| Jul 12, 2026 | Niebuhr | ½–½ | Klettke | Round 7: Niebuhr, Gerd - Klettke, Wolfgang | English Opening: Symmetrical Variation, Anti-Benoni Variation | |
| Jul 11, 2026 | Klettke | ½–½ | Schober | Round 6: Klettke, Wolfgang - Schober, Ralf | Pirc Defense: Austrian Attack, Unzicker Attack | |
| Jul 10, 2026 | Stuemer | ½–½ | Klettke | Round 5: Stuemer, Paul - Klettke, Wolfgang | Semi-Slav Defense: Main Line | |
| Jul 4, 2026 | Klettke | 0–1 | Okrajek | Round 2: Klettke, Wolfgang - Okrajek, Alexander | Caro-Kann Defense: Exchange Variation | |
| Sep 27, 2025 | Klettke | 0–1 | Postler | Round 7: Klettke, Wolfgang - Postler, Reinhard | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Jul 12, 2025 | Klettke | 0–1 | Kahe | Round 6: Klettke, Wolfgang - Kahe, Ralph | Modern Defense: Three Pawns Attack | |
| Jul 11, 2025 | Klettke | 0–1 | Stuemer | Round 5: Klettke, Wolfgang - Stuemer, Paul | Sicilian Defense: Old Sicilian | |
| Jul 10, 2025 | Zerfass | 0–1 | Klettke | Round 4: Zerfass, Otfried - Klettke, Wolfgang | Sicilian Defense: Grand Prix Attack | |
| Jul 9, 2025 | Bauer | ½–½ | Klettke | Round 3: Bauer, Burkhard - Klettke, Wolfgang | Queen's Pawn Game: Accelerated London System | |
| Jul 8, 2025 | Klettke | ½–½ | Broemel | Round 2: Klettke, Wolfgang - Broemel, Richard | Caro-Kann Defense: Gurgenidze System | |
| Jun 29, 2025 | Klettke | 1–0 | Lueders Vega | Round 9: Klettke, Wolfgang - Lueders Vega, Iago Ernst | Ruy Lopez: Exchange Variation | |
| Jun 29, 2025 | Muendoerfer | 1–0 | Klettke | Round 8: Muendoerfer, Sebastian - Klettke, Wolfgang | Indian Defense: Knights Variation | |
| Jun 29, 2025 | Klettke | ½–½ | Garbuszus | Round 7: Klettke, Wolfgang - Garbuszus, Juergen | Pirc Defense | |
| Jun 29, 2025 | Rezazadeh | 0–1 | Klettke | Round 6: Rezazadeh, Hossein - Klettke, Wolfgang | Queen's Gambit Declined | |
| Jun 29, 2025 | Klettke | 0–1 | Helmer | Round 5: Klettke, Wolfgang - Helmer, Jan | Sicilian Defense: Alapin Variation, Smith-Morra Declined | |
| Jun 29, 2025 | Trosin | 0–1 | Klettke | Round 4: Trosin, Moritz - Klettke, Wolfgang | Sicilian Defense: Alapin Variation, Smith-Morra Declined | |
| Jun 29, 2025 | Ansmann | 0–1 | Klettke | Round 3: Ansmann, Willi - Klettke, Wolfgang | Sicilian Defense: Closed | |
| Jun 29, 2025 | Klettke | 0–1 | Hagemann | Round 2: Klettke, Wolfgang - Hagemann, Sven | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Jun 29, 2025 | Klettke | 1–0 | Hampel | Round 1: Klettke, Wolfgang - Hampel, Thomas | Scandinavian Defense: Valencian Variation | |
| Jul 7, 2024 | Klettke | ½–½ | Waagener | Round 7: Klettke, Wolfgang - Waagener, Ulrich | Sicilian Defense: Alapin Variation | |
| Jul 6, 2024 | Cordes | ½–½ | Klettke | Round 6: Cordes, Lothar - Klettke, Wolfgang | King's Indian Defense: Normal Variation, King's Knight Variation | |
| Jul 5, 2024 | Klettke | 1–0 | Zechel | Round 5: Klettke, Wolfgang - Zechel, Rolf-Ruediger | Sicilian Defense: Moscow Variation, Main Line | |
| Jul 4, 2024 | Schober | 1–0 | Klettke | Round 4: Schober, Ralf - Klettke, Wolfgang | Sicilian Defense: Closed, Traditional | |
| Jul 3, 2024 | Klettke | 1–0 | Kynast | Round 3: Klettke, Wolfgang - Kynast, Reinhard | Sicilian Defense: Alapin Variation, Smith-Morra Declined | |
| Jul 2, 2024 | Heinz-Georg Roth | 0–1 | Klettke | Round 2: Heinz-Georg Roth - Klettke, Wolfgang | Sicilian Defense: Alapin Variation, Smith-Morra Declined | |
| Jul 1, 2024 | Klettke | ½–½ | Haase | Round 1: Klettke, Wolfgang - Haase, Reinhard | Rat Defense: Small Center Defense | |
| Jul 1, 2024 | Klettke | ½–½ | Jacob | Round 1: Klettke, Wolfgang - Jacob, Barbara | Rat Defense: Small Center Defense | |