De Koning
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Amsterdam1 | ??/??/1923 | 0 |  Netherlands |
| Amsterdam1 | ??/??/1920 | 0 | Netherlands |
De Koning Repertoire with White pieces (most played)
| ECO | Opening | Games |
De Koning Repertoire with Black pieces (most played)
| ECO | Opening | Games |
| D32 | Queen's Gambit Declined, Tarrasch defence | 1 games |
| B23 | Sicilian, closed | 1 games |
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