Karsten Kostbar
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Koblenz-ch | 09/21/2004 | 1584 | Germany |
| GER-chT U20 | 12/??/2000 | 1082 | Germany |
| GER-chT U20 | ??/??/1999 | 664 | Germany |
| Rheinland-ch MA1 | 03/26/1999 | 422 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| C78 | Ruy Lopez, 5.O-O | 3 games |
| C01 | French, exchange variation | 3 games |
| B76 | Sicilian, dragon, Yugoslav attack, 7...O-O | 2 games |
| A85 | Dutch with c4 & Nc3 | 2 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B84 | Sicilian, Scheveningen (Paulsen), classical variation | 3 games |
| D02 | Queen's pawn game | 3 games |
| B50 | Sicilian | 2 games |
| D00 | Queen's pawn game | 2 games |


Germany