M. Bartoszewicz
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| POL-chT2 | ??/??/1997 | 1976 | Poland |
| Augustow op-B | ??/??/1996 | 1392 | Poland |
Most Played Openings as White
| ECO | Opening | Games |
| B33 | Sicilian defence | 2 games |
| B08 | Pirc, classical (two knights) system | 1 games |
| B03 | Alekhine's defence | 1 games |
| B56 | Sicilian | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B84 | Sicilian, Scheveningen (Paulsen), classical variation | 2 games |
| A15 | English, 1...Nf6 (Anglo-Indian defense) | 1 games |
| B87 | Sicilian, Sozin with ...a6 and ...b5 | 1 games |
| B86 | Sicilian, Sozin attack | 1 games |


Poland