Janusz Koscielski
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| 28th Czech Open A 2017 | 07/21/2017 | 2309 | Czech Republic |
| GRENKE Chess Open 2017 | 04/13/2017 | 2374 | Germany |
| NRW Class1 0607 | 09/17/2006 | 1844 | Germany |
| Bad Zwesten op 10th | 01/02/2006 | 1428 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| B07 | Pirc defence | 14 games |
| B01 | Scandinavian (centre counter) defence | 13 games |
| B19 | Caro-Kann, classical, 7...Nd7 | 12 games |
| C48 | Four knights, Spanish variation | 11 games |
Most Played Openings as Black
| ECO | Opening | Games |
| E97 | King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation) | 13 games |
| B22 | Sicilian, Alapin's variation (2.c3) | 12 games |
| B90 | Sicilian, Najdorf | 11 games |
| E92 | King's Indian, classical variation | 8 games |
Germany
Male
FIDE ID:

Czech Republic