| 23 jul 2026 | Koehler, Gerhard, Dr. 2179 | Mueller, Michael 2065 | 0-1 | A13 Apertura Inglesa: Agincourt Defense, Bogoljubow Defense | German Chess Championship 2026 | Seniors 65+ | 51 | Ver |
| 22 jul 2026 | Rosen, Willy 2045 | Koehler, Gerhard, Dr. 2179 | ½-½ | B25 Defensa Siciliana: Closed | German Chess Championship 2026 | Seniors 65+ | 44 | Ver |
| 12 jul 2026 | Okrajek, Alexander 2199 | Koehler, Gerhard, Dr. 2179 | ½-½ | B20 Defensa Siciliana | 34. Off. Senioren-LEM Sachsen-Anhalt | 65+ | 30 | Ver |
| 10 jul 2026 | Kahe, Ralph 2135 | Koehler, Gerhard, Dr. 2179 | 0-1 | E32 Defensa Nimzoindia: Classical Variation | 34. Off. Senioren-LEM Sachsen-Anhalt | 65+ | 65 | Ver |
| 9 jul 2026 | Koehler, Gerhard, Dr. 2179 | Kliewe, Hans-Juergen 2019 | 1-0 | A11 Apertura Réti: Anglo-Slav Variation, Gurevich System | 34. Off. Senioren-LEM Sachsen-Anhalt | 65+ | 30 | Ver |
| 4 jul 2026 | Koehler, Gerhard, Dr. 2179 | Farrand, Tom 2077 | ½-½ | A10 Apertura Inglesa: Anglo-Dutch Defense | 34. Off. Senioren-LEM Sachsen-Anhalt | 65+ | 45 | Ver |
| 23 abr 2026 | Soderberg, Per 2050 | Koehler, Gerhard, Dr. 2165 | 0-1 | B51 Defensa Siciliana: Moscow Variation | FIDE World Senior Team Championships 2026 - Senior 65+ | 79 | Ver |
| 22 abr 2026 | Koehler, Gerhard, Dr. 2165 | Sibilio, Mario 2233 | ½-½ | A42 Defensa Moderna: Kotov Variation | FIDE World Senior Team Championships 2026 - Senior 65+ | 41 | Ver |
| 21 abr 2026 | Maryasin, Boris 2201 | Koehler, Gerhard, Dr. 2165 | 0-1 | B12 Defensa Caro-Kann: Advance Variation, Tal Variation | FIDE World Senior Team Championships 2026 - Senior 65+ | 30 | Ver |
| 20 abr 2026 | Koehler, Gerhard, Dr. 2165 | Schulz, Michael 2129 | 1-0 | A26 Apertura Inglesa: King's English Variation, Closed System, Full Symmetry | FIDE World Senior Team Championships 2026 - Senior 65+ | 46 | Ver |
| 1 nov 2025 | Sokolowski, Ryszard 2058 | Koehler, Gerhard, Dr. 2131 | 1-0 | E10 Defensa India: Anti-Nimzo-Indian | FIDE World Senior Championship 2025 | Open 65+ | 37 | Ver |
| 31 oct 2025 | Koehler, Gerhard, Dr. 2142 | Pogorelov, Ruslan 2258 | 0-1 | A30 Apertura Inglesa: Symmetrical Variation, Hedgehog Defense | FIDE World Senior Championship 2025 | Open 65+ | 57 | Ver |
| 30 oct 2025 | Roos, Louis 2285 | Koehler, Gerhard, Dr. 2142 | ½-½ | B13 Defensa Caro-Kann: Exchange Variation | FIDE World Senior Championship 2025 | Open 65+ | 51 | Ver |
| 29 oct 2025 | Koehler, Gerhard, Dr. 2142 | Kowalczuk, Wojciech 2017 | 1-0 | E12 Defensa India de Dama: Kasparov Variation | FIDE World Senior Championship 2025 | Open 65+ | 63 | Ver |
| 28 oct 2025 | Lebret, Jean-Michel 2016 | Koehler, Gerhard, Dr. 2142 | 0-1 | B26 Defensa Siciliana: Closed | FIDE World Senior Championship 2025 | Open 65+ | 43 | Ver |
| 26 oct 2025 | Koehler, Gerhard, Dr. 2142 | Ortega, Lexy 2333 | 0-1 | D32 Gambito de Dama rehusado: Tarrasch Defense | FIDE World Senior Championship 2025 | Open 65+ | 60 | Ver |
| 25 oct 2025 | Elguezabal Varela, Daniel 2319 | Koehler, Gerhard, Dr. 2142 | ½-½ | E10 Defensa India: Anti-Nimzo-Indian | FIDE World Senior Championship 2025 | Open 65+ | 56 | Ver |
| 23 oct 2025 | Mencinger, Vojko 2259 | Koehler, Gerhard, Dr. 2142 | 1-0 | C02 Defensa Francesa: Advance Variation, Wade Variation | FIDE World Senior Championship 2025 | Open 65+ | 47 | Ver |
| 29 sep 2025 | Ftacnik, Lubomir 2431 | Koehler, Gerhard, Dr. 2142 | ½-½ | E16 Defensa India de Dama: Capablanca Variation | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | 36 | Ver |