| Jan 2, 2026 | Haapsal | 1–0 | Koosel | Round 6: Haapsal, Maria Ioanna - Koosel, Hans-Georg | Sicilian Defense: Four Knights Variation, Exchange Variation | |
| Jan 2, 2026 | Koosel | ½–½ | Anderson | Round 5: Koosel, Hans-Georg - Anderson, Markkus | Indian Defense: Anti-Nimzo-Indian | |
| Jan 2, 2026 | Cherentsov | 0–1 | Koosel | Round 4: Cherentsov, Mikhail - Koosel, Hans-Georg | Queen's Gambit Declined: Harrwitz Attack | |
| Jan 2, 2026 | Koosel | 1–0 | Rajandu | Round 3: Koosel, Hans-Georg - Rajandu, Aaron | Queen's Pawn Game: Colle System | |
| Jan 2, 2026 | Koosel | 1–0 | Lebedev | Round 2: Koosel, Hans-Georg - Lebedev, Risto | Italian Game: Two Knights Defense, Max Lange Attack | |
| Jan 2, 2026 | Rudiger | 0–1 | Koosel | Round 1: Rudiger, Maria Helena - Koosel, Hans-Georg | Queen's Gambit Declined: Normal Defense | |
| Aug 6, 2021 | Koosel | 1–0 | Hvozdz | World Youth Cup 2021 O12-G16 - Open 12 | Benko Gambit | |
| Aug 6, 2021 | Koosel | 1–0 | Veerbhadrasinh | World Youth Cup 2021 O12-G16 - Open 12 | Benoni Defense: Benoni-Indian Defense, Kingside Move Order | |
| Aug 6, 2021 | Koosel | 0–1 | Lopez Naranjo | World Youth Cup 2021 O12-G16 - Open 12 | Bogo-Indian Defense: Retreat Variation | |
| Aug 6, 2021 | Koosel | 1–0 | Plazas | World Youth Cup 2021 O12-G16 - Open 12 | Queen's Pawn Game | |
| Aug 6, 2021 | Koosel | 1–0 | Tabatadze | World Youth Cup 2021 O12-G16 - Open 12 | Queen's Indian Defense: Kasparov Variation | |
| Aug 6, 2021 | Khoury | 1–0 | Koosel | World Youth Cup 2021 O12-G16 - Open 12 | Sicilian Defense: Dragon Variation, Classical Variation | |
| Aug 6, 2021 | Sitsanis | 1–0 | Koosel | World Youth Cup 2021 O12-G16 - Open 12 | Sicilian Defense: Dragon Variation, Classical Variation | |
| Aug 6, 2021 | Gao | ½–½ | Koosel | World Youth Cup 2021 O12-G16 - Open 12 | Sicilian Defense: Dragon Variation, Classical Variation | |
| Aug 6, 2021 | Arca | 1–0 | Koosel | World Youth Cup 2021 O12-G16 - Open 12 | Queen's Pawn Game: Accelerated London System | |
| Aug 6, 2021 | Morell | 0–1 | Koosel | World Youth Cup 2021 O12-G16 - Open 12 | Sicilian Defense: Dragon Variation, Yugoslav Attack, Belezky Line | |
