| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. B Leszko vs D Haselbach |
| 0-1 | 43 | 2019 | Hungarian Team Championship 2018/19 | B30 Sicilian |
| 2. T Farkas vs B Leszko |
| ½-½ | 33 | 2019 | First Saturday IM February | C00 French Defense |
| 3. B Leszko vs Z Nemeth |
| 0-1 | 42 | 2019 | First Saturday IM February | C41 Philidor Defense |
| 4. M Bilous vs B Leszko |
| 1-0 | 25 | 2019 | First Saturday IM February | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 5. B Leszko vs A Dimitrova |
| 0-1 | 32 | 2019 | First Saturday IM February | A18 English, Mikenas-Carls |
| 6. M Lyell vs B Leszko |
| 1-0 | 46 | 2019 | First Saturday IM February | C02 French, Advance |
| 7. B Leszko vs A Pasti |
| 1-0 | 61 | 2019 | First Saturday IM February | A20 English |
| 8. J Terbe vs B Leszko |
| 1-0 | 69 | 2019 | First Saturday IM February | C07 French, Tarrasch |
| 9. B Leszko vs Z Ilincic |
| ½-½ | 30 | 2019 | First Saturday IM February | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 10. A Mihalik vs B Leszko |
| ½-½ | 70 | 2019 | First Saturday IM February | C03 French, Tarrasch |
| 11. B Leszko vs A Pasti |
| ½-½ | 54 | 2019 | First Saturday IM March | E04 Catalan, Open, 5.Nf3 |
| 12. A B Arfan vs B Leszko |
| ½-½ | 30 | 2019 | First Saturday IM March | C00 French Defense |
| 13. B Leszko vs M Lyell |
| ½-½ | 60 | 2019 | First Saturday IM March | A40 Queen's Pawn Game |
| 14. I Farago vs B Leszko |
| ½-½ | 66 | 2019 | First Saturday IM March | E17 Queen's Indian |
| 15. B Leszko vs T Farkas |
| ½-½ | 17 | 2019 | First Saturday IM March | C11 French |
| 16. S Fule vs B Leszko |
| ½-½ | 32 | 2019 | First Saturday IM March | C10 French |
| 17. B Leszko vs V Baidetskyi |
| 0-1 | 34 | 2019 | First Saturday IM March | B10 Caro-Kann |
| 18. F Gombocz Jr vs B Leszko |
| 1-0 | 59 | 2019 | First Saturday IM March | A13 English |
| 19. B Leszko vs N M To |
| 0-1 | 40 | 2019 | First Saturday IM March | C41 Philidor Defense |
| 20. B Erdos vs B Leszko |
| ½-½ | 64 | 2019 | Hungarian Team Championship 2018/19 | A04 Reti Opening |
| 21. B Leszko vs I Farago |
| 0-1 | 38 | 2019 | FSIM August | B40 Sicilian |
| 22. P Schreiner vs B Leszko |
| 1-0 | 50 | 2019 | 28th Donau Open | E06 Catalan, Closed, 5.Nf3 |
| 23. B Leszko vs Goryachkina |
| 0-1 | 75 | 2020 | Titled Tuesday intern op 29th Sept | C00 French Defense |
| 24. T Petenyi vs B Leszko |
| ½-½ | 18 | 2021 | 1st Vezerkepzo GM | A06 Reti Opening |
| 25. T Tancsa vs B Leszko |
| 0-1 | 27 | 2021 | 5th Vezerkepzo IM | C18 French, Winawer |
Kibitzing
