Game |
| Result | Moves |
Year | Event/Locale | Opening |
1. B Leussen vs W Gudehus |
| 1-0 | 34 | 1900 | Munich | C28 Vienna Game |
2. B Leussen vs Olland |
| 1-0 | 55 | 1900 | Olland-Leussen Match 1900/01 | B45 Sicilian, Taimanov |
3. B Leussen vs NN |
| 1-0 | 31 | 1900 | Blindfold simul, 6b | C30 King's Gambit Declined |
4. Olland vs B Leussen |
| ½-½ | 29 | 1901 | Olland-Leussen Match 1900/01 | C67 Ruy Lopez |
5. Olland vs B Leussen |
 | 1-0 | 37 | 1901 | Olland-Leussen Match 1900/01 | C67 Ruy Lopez |
6. B Leussen vs Olland |
| ½-½ | 44 | 1901 | Olland-Leussen Match 1900/01 | C01 French, Exchange |
7. B Leussen vs Olland |
| 1-0 | 22 | 1901 | Olland-Leussen Match 1900/01 | C30 King's Gambit Declined |
8. A van Foreest vs B Leussen |
| ½-½ | 48 | 1901 | 29th DCA Congress, Haarlem | C50 Giuoco Piano |
9. G Exner vs B Leussen |
| ½-½ | 65 | 1901 | 29th DCA Congress, Haarlem | D37 Queen's Gambit Declined |
10. B Leussen vs J W te Kolste |
| 0-1 | 27 | 1901 | 29th DCA Congress, Haarlem | C84 Ruy Lopez, Closed |
11. Olland vs B Leussen |
| 0-1 | 46 | 1901 | 29th DCA Congress, Haarlem | C54 Giuoco Piano |
12. B Leussen vs N Mannheimer |
| ½-½ | 45 | 1901 | 29th DCA Congress, Haarlem | C87 Ruy Lopez |
13. B Leussen vs J Esser |
 | 1-0 | 20 | 1901 | 29th DCA Congress, Haarlem | C67 Ruy Lopez |
14. B Leussen vs W Meiners |
| 1-0 | 34 | 1901 | 29th DCA Congress, Haarlem | C84 Ruy Lopez, Closed |
15. R Loman vs B Leussen |
| 0-1 | 33 | 1901 | 29th DCA Congress, Haarlem | C78 Ruy Lopez |
16. B Leussen vs D Bleijkmans |
| 1-0 | 30 | 1901 | 29th DCA Congress, Haarlem | C10 French |
17. B Leussen vs J Esser |
 | 1-0 | 15 | 1901 | 3 player tournament | C26 Vienna |
18. B Leussen vs Olland |
| 1-0 | 34 | 1901 | 3 player tournament | C30 King's Gambit Declined |
19. Olland vs B Leussen |
| 1-0 | 42 | 1901 | 3 player tournament | C91 Ruy Lopez, Closed |
20. F Malthan vs B Leussen |
| 0-1 | 44 | 1902 | DSB-13.Kongress Hauptturnier A | A02 Bird's Opening |
21. B Leussen vs B Gregory |
| 1-0 | 24 | 1902 | DSB-13.Kongress Hauptturnier A | C14 French, Classical |
22. G Exner vs B Leussen |
| 1-0 | 39 | 1902 | DSB-13.Kongress Hauptturnier A | C41 Philidor Defense |
23. W John vs B Leussen |
| 1-0 | 29 | 1902 | DSB-13.Kongress Hauptturnier A | C41 Philidor Defense |
24. M Brody vs B Leussen |
| ½-½ | 27 | 1902 | DSB-13.Kongress Hauptturnier A | D08 Queen's Gambit Declined, Albin Counter Gambit |
25. B Leussen vs B Kagan |
| 1-0 | 41 | 1902 | DSB-13.Kongress Hauptturnier A | B73 Sicilian, Dragon, Classical |