GA. Koelsche
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| US op | ??/??/1995 | 425 |  United States |
| US op active | ??/??/1995 | 1153 | United States |
| USA op | ??/??/1968 | 0 | United States |
| Hollywood op | ??/??/1954 | 0 | United States |
GA. Koelsche Repertoire with White pieces (most played)
| ECO | Opening | Games |
| B08 | Pirc, classical (two knights) system | 1 games |
| A14 | English, Neo-Catalan declined | 1 games |
| A09 | Reti opening | 1 games |
| A37 | English, symmetrical variation | 1 games |
GA. Koelsche Repertoire with Black pieces (most played)
| ECO | Opening | Games |
| E34 | Nimzo-Indian, classical, Noa variation | 1 games |
| E26 | Nimzo-Indian, Saemisch variation | 1 games |
| B74 | Sicilian, dragon, classical, 9.Nb3 | 1 games |
| E46 | Nimzo-Indian, 4.e3 O-O | 1 games |
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