 | Yatskar | Round 6: Buckels, Valentin - Yatskar, Martin | Queen's Gambit Declined: Tarrasch Defense, Pseudo-Tarrasch | |
| Nov 15, 2025 | Dardha | 1–0 | Buckels | Round 5: Dardha, Daniel - Buckels, Valentin | Nimzo-Larsen Attack: Classical Variation | |
| Nov 15, 2025 | Buckels | 1–0 | Trunz | Round 4: Buckels, Valentin - Trunz, Michelle | Slav Defense: Quiet Variation, Pin Defense | |
| Nov 15, 2025 | Woelk | ½–½ | Buckels | 3. Berlin U25-Open Rapid | Ruy Lopez: Morphy Defense, Neo-Arkhangelsk Variation | |
| Nov 15, 2025 | John | 0–1 | Buckels | 3. Berlin U25-Open Rapid | Caro-Kann Defense: Exchange Variation | |
| Nov 15, 2025 | Buckels | 1–0 | Nguyen | 3. Berlin U25-Open Rapid | Queen's Pawn Game: London System | |
| Nov 15, 2025 | John | 0–1 | Buckels | 3. Berlin U25-Open Rapid | Caro-Kann Defense: Exchange Variation | |
| Nov 15, 2025 | Woelk | ½–½ | Buckels | 3. Berlin U25-Open Rapid | Ruy Lopez: Morphy Defense, Neo-Arkhangelsk Variation | |
| Nov 14, 2025 | Vardanyan | 1–0 | Buckels | Round 13 & Semifinals Armageddon: Vardanyan, Aras - Buckels, Valentin | King's Indian Attack: Pachman System | |
| Nov 14, 2025 | Buckels | 1–0 | Chen | Round 12 & Semifinals: Buckels, Valentin - Chen, Yining | Queen's Pawn Game: London System | |
| Nov 14, 2025 | Alexakis | 1–0 | Buckels | Round 11 & Quarterfinals Armageddon: Alexakis, Dimitris - Buckels, Valentin | Ruy Lopez: Morphy Defense, Bayreuth Variation | |
| Nov 14, 2025 | Buckels | 1–0 | Kitze | Round 10 & Quarterfinals: Buckels, Valentin - Kitze, Alexander | Neo-Grünfeld Defense: Classical Variation, Modern Defense | |
| Nov 14, 2025 | Hrebenshchykova | 0–1 | Buckels | Round 9: Hrebenshchykova, Yelyzaveta - Buckels, Valentin | King's Indian Attack: Double Fianchetto | |
| Nov 14, 2025 | Kocharin | 1–0 | Buckels | Round 7: Kocharin, Timur - Buckels, Valentin | Queen's Gambit Declined: Janowski Variation | |
| Nov 14, 2025 | Buckels | 0–1 | Lymar | Round 6: Buckels, Valentin - Lymar, Vladislav | Tarrasch Defense: Symmetrical Variation | |
| Nov 14, 2025 | Kueppers | ½–½ | Buckels | Round 5: Kueppers, Timo - Buckels, Valentin | King's Indian Attack | |
| Nov 14, 2025 | Buckels | ½–½ | Tabatabaei | Round 4: Buckels, Valentin - Tabatabaei, M. Amin | Queen's Pawn Game: London System | |
| Nov 7, 2025 | Buckels | 1–0 | Van Roon | KNSB competitie 2025/2026 | Zukertort Opening | |
| Oct 4, 2025 | Jens | 0–1 | Buckels | Round 2: Jens, Jelmer - Buckels, Valentin | Bishop's Opening: Berlin Defense | |
| Apr 27, 2025 | Vitiugov | 1–0 | Buckels | Schachbundesliga | Zukertort Opening: Reversed Grünfeld | |
| Apr 25, 2025 | Kadric | ½–½ | Buckels | Schachbundesliga | Petrov's Defense: Classical Attack | |
| Apr 21, 2025 | Kristensen | ½–½ | Buckels | Round 8: Kristensen, Kaare Hove - Buckels, Valentin | Scotch Game: Malaniuk Variation | |
| Apr 21, 2025 | Biastoch | 1–0 | Buckels | Grenke Chess Open A | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| Apr 20, 2025 | Buckels | 0–1 | Vardanyan | Round 7: Buckels, Valentin - Vardanyan, Aras | Queen's Pawn Game: London System | |
| Apr 20, 2025 | Woodward | 1–0 | Buckels | Round 6: Woodward, Andy - Buckels, Valentin | Catalan Opening: Open Defense | |
| Apr 19, 2025 | Buckels | ½–½ | Amar | Round 5: Buckels, Valentin - Amar, Elham | Queen's Pawn Game: London System | |
| Apr 19, 2025 | Zienkiewicz | 0–1 | Buckels | Round 4: Zienkiewicz, Jan - Buckels, Valentin | Italian Game: Classical Variation, Giuoco Pianissimo, with a6 | |
| Apr 18, 2025 | Buckels | 1–0 | Schneider | Round 3: Buckels, Valentin - Schneider, Jana | Queen's Pawn Game: London System | |
| Apr 18, 2025 | Bouget | 0–1 | Buckels | Round 2: Bouget, Alexandre - Buckels, Valentin | Nimzo-Indian Defense: Normal Variation | |
| Apr 17, 2025 | Buckels | 1–0 | Grewenig | Round 1: Buckels, Valentin - Grewenig, Jan | Indian Defense: Przepiorka Variation | |
| Mar 23, 2025 | Buckels | 0–1 | Ferreira | schachbundesliga20242025 | Nimzo-Indian Defense: Normal Variation | |
| Mar 22, 2025 | Buckels | ½–½ | Amin | schachbundesliga20242025 | Indian Defense: Przepiorka Variation | |
| Feb 23, 2025 | Fressinet | 1–0 | Buckels | 1. BL Bremen | Bishop's Opening: Berlin Defense | |
| Feb 22, 2025 | Buckels | ½–½ | Nielsen | 1. BL Bremen | Queen's Pawn Game: London System | |
| Jan 11, 2025 | Buckels | ½–½ | Svane | Bundesliga 2024/2025 | English Opening: King's English Variation | |
| Dec 1, 2024 | Stojanovic | ½–½ | Buckels | SBL | Italian Game: Giuoco Pianissimo, Canal Variation | |
| Nov 30, 2024 | Buckels | ½–½ | Blohberger | SBL | Indian Defense: London System | |
| Sep 29, 2024 | Harikrishna | 1–0 | Buckels | Deutsche Schachbundesliga 24-25 | English Opening: Agincourt Defense | |
| Sep 28, 2024 | Buckels | 0–1 | Sindarov | Deutsche Schachbundesliga 24-25 | East Indian Defense | |
| Aug 12, 2024 | Krastev | ½–½ | Buckels | Round 9: Krastev, Alexander - Buckels, Valentin | Petrov's Defense: French Attack | |
| Aug 12, 2024 | Buckels | ½–½ | Maksimenko | Round 8: Buckels, Valentin - Maksimenko, Andrei | Queen's Gambit Accepted: Classical Defense, Steinitz Variation, Development Variation | |
| Aug 12, 2024 | Kekelidze | ½–½ | Buckels | Round 7: Kekelidze, Mikheil - Buckels, Valentin | Queen's Gambit Declined | |
| Aug 12, 2024 | Buckels | 1–0 | Braeuer | Round 6: Buckels, Valentin - Braeuer, Franz | English Opening: Symmetrical Variation, Full Symmetry Line | |
| Aug 12, 2024 | Baenziger | 1–0 | Buckels | Round 5: Baenziger, Fabian - Buckels, Valentin | Catalan Opening: Open Defense | |
| Aug 12, 2024 | Buckels | 0–1 | Eugene | Round 4: Buckels, Valentin - Eugene, Floryan | Catalan Opening: Closed | |
| Aug 12, 2024 | Yelisieiev | ½–½ | Buckels | Round 3: Yelisieiev, Yevhenii - Buckels, Valentin | Queen's Gambit Declined: Harrwitz Attack, Two Knights Defense, Blockade Line | |
| Jul 29, 2024 | Buckels | 1–0 | Schroeder | Round 6: Buckels, Valentin - Schroeder, Lennart | English Opening: Symmetrical Variation, Four Knights Variation | |
| Jul 27, 2024 | Van Rootselaar | 1–0 | Buckels | Round 5: Van Rootselaar, Rik - Buckels, Valentin | Bogo-Indian Defense: Retreat Variation | |
| Jul 26, 2024 | Buckels | ½–½ | Slagboom | Round 4: Buckels, Valentin - Slagboom, Leandro | Tarrasch Defense: Dubov Tarrasch | |
| Jul 25, 2024 | Van Foreest | ½–½ | Buckels | Round 3: Van Foreest, Machteld - Buckels, Valentin | French Defense: Winawer Variation, Delayed Exchange Variation | |
| Jul 24, 2024 | Buckels | 1–0 | Kurt | Round 2: Buckels, Valentin - Kurt, Sascha | Indian Defense: Przepiorka Variation | |
| Jul 23, 2024 | Hng | ½–½ | Buckels | Round 1: Hng, Mei-En Emmanuelle - Buckels, Valentin | Ruy Lopez: Closed, Delayed Exchange | |
| Apr 28, 2024 | Van den Doel | ½–½ | Buckels | SchachBuli Runde 15 | Ruy Lopez: Morphy Defense, Neo-Arkhangelsk Variation | |
| Apr 27, 2024 | Buckels | ½–½ | Kasimdzhanov | SchachBuli Runde 14 | King's Indian Defense: Fianchetto Variation, Carlsbad Variation | |
| Apr 1, 2024 | Buckels | 1–0 | Stelmaszyk | Grenke Chess Open 2024 | Indian Defense: London System | |
| Apr 1, 2024 | Janeczko | 0–1 | Buckels | Grenke Chess Open 2024 | Bishop's Opening: Vienna Hybrid, Spielmann Attack | |
| Mar 31, 2024 | Buckels | ½–½ | Dobrikov | Grenke Chess Open 2024 | Slav Defense: Quiet Variation | |
| Mar 31, 2024 | Lewtak | ½–½ | Buckels | Grenke Chess Open 2024 | Italian Game: Classical Variation, Giuoco Pianissimo, with a6 | |
| Mar 30, 2024 | Buckels | 0–1 | Sarana | GRENKE Chess Open | Queen's Pawn Game: London System | |
| Mar 30, 2024 | Schneider | 0–1 | Buckels | Grenke Chess Open 2024 | Ruy Lopez: Morphy Defense, Modern Steinitz Defense | |
| Mar 29, 2024 | Barzen | 0–1 | Buckels | Grenke Chess Open 2024 | Ruy Lopez: Morphy Defense, Modern Steinitz Defense | |
| Mar 28, 2024 | Kuandykuly | 0–1 | Buckels | Grenke Chess Open 2024 | Ruy Lopez: Morphy Defense, Cozio Defense | |
| Mar 17, 2024 | Lindgren | 0–1 | Buckels | SBL | Catalan Opening: Open Defense | |
| Mar 16, 2024 | Buckels | 1–0 | Kruckenhauser | SBL | Queen's Indian Defense: Kasparov-Petrosian Variation, Marco Defense | |
| Feb 25, 2024 | Jaracz | ½–½ | Buckels | Schachbundesliga 23/24 | Ruy Lopez: Morphy Defense, Neo-Arkhangelsk Variation | |
| Feb 23, 2024 | Buckels | ½–½ | Naumann | Schachbundesliga 23/24 | Indian Defense: Anti-Nimzo-Indian | |
| Feb 4, 2024 | Buckels | ½–½ | Thybo | Deutsche Bundesliga 2023/2024 | Queen's Pawn Game: London System | |
| Feb 3, 2024 | Heinemann | 0–1 | Buckels | Deutsche Bundesliga 2023/2024 | Four Knights Game: Scotch Variation, Schmid Defense | |
| Jan 14, 2024 | Buckels | ½–½ | Moehn | Bundesliga 2023/2024 | King's Indian Defense: Fianchetto Variation, Carlsbad Variation | |
| Aug 13, 2024 | Buckels | ½–½ | Mons | Round 2: Buckels, Valentin - Mons, Leon | Indian Defense: London System | |
| Aug 12, 2024 | Costa | ½–½ | Buckels | Round 1: Costa, Leonardo - Buckels, Valentin | Petrov's Defense: Modern Attack, Center Variation | |
| Aug 1, 2024 | Hausrath | ½–½ | Buckels | Round 9: Hausrath, Daniel - Buckels, Valentin | Catalan Opening: Open Defense, Classical Line | |