William Cornwall
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| US op | ??/??/1993 | 713 |  United States |
| USA-op | ??/??/1992 | 435 | United States |
| USA op | ??/??/1990 | 864 | United States |
| US op | 08/??/1989 | 737 | United States |
William Cornwall Repertoire with White pieces (most played)
| ECO | Opening | Games |
| B01 | Scandinavian (centre counter) defence | 1 games |
| A26 | English, closed system | 1 games |
| A14 | English, Neo-Catalan declined | 1 games |
| A10 | English opening | 1 games |
William Cornwall Repertoire with Black pieces (most played)
| ECO | Opening | Games |
| B09 | Pirc, Austrian attack | 2 games |
| B06 | Robatsch (modern) defence | 2 games |
| A03 | Bird's opening | 1 games |
| B07 | Pirc defence | 1 games |
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