| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Simagin vs C Jansen |
| 1-0 | 55 |
1965 |
W-ch6 sf01 corr | B16 Caro-Kann, Bronstein-Larsen Variation |
| 2. E Thiele vs C Jansen |
 | 1-0 | 28 |
1968 |
6th CC World Ch Final | D30 Queen's Gambit Declined |
| 3. C Jansen vs H Rittner |
 | 0-1 | 28 |
1968 |
6th CC World Ch Final | E53 Nimzo-Indian, 4.e3 |
| 4. J Ljungdahl vs C Jansen |
| ½-½ | 50 |
1968 |
6th CC World Ch Final | E45 Nimzo-Indian, 4.e3, Bronstein (Byrne) Variation |
| 5. Estrin vs C Jansen |
| 1-0 | 28 |
1968 |
6th CC World Ch Final | B67 Sicilian, Richter-Rauzer Attack, 7...a6 Defense, 8...Bd7 |
| 6. C Jansen vs Sevecek |
| 0-1 | 32 |
1968 |
6th CC World Ch Final | C93 Ruy Lopez, Closed, Smyslov Defense |
| 7. H De Carbonnel vs C Jansen |
| 0-1 | 41 |
1968 |
6th CC World Ch Final | E90 King's Indian |
| 8. C Jansen vs S Aarseth |
| 1-0 | 35 |
1968 |
6th CC World Ch Final | E46 Nimzo-Indian |
| 9. C Jansen vs N Karker |
| ½-½ | 29 |
1968 |
corr-6 | C45 Scotch Game |
| 10. C Jansen vs Zagorovsky |
| 0-1 | 29 |
1968 |
6th CC World Ch Final | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 11. G Sanakoev vs C Jansen |
 | 1-0 | 21 |
1968 |
6th CC World Ch Final | C93 Ruy Lopez, Closed, Smyslov Defense |
| 12. C Jansen vs Hybl |
| 0-1 | 29 |
1968 |
6th CC World Ch Final | B89 Sicilian |
| 13. Kauranen vs C Jansen |
| 1-0 | 44 |
1968 |
6th CC World Ch Final | C12 French, McCutcheon |
| 14. D Stern vs C Jansen |
| 1-0 | 35 |
1968 |
6th CC World Ch Final | A56 Benoni Defense |
| 15. C Jansen vs S Nyman |
| 0-1 | 35 |
1968 |
6th CC World Ch Final | D55 Queen's Gambit Declined |
| 16. J Kellner vs C Jansen |
| 1-0 | 28 |
1968 |
6th CC World Ch Final | B10 Caro-Kann |
| 17. V Shushpanov vs C Jansen |
| 1-0 | 32 |
2000 |
KB Czech Open | B06 Robatsch |
| 18. M Sebag vs C Jansen |
| 1-0 | 37 |
2006 |
Czech Open A | B06 Robatsch |
| 19. C Jansen vs D Arngrimsson |
| ½-½ | 43 |
2008 |
Euro Club Cup | A07 King's Indian Attack |
| 20. M Maki Uuro vs C Jansen |
| ½-½ | 15 |
2008 |
Euro Club Cup | A40 Queen's Pawn Game |
| 21. S Bjornsson vs C Jansen |
| 1-0 | 35 |
2008 |
Euro Club Cup | B06 Robatsch |
| 22. C Jansen vs L O'Toole |
| 1-0 | 51 |
2008 |
Euro Club Cup | A00 Uncommon Opening |
| 23. V Atlas vs C Jansen |
| ½-½ | 29 |
2008 |
Euro Club Cup | B06 Robatsch |
| 24. N Varholakova vs C Jansen |
| 0-1 | 33 |
2008 |
Euro Club Cup | B06 Robatsch |
| 25. C Jansen vs J Jens |
| ½-½ | 31 |
2008 |
Euro Club Cup | A07 King's Indian Attack |