Collin Wierum
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| GER-ch U25 | 05/26/2007 | 1579 | Germany |
| Niedersachsen-chT U16 | 05/17/2007 | 1339 | Germany |
| GER North-chT U16 | 08/26/2006 | 1188 | Germany |
| GER-ch op U25 | 06/04/2006 | 1570 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| C50 | King's pawn game | 2 games |
| C57 | Two knights defence | 2 games |
| C24 | Bishop's opening, Berlin defence | 2 games |
| B76 | Sicilian, dragon, Yugoslav attack, 7...O-O | 2 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B01 | Scandinavian (centre counter) defence | 9 games |
| A86 | Dutch with c4 & g3 | 3 games |
| A85 | Dutch with c4 & Nc3 | 2 games |
| A80 | Dutch | 2 games |


Germany