Udo Marienfeld
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Dortmund op1 | 03/06/2006 | 1550 |  Germany |
| Dortmund op | 01/19/2006 | 1471 | Germany |
| Dortmund-ch | 02/28/2005 | 1622 | Germany |
Udo Marienfeld Repertoire with White pieces (most played)
| ECO | Opening | Games |
| A00 | Polish (Sokolsky) opening | 2 games |
| B86 | Sicilian, Sozin attack | 2 games |
| B34 | Sicilian, accelerated fianchetto, exchange variation | 1 games |
| C41 | Philidor's defence | 1 games |
Udo Marienfeld Repertoire with Black pieces (most played)
| ECO | Opening | Games |
| B50 | Sicilian | 2 games |
| B45 | Sicilian, Taimanov variation | 1 games |
| D90 | Gruenfeld, Three knights variation | 1 games |
| D24 | Queen's Gambit Accepted, 4.Nc3 | 1 games |
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