Player season source
Koellner Ruben Gideon · 2025-2026
Koellner Ruben Gideon's 2025-2026 season currently includes 1 event. Koellner Ruben Gideon scored 7.5/9 from 9 scored games (6 wins, 3 draws, 0 losses). The average listed opponent rating was 2368. The best listed performance rating was 2648.
- Season dates
- 2025-08-01 to 2026-07-31
- Profile
- Koellner Ruben Gideon
- Machine-readable JSON
- /api/players/koellner-ruben-gideon-ger-5/seasons/2025-2026
- Data note
- The season runs from 1 August to 31 July. Regular tournament games come from imported round-by-round game records where available. Team championship and cup rows are summarized from FLDE team-board result data.
Tournament summary
| Date | Event | Place | Type | Club/team | Rank | Points | Performance | Source |
|---|---|---|---|---|---|---|---|---|
| 02/04-06/04/2026 | grenke Chess Open - A-Open | Karlsruhe, DE | individual · Standard chess | 5 | 7.50 | 2648 | Source |
Game log
| Date | Event | Round | Color | Opponent | Opp. rating | Opponent club/team | Result |
|---|---|---|---|---|---|---|---|
| 2026-04-02 | grenke Chess Open - A-Open | 1 | black | Asici Poyraz Efe | 2110 | 1 | |
| 2026-04-02 | grenke Chess Open - A-Open | 2 | white | Van Batenburg Mees | 2225 | 1 | |
| 2026-04-02 | grenke Chess Open - A-Open | 3 | black | Zeller Frank | 2314 | 1 | |
| 2026-04-02 | grenke Chess Open - A-Open | 4 | white | Collins Adam | 2339 | 1 | |
| 2026-04-02 | grenke Chess Open - A-Open | 5 | black | Hong Andrew | 2598 | ½ | |
| 2026-04-02 | grenke Chess Open - A-Open | 6 | white | Willems Niels | 2388 | ½ | |
| 2026-04-02 | grenke Chess Open - A-Open | 7 | black | Kalogridis Antonios | 2386 | 1 | |
| 2026-04-02 | grenke Chess Open - A-Open | 8 | black | Karthik Venkataraman | 2594 | ½ | |
| 2026-04-02 | grenke Chess Open - A-Open | 9 | white | Abdurakhmonov Mukhammadali | 2362 | 1 |