| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. A Cichocki vs L Ostrowski |
| 0-1 | 23 |
1986 |
Dreszer mem | A64 Benoni, Fianchetto, 11...Re8 |
| 2. Blatny vs L Ostrowski |
| 0-1 | 41 |
1987 |
Poznan | C56 Two Knights |
| 3. W Schmidt vs L Ostrowski |
| 1-0 | 36 |
1987 |
Poznan | E06 Catalan, Closed, 5.Nf3 |
| 4. L Ostrowski vs Garcia |
| ½-½ | 64 |
1988 |
Wijk aan Zee | A81 Dutch |
| 5. Wojtkiewicz vs L Ostrowski |
| 1-0 | 30 |
1989 |
07 | A13 English |
| 6. M Brodsky vs L Ostrowski |
| 1-0 | 77 |
1995 |
Riga op | B40 Sicilian |
| 7. A Macchia vs L Ostrowski |
| 1-0 | 29 |
1997 |
ICCF - corr | B43 Sicilian, Kan, 5.Nc3 |
| 8. P Verdier vs L Ostrowski |
| 1-0 | 31 |
1997 |
ICCF - corr | D45 Queen's Gambit Declined Semi-Slav |
| 9. L Ostrowski vs L Jakobetz |
| 0-1 | 49 |
1997 |
ICCF - corr | A10 English |
| 10. W Hase vs L Ostrowski |
| 1-0 | 31 |
1997 |
ICCF - corr | D37 Queen's Gambit Declined |
| 11. P Salcedo Mederos vs L Ostrowski |
| ½-½ | 17 |
1997 |
ICCF - corr | E20 Nimzo-Indian |
| 12. L Ostrowski vs R V M Hall |
| ½-½ | 34 |
1997 |
ICCF - corr | A97 Dutch, Ilyin-Genevsky |
| 13. M De Almeida vs L Ostrowski |
| ½-½ | 57 |
1997 |
ICCF - corr | C78 Ruy Lopez |
| 14. L Ostrowski vs G Schoeneberg |
| 1-0 | 28 |
1997 |
ICCF - corr | A70 Benoni, Classical with 7.Nf3 |
| 15. L Ostrowski vs M Gunnarsson |
| ½-½ | 29 |
1997 |
ICCF - corr | C81 Ruy Lopez, Open, Howell Attack |
| 16. A Bjuhr vs L Ostrowski |
| 1-0 | 38 |
1997 |
ICCF - corr | E62 King's Indian, Fianchetto |
| 17. L Ostrowski vs D Reppmann |
| ½-½ | 17 |
1997 |
ICCF - corr | A81 Dutch |
| 18. L Ostrowski vs V Bendersky |
| 1-0 | 24 |
1997 |
ICCF - corr | A35 English, Symmetrical |
| 19. L Ostrowski vs A Matt |
| 1-0 | 11 |
1997 |
ICCF - corr | E66 King's Indian, Fianchetto, Yugoslav Panno |
| 20. Ponomariov vs L Ostrowski |
| ½-½ | 52 |
1998 |
Swidnica op rap | C45 Scotch Game |
| 21. L Ostrowski vs Oral |
| 0-1 | 40 |
1999 |
CZE-chT 9900 | A04 Reti Opening |
| 22. Zdzislaw Wyrwa vs L Ostrowski |
| 0-1 | 35 |
1999 |
Wisla Hugart op | A07 King's Indian Attack |
| 23. W Schmidt vs L Ostrowski |
| ½-½ | 22 |
1999 |
POL-chT 55th | D58 Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst |
| 24. R Kempinski vs L Ostrowski |
| 0-1 | 23 |
1999 |
55th chTeam-POL | E11 Bogo-Indian Defense |
| 25. P Haba vs L Ostrowski |
| ½-½ | 24 |
1999 |
CZE-chT 9900 | E01 Catalan, Closed |