John C Knudsen
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Knudsen-The World | 02/07/2003 | 0 | |
| Iowa m1 | ??/??/1973 | 0 |  United States |
| Iowa m2 | ??/??/1973 | 0 | United States |
| Iowa m3 | ??/??/1973 | 0 | United States |
Most Played Openings as White
| ECO | Opening | Games |
| A04 | Reti opening | 2 games |
| E59 | Nimzo-Indian, 4.e3, main line | 1 games |
| A03 | Bird's opening | 1 games |
| A06 | Reti opening | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| A00 | Polish (Sokolsky) opening | 2 games |
| A01 | Nimzovich-Larsen attack | 1 games |
| E20 | Nimzo-Indian defence | 1 games |
| A45 | Queen's pawn game | 1 games |
