| Jul 18, 2026 | Klings | 0–1 | Guyer | Round 8: Klings, Peter - Guyer, Marlon | King's Indian Attack: Yugoslav Variation | |
| Jul 17, 2026 | Curien | ½–½ | Klings | Round 7: Curien, Nicolas - Klings, Peter | Rapport-Jobava System | |
| Jul 16, 2026 | Klings | ½–½ | Schellenberg | Round 6: Klings, Peter - Schellenberg, Simon | Bishop's Opening: Paulsen Defense | |
| Jul 15, 2026 | Radeva | ½–½ | Klings | Round 5: Radeva, Viktoria - Klings, Peter | French Defense: Advance Variation, Paulsen Attack | |
| Jul 14, 2026 | Klings | ½–½ | Angelovski | Round 4: Klings, Peter - Angelovski, Emanuel | King's Indian Attack: Sicilian Variation | |
| Jul 11, 2026 | Saminskij | ½–½ | Klings | Round 1: Saminskij, Jan - Klings, Peter | Modern Defense: Two Knights Variation | |
| Feb 15, 2025 | Klings | 0–1 | Akshat | Round 9: Klings, Peter - Akshat, Khamparia | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Feb 9, 2025 | Klings | 0–1 | Polster | Round 3: Klings, Peter - Polster, Christian | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| May 30, 2024 | Klings | ½–½ | Bezo | Norway Chess Open 2024 | King's Indian Attack: Yugoslav Variation | |
| May 29, 2024 | Grotnes | ½–½ | Klings | Norway Chess Open 2024 | Nimzo-Indian Defense: Reshevsky Variation | |
| May 28, 2024 | Klings | 1–0 | Derlich | Norway Chess Open 2024 | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| May 27, 2024 | Elsness | 0–1 | Klings | Norway Chess Open 2024 | Modern Defense: Standard Defense | |
| May 26, 2024 | Klings | 0–1 | Bech | Norway Chess Open 2024 | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| May 26, 2024 | Tomaszewski | 1–0 | Klings | Norway Chess Open 2024 | Nimzo-Indian Defense: Three Knights Variation | |
| May 25, 2024 | Klings | 1–0 | Mihaila | Norway Chess Open 2024 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| May 25, 2024 | Mesar | ½–½ | Klings | Round 2: Mesar, Antun - Klings, Peter | Modern Defense | |
| May 24, 2024 | Klings | 0–1 | Mitrabha | Round 1: Klings, Peter - Mitrabha, Guha | French Defense: Advance Variation, Main Line | |
| Oct 28, 2023 | Klings | 0–1 | Dobrosmyslov | 26. Offene Internationale Bayerische Schachmeisterschaft Tegernsee | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |