| Nov 4, 2025 | Harmtodt | 1–0 | Steinwidder | Semmering B-Turnier | French Defense: Exchange Variation | |
| Nov 4, 2025 | Steinwidder | 1–0 | Ussar | Semmering B-Turnier | Neo-Grünfeld Defense: Classical Variation, Modern Defense | |
| Nov 4, 2025 | Modric | ½–½ | Steinwidder | Semmering B-Turnier | French Defense: Advance Variation, Euwe Variation | |
| Nov 4, 2025 | Steinwidder | 1–0 | Muellner | Semmering B-Turnier | ? | |
| Nov 4, 2025 | Gajic | 0–1 | Steinwidder | Semmering B-Turnier | French Defense: Exchange Variation | |
| Nov 4, 2025 | Modric | ½–½ | Steinwidder | Semmering B-Turnier | French Defense: Advance Variation, Euwe Variation | |
| Nov 4, 2025 | Steinwidder | 1–0 | Muellner | Semmering B-Turnier | ? | |
| Nov 4, 2025 | Gajic | 0–1 | Steinwidder | Semmering B-Turnier | French Defense: Exchange Variation | |
| Nov 4, 2025 | Gajic | 0–1 | Steinwidder | Semmering B-Turnier | French Defense: Exchange Variation | |
| Nov 4, 2025 | Steinwidder | 1–0 | Ussar | Semmering B-Turnier | Neo-Grünfeld Defense: Classical Variation, Modern Defense | |
| Nov 4, 2025 | Gajic | 0–1 | Steinwidder | Semmering B-Turnier | French Defense: Exchange Variation | |
| Nov 4, 2025 | Steinwidder | 1–0 | Ussar | Semmering B-Turnier | Neo-Grünfeld Defense: Classical Variation, Modern Defense | |
| Nov 4, 2025 | Gajic | 0–1 | Steinwidder | Semmering B-Turnier | French Defense: Exchange Variation | |
| Nov 4, 2025 | Harmtodt | 1–0 | Steinwidder | Semmering B-Turnier | French Defense: Exchange Variation | |
| Nov 4, 2025 | Steinwidder | 1–0 | Ussar | Semmering B-Turnier | Neo-Grünfeld Defense: Classical Variation, Modern Defense | |
| Nov 4, 2025 | Modric | ½–½ | Steinwidder | Semmering B-Turnier | French Defense: Advance Variation, Euwe Variation | |
| Nov 4, 2025 | Steinwidder | 1–0 | Muellner | Semmering B-Turnier | ? | |
| Nov 4, 2025 | Gajic | 0–1 | Steinwidder | Semmering B-Turnier | French Defense: Exchange Variation | |
| Nov 4, 2025 | Steinwidder | 1–0 | Ussar | Semmering B-Turnier | Neo-Grünfeld Defense: Classical Variation, Modern Defense | |
| Nov 4, 2025 | Modric | ½–½ | Steinwidder | Semmering B-Turnier | French Defense: Advance Variation, Euwe Variation | |
| Nov 4, 2025 | Steinwidder | 1–0 | Muellner | Semmering B-Turnier | ? | |
| Nov 4, 2025 | Gajic | 0–1 | Steinwidder | Semmering B-Turnier | French Defense: Exchange Variation | |
| Nov 4, 2025 | Harmtodt | 1–0 | Steinwidder | Semmering B-Turnier | French Defense: Exchange Variation | |
| Nov 4, 2025 | Gajic | 0–1 | Steinwidder | Semmering B-Turnier | French Defense: Exchange Variation | |
| Nov 4, 2025 | Steinwidder | 1–0 | Ussar | Semmering B-Turnier | Neo-Grünfeld Defense: Classical Variation, Modern Defense | |
| Nov 4, 2025 | Modric | ½–½ | Steinwidder | Semmering B-Turnier | French Defense: Advance Variation, Euwe Variation | |
| Nov 4, 2025 | Steinwidder | 1–0 | Muellner | Semmering B-Turnier | ? | |
| Nov 4, 2025 | Gajic | 0–1 | Steinwidder | Semmering B-Turnier | French Defense: Exchange Variation | |
| Nov 4, 2025 | Steinwidder | 1–0 | Ussar | Semmering B-Turnier | Neo-Grünfeld Defense: Classical Variation, Modern Defense | |
| Nov 4, 2025 | Harmtodt | 1–0 | Steinwidder | Semmering B-Turnier | French Defense: Exchange Variation | |
| Nov 4, 2025 | Modric | ½–½ | Steinwidder | Semmering B-Turnier | French Defense: Advance Variation, Euwe Variation | |
| Nov 4, 2025 | Gajic | 0–1 | Steinwidder | Semmering B-Turnier | French Defense: Exchange Variation | |
| Nov 4, 2025 | Steinwidder | 1–0 | Ussar | Semmering B-Turnier | Neo-Grünfeld Defense: Classical Variation, Modern Defense | |
| Nov 4, 2025 | Gajic | 0–1 | Steinwidder | Semmering B-Turnier | French Defense: Exchange Variation | |
| Nov 4, 2025 | Modric | ½–½ | Steinwidder | Semmering B-Turnier | French Defense: Advance Variation, Euwe Variation | |
| Nov 4, 2025 | Gajic | 0–1 | Steinwidder | Semmering B-Turnier | French Defense: Exchange Variation | |
| Nov 4, 2025 | Steinwidder | 1–0 | Swoboda | Semmering B-Turnier | Zukertort Opening: Reversed Grünfeld | |
| Nov 4, 2025 | Gajic | 0–1 | Steinwidder | Semmering B-Turnier | French Defense: Exchange Variation | |
| Nov 4, 2025 | Gajic | 0–1 | Steinwidder | Semmering B-Turnier | French Defense: Exchange Variation | |
| Mar 27, 2024 | Groessing | ½–½ | Steinwidder | Round 6: Groessing, Daniel-Yosuke - Steinwidder, Jonathan | Indian Defense: Anti-Nimzo-Indian | |
| — | Steinwidder | 1–0 | Golke | Round 1: Steinwidder, Jonathan - Golke, Philipp | Indian Defense | |
| — | Steinwidder | 1–0 | Riesz | Round 3: Steinwidder, Jonathan - Riesz, Norbert | Indian Defense | |
| — | Steinwidder | 0–1 | Erber | Round 5: Steinwidder, Jonathan - Erber, Siegfried | Indian Defense | |
| — | Steinwidder | 1–0 | Vorreiter | Round 7: Steinwidder, Jonathan - Vorreiter, Guenter | Indian Defense | |
| — | Tomazini | 1–0 | Steinwidder | Round 2: Tomazini, Zan - Steinwidder, Jonathan | Philidor Defense: Lion Variation, Shirov Gambit | |
| — | Pedevilla | 0–1 | Steinwidder | Round 4: Pedevilla, Luis - Steinwidder, Jonathan | Philidor Defense: Lion Variation | |
| — | Grausgruber | 1–0 | Steinwidder | Round 6: Grausgruber, Rene - Steinwidder, Jonathan | Pirc Defense | |
