Tatjana Kostjuk
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Bykova mem-B | 12/07/2005 | 2213 | Russian Federation |
| RUS-ch 1L (Women) | ??/??/2000 | 1326 | Russian Federation |
| Independence Cup op | ??/??/1999 | 1792 | Ukraine |
| UKR-ch U16 Girls | ??/??/1998 | 855 | Ukraine |
Tatjana Kostjuk Opening Repertoire with White pieces
| ECO | Opening | Games |
| B23 | Sicilian, closed | 4 games |
| E68 | King's Indian, fianchetto, classical variation, 8.e4 | 3 games |
| A81 | Dutch defence | 3 games |
| D45 | Queen's Gambit Declined semi-Slav, 5.e3 | 2 games |
Tatjana Kostjuk Opening Repertoire with Black pieces
| ECO | Opening | Games |
| C45 | Scotch game | 3 games |
| B01 | Scandinavian (centre counter) defence | 3 games |
| A57 | Benko gambit | 2 games |
| A58 | Benko gambit accepted | 2 games |


Russian Federation
Ukraine