Serge Witteveen
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| WchT U26 11th fin-B | 07/18/1964 | 0 | Poland |
Most Played Openings as White
| ECO | Opening | Games |
Most Played Openings as Black
| ECO | Opening | Games |
| C41 | Philidor's defence | 1 games |
| D00 | Queen's pawn game | 1 games |


Poland