Games played by Ralf Kotter
| White | ELO W | Black | ELO B | Result | Moves | ECO | Date | Tournament | View |
| Sandmann, B | Kotter, R | 0-1  |
39 | D78 | 1991 | NRW-Liga II 9091 |
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| Schaefer, J | Kotter, R | 1-0 |
47 | B30 | 1991 | NRW-Liga II 9091 |
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| Dresen, U | 2290 | Kotter, R | 1-0 |
29 | E70 | 1991 | BL2-W qual |
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| Schebler, G | 2310 | Kotter, R | 0-1 |
1991 | NRW-Liga II 9091 |
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| Franklin, M | 2285 | Kotter, R | 0-1 |
50 | A47 | 1991 | Hastings Challengers 9192 |
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| Kotter, R | Schlichtmann, G | 2250 | 1-0 |
35 | B63 | 1991 | NRW-Liga II 9091 |
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| Kotter, R | Hanf, T | 1-0 |
34 | C52 | 1990 | NRW-Liga I 8990 |
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| Kotter, R | Hoenig, A | ½-½ |
59 | B03 | 1990 | NRW-Liga I 8990 |
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| Kotter, R | Linnemann, R | 2295 | ½-½ |
18 | C92 | 1990 | NRW-Liga I 8990 |
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| Kotter, R | Stillger, B | 1-0 |
33 | B78 | 1990 | NRW-Liga I 8990 |
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| Dassel, U | Kotter, R | ½-½ |
51 | B50 | 1990 | NRW-Liga I 8990 |
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| Dinstuhl, V | Kotter, R | 0-1 |
34 | E71 | 1990 | NRW-Liga I 8990 |
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| Ransiek, C | Kotter, R | 0-1 |
50 | A65 | 1990 | NRW-Liga I 8990 |
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| Opalka, G | Kotter, R | 1-0 |
59 | B20 | 1990 | NRW-Liga I 8990 |
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| Gross, R | Kotter, R | ½-½ |
37 | A48 | 1990 | NRW-Liga I 8990 |
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| Kotter, R | Krasenkow, M | 2535 | 0-1 |
33 | B31 | 1990 | Hastings Challengers 9091 |
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