| Name: | O. Dethlefsen |
| Federation: |  |
| Years: | 1993 - 1994 |
| Total Games: | 8 |
| Wins: | 0 (0 %) |
| Draws: | 0 (0 %) |
| Losses: | 8 (100 %) |
| Score: | 0 % |
| Tournament | Date | Elo Avg. | Country |
| JBLN West 9394 | ??/??/1993 | 109 |  Germany |
| ECO | Opening | Games |
| B83 | Sicilian, Scheveningen, 6.Be2 | 1 games |
| E61 | King's Indian defence, 3.Nc3 | 1 games |
| B02 | Alekhine's defence | 1 games |
| C50 | King's pawn game | 1 games |
| ECO | Opening | Games |
| B32 | Sicilian defence | 1 games |
| C02 | French, advance variation | 1 games |
| B24 | Sicilian, closed | 1 games |
| C33 | King's gambit accepted | 1 games |
| White | ELO W | Black | ELO B | Result | Moves | ECO | Date | Tournament | View |
| Dethlefsen, O | Krueger, A | 0-1  |
21 | B83 | 1994 | JBLN West 9394 |
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| Dethlefsen, O | Haber, T | 0-1 |
19 | E61 | 1994 | JBLN West 9394 |
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| Margraf, D | Dethlefsen, O | 1-0 |
32 | B32 | 1994 | JBLN West 9394 |
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| Bierwald, J | Dethlefsen, O | 1-0 |
22 | C02 | 1994 | JBLN West 9394 |
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| Duell, D | Dethlefsen, O | 1-0 |
15 | B24 | 1994 | JBLN West 9394 |
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| Dethlefsen, O | Wisnewski, C | 0-1 |
25 | B02 | 1993 | JBLN West 9394 |
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| Dethlefsen, O | Stange, S | 0-1 |
46 | C50 | 1993 | JBLN West 9394 |
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| Rakow, T | Dethlefsen, O | 1-0 |
26 | C33 | 1993 | JBLN West 9394 |
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