| Dec 30, 2025 | von Flottwell | 0–1 | von Gehlen | DVM U10 2025 | Caro-Kann Defense: Two Knights Attack | |
| Dec 29, 2025 | Ju | 0–1 | von Flottwell | DVM U10 2025 | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| Dec 29, 2025 | von Flottwell | 0–1 | Gottschling | DVM U10 2025 | Rapport-Jobava System | |
| Dec 29, 2025 | Chupikov | 0–1 | von Flottwell | DVM U10 2025 | Queen's Pawn Game: London System | |
| Dec 28, 2025 | von Flottwell | 1–0 | Roessling | DVM U10 2025 | Pirc Defense | |
| Dec 28, 2025 | Zhu | 0–1 | von Flottwell | DVM U10 2025 | Ruy Lopez: Morphy Defense | |
| Dec 28, 2025 | von Flottwell | 1–0 | Bork | DVM U10 2025 | Ponziani Opening: Jaenisch Counterattack | |
| Jun 14, 2025 | von Flottwell | 0–1 | Busch | DEM U10 2025 | Four Knights Game: Scotch Variation Accepted | |
| Jun 13, 2025 | Moeller | 0–1 | von Flottwell | DEM U10 2025 | Italian Game: Two Knights Defense, Polerio Defense, Bishop Check Line | |
| Jun 12, 2025 | Schmidt | 0–1 | von Flottwell | DEM U10 2025 | Ruy Lopez: Morphy Defense | |
| Jun 11, 2025 | von Flottwell | 0–1 | Tomovski | DEM U10 2025 | French Defense: Advance Variation, Euwe Variation | |
| Jun 11, 2025 | Mettenbrink | 1–0 | von Flottwell | DEM U10 2025 | Italian Game: Giuoco Pianissimo, Canal Variation | |
| Jun 10, 2025 | von Flottwell | 0–1 | Kutlar | DEM U10 2025 | Sicilian Defense: Hyperaccelerated Fianchetto | |
| Jun 9, 2025 | Alloussi | ½–½ | von Flottwell | DEM U10 2025 | Italian Game: Classical Variation, Giuoco Pianissimo, with a6 | |
| Jun 8, 2025 | von Flottwell | 1–0 | Vranckx | DEM U10 2025 | Four Knights Game: Scotch Variation Accepted | |
| Jun 8, 2025 | Hou | 0–1 | von Flottwell | DEM U10 2025 | Four Knights Game: Italian Variation, Noa Gambit | |
| Jun 1, 2025 | von Flottwell | 1–0 | Prasanth | Round 7: von Flottwell, Lionel - Prasanth, Rishi | Four Knights Game: Scotch Variation Accepted | |
| May 31, 2025 | Veelders | ½–½ | von Flottwell | Round 6: Veelders, Wiebke - von Flottwell, Lionel | Italian Game: Two Knights Defense, Polerio Defense, Bishop Check Line | |
| May 31, 2025 | von Flottwell | 1–0 | Doescher | Round 5: von Flottwell, Lionel - Doescher, Nayla | Four Knights Game: Scotch Variation Accepted | |
| May 30, 2025 | von Koschitzky | 1–0 | von Flottwell | Round 4: von Koschitzky, Tilo - von Flottwell, Lionel | Queen's Pawn Game: Zukertort Variation | |
| May 30, 2025 | von Flottwell | ½–½ | Meschke | Round 3: von Flottwell, Lionel - Meschke, Oliver | Sicilian Defense: Alapin Variation, Stoltz Attack | |
| May 29, 2025 | Lossie | 0–1 | von Flottwell | Round 2: Lossie, Simon - von Flottwell, Lionel | Four Knights Game: Spanish Variation, Classical Variation | |
| May 29, 2025 | von Flottwell | 0–1 | Ploog | Round 1: von Flottwell, Lionel - Ploog, Martin, Dr. | Philidor Defense: Lion Variation | |
| Dec 29, 2024 | von Flottwell | 0–1 | Mueller | DVM U10 2024 | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Dec 28, 2024 | von Flottwell | 1–0 | Dombert | DVM U10 2024 | Trompowsky Attack: Classical Defense, Big Center Variation | |
| Dec 28, 2024 | von Flottwell | 0–1 | Liu | DVM U10 2024 | Sicilian Defense: Old Sicilian | |
| Dec 28, 2024 | Jozsa | 0–1 | von Flottwell | DVM U10 2024 | Italian Game: Two Knights Defense, Polerio Defense, Bogoljubow Variation | |
| Dec 27, 2024 | von Flottwell | 1–0 | Wessels | DVM U10 2024 | Sicilian Defense: Old Sicilian | |
| Dec 27, 2024 | Michelson | 0–1 | von Flottwell | DVM U10 2024 | Ponziani Opening | |
| Dec 27, 2024 | Fabritius | ½–½ | von Flottwell | DVM U10 2024 | Queen's Pawn Game: Symmetrical Variation | |
| May 25, 2024 | Zielke | ½–½ | von Flottwell | DEM U10 2024 | Italian Game: Classical Variation, Giuoco Pianissimo | |
| May 24, 2024 | von Flottwell | ½–½ | Cremann | DEM U10 2024 | Sicilian Defense: Smith-Morra Gambit Accepted | |
| May 24, 2024 | Elli | 0–1 | von Flottwell | DEM U10 2024 | Italian Game: Giuoco Pianissimo, Normal | |
| May 23, 2024 | von Flottwell | 1–0 | Wessels | DEM U10 2024 | Sicilian Defense: Smith-Morra Gambit Accepted | |
| May 22, 2024 | von Flottwell | ½–½ | Dintinger | DEM U10 2024 | Four Knights Game: Scotch Variation Accepted | |
| May 22, 2024 | Bergmann | 1–0 | von Flottwell | DEM U10 2024 | Scotch Game: Schmidt Variation | |
| May 21, 2024 | Dutta | 0–1 | von Flottwell | DEM U10 2024 | Scotch Game: Schmidt Variation | |
| May 20, 2024 | von Flottwell | 0–1 | Alloussi | DEM U10 2024 | Ponziani Opening: Jaenisch Counterattack | |
| May 20, 2024 | Ding | ½–½ | von Flottwell | DEM U10 2024 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| May 19, 2024 | von Flottwell | 1–0 | Wittenberger | DEM U10 2024 | Four Knights Game: Scotch Variation | |
| May 19, 2024 | Kandora | 1–0 | von Flottwell | DEM U10 2024 | English Opening: Agincourt Defense | |
| May 12, 2024 | Oblender | ½–½ | von Flottwell | 3. Itzehoer Schach Open (37-58) | Ruy Lopez: Morphy Defense | |
| May 11, 2024 | von Flottwell | ½–½ | Schliesche | 3. Itzehoer Schach Open (37-58) | Four Knights Game: Scotch Variation Accepted | |
| May 11, 2024 | Heimbrodt | 1–0 | von Flottwell | 3. Itzehoer Schach Open | Scotch Game: Schmidt Variation | |
| May 10, 2024 | von Flottwell | 1–0 | Schartl | 3. Itzehoer Schach Open (37-58) | Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Retreat Line | |
| May 10, 2024 | Taube | 0–1 | von Flottwell | 3. Itzehoer Schach Open (37-58) | Four Knights Game: Italian Variation | |
| May 9, 2024 | von Flottwell | 0–1 | Skripalle | 3. Itzehoer Schach Open (37-58) | Sicilian Defense: Smith-Morra Gambit Accepted | |
| May 9, 2024 | Goldmann | 1–0 | von Flottwell | 3. Itzehoer Schach Open | Ruy Lopez: Exchange Variation, King's Bishop Variation | |
| Nov 26, 2024 | Barsov | 1–0 | von Flottwell | Round 11: Barsov, Mikhail - von Flottwell, Lionel | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Nov 25, 2024 | von Flottwell | 1–0 | Hung | Round 10: von Flottwell, Lionel - Hung, I-Hsuan | Four Knights Game: Scotch Variation Accepted | |
| Nov 24, 2024 | Park | 0–1 | von Flottwell | Round 9: Park, Jaeik - von Flottwell, Lionel | Ruy Lopez: Morphy Defense, Wormald Attack | |
| Nov 23, 2024 | von Flottwell | 0–1 | Hochman | Round 8: von Flottwell, Lionel - Hochman, Gur | French Defense: Advance Variation, Paulsen Attack | |
| Nov 22, 2024 | Thorulsley | 1–0 | von Flottwell | Round 7: Thorulsley, Kairaav - von Flottwell, Lionel | Rapport-Jobava System | |
| Nov 20, 2024 | von Flottwell | 1–0 | Dien James | Round 6: von Flottwell, Lionel - Dien James | Scandinavian Defense: Main Line, Leonhardt Gambit | |
| Nov 19, 2024 | Chen | 1–0 | von Flottwell | Round 5: Chen, Pin-Jui - von Flottwell, Lionel | Ruy Lopez: Morphy Defense, Wormald Attack | |
| Nov 18, 2024 | von Flottwell | 1–0 | Radiukevich | Round 4: von Flottwell, Lionel - Radiukevich, Viacheslau | Ponziani Opening: Jaenisch Counterattack | |
| Nov 17, 2024 | Button-Rabl | 1–0 | von Flottwell | Round 3: Button-Rabl, Jiban - von Flottwell, Lionel | Italian Game: Two Knights Defense, Polerio Defense, Kieseritzky Variation | |
| Nov 16, 2024 | von Flottwell | ½–½ | Wang | Round 2: von Flottwell, Lionel - Wang, Yuwei | Sicilian Defense: Delayed Alapin Variation, with d6 | |
| Nov 15, 2024 | Zuo | 1–0 | von Flottwell | Round 1: Zuo, Junyu - von Flottwell, Lionel | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Oct 20, 2023 | Gagloyev | 1–0 | Von Flottwell | WCC 2023 - Open U8 | Italian Game: Scotch Gambit, Anderssen Attack | |