| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. M Leski vs I Gazik |
| 0-1 | 28 | 1979 | World Junior Championship | A07 King's Indian Attack |
| 2. M Leski vs J R Smith |
| 1-0 | 49 | 1980 | European Junior Championship 1980/81 | A14 English |
| 3. D Lapan vs M Leski |
| ½-½ | 53 | 1980 | European Junior Championship 1980/81 | B07 Pirc |
| 4. M Leski vs T Karolyi |
| 1-0 | 25 | 1980 | European Junior Championship 1980/81 | A14 English |
| 5. Pigusov vs M Leski |
| 0-1 | 41 | 1980 | European Junior Championship 1980/81 | E63 King's Indian, Fianchetto, Panno Variation |
| 6. W N Watson vs M Leski |
| ½-½ | 13 | 1980 | European Junior Championship 1980/81 | B07 Pirc |
| 7. M Leski vs R Akesson |
| 0-1 | 20 | 1980 | European Junior Championship 1980/81 | A04 Reti Opening |
| 8. M Leski vs J Arnason |
| 0-1 | 37 | 1980 | European Junior Championship 1980/81 | A34 English, Symmetrical |
| 9. G Franzoni vs M Leski |
| ½-½ | 8 | 1980 | European Junior Championship 1980/81 | B07 Pirc |
| 10. M Leski vs O Cvitan |
| 0-1 | 46 | 1980 | European Junior Championship 1980/81 | D34 Queen's Gambit Declined, Tarrasch |
| 11. P Stigar vs M Leski |
| 1-0 | 39 | 1980 | European Junior Championship 1980/81 | E20 Nimzo-Indian |
| 12. M Leski vs D Michiels |
| ½-½ | 59 | 1980 | European Junior Championship 1980/81 | A04 Reti Opening |
| 13. M Leski vs P Pandavos |
| ½-½ | 56 | 1980 | European Junior Championship 1980/81 | A34 English, Symmetrical |
| 14. D Heilinger vs M Leski |
| ½-½ | 13 | 1981 | European Junior Championship 1980/81 | A46 Queen's Pawn Game |
| 15. P Boersma vs M Leski |
| 1-0 | 63 | 1981 | Dortmund-B | A56 Benoni Defense |
| 16. E Krueger vs M Leski |
| 1-0 | 50 | 1981 | Dortmund-B | E75 King's Indian, Averbakh, Main line |
| 17. J Konikowski vs M Leski |
| ½-½ | 35 | 1981 | Dortmund-B | B07 Pirc |
| 18. P Ostermeyer vs M Leski |
| ½-½ | 31 | 1981 | Dortmund-B | D06 Queen's Gambit Declined |
| 19. M Leski vs K Berg |
| ½-½ | 11 | 1981 | Dortmund-B | C62 Ruy Lopez, Old Steinitz Defense |
| 20. M Leski vs B Boehmfeldt |
| ½-½ | 42 | 1981 | Dortmund-B | A04 Reti Opening |
| 21. M Leski vs B De Bruycker |
| ½-½ | 19 | 1981 | Dortmund-B | A00 Uncommon Opening |
| 22. M Leski vs J Boehm |
| 1-0 | 33 | 1981 | Dortmund-B | A00 Uncommon Opening |
| 23. R Woller vs M Leski |
| 1-0 | 51 | 1981 | Dortmund-B | B08 Pirc, Classical |
| 24. M Leski vs M Svenn |
| ½-½ | 31 | 1981 | Dortmund-B | D79 Neo-Grunfeld, 6.O-O, Main line |
| 25. M Leski vs P Backwinkel |
| 0-1 | 57 | 1981 | Dortmund-B | A00 Uncommon Opening |
Kibitzing
