| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. R Janssen vs Jonkman |
| 0-1 | 23 |
1995 |
It open | C31 King's Gambit Declined, Falkbeer Counter Gambit |
| 2. R Janssen vs M De Heer |
| 0-1 | 52 |
1995 |
Ch Netherlands junio | C36 King's Gambit Accepted, Abbazia Defense |
| 3. Oral vs R Janssen |
| ½-½ | 26 |
1996 |
Hengelo U20 | B22 Sicilian, Alapin |
| 4. R Janssen vs Bacrot |
| 0-1 | 53 |
1997 |
Hoogovens B, Wijk aan Zee NED | A29 English, Four Knights, Kingside Fianchetto |
| 5. C Kamstra vs R Janssen |
| 0-1 | 18 |
1998 |
Ch Netherlands 1/2 f | C31 King's Gambit Declined, Falkbeer Counter Gambit |
| 6. R Janssen vs Zhong Zhang |
| 0-1 | 33 |
1998 |
World Junior Championships | A04 Reti Opening |
| 7. Leitao vs R Janssen |
| ½-½ | 117 |
1999 |
Hoogovens B | E39 Nimzo-Indian, Classical, Pirc Variation |
| 8. R Janssen vs Barsov |
| 1-0 | 33 |
1999 |
Haarlem AKN op 8th | E04 Catalan, Open, 5.Nf3 |
| 9. R Janssen vs Glek |
| 0-1 | 57 |
1999 |
Hoogovens B Tournament | A15 English |
| 10. R Janssen vs Van der Wiel |
| ½-½ | 23 |
1999 |
Hoogovens B | A09 Reti Opening |
| 11. Nijboer vs R Janssen |
| 1-0 | 36 |
1999 |
Hoogovens B Tournament | B76 Sicilian, Dragon, Yugoslav Attack |
| 12. R Janssen vs M Brodsky |
| ½-½ | 38 |
1999 |
Hoogovens-B | A15 English |
| 13. R Janssen vs Van Den Doel |
| ½-½ | 37 |
1999 |
Hoogovens B Tournament | A13 English |
| 14. Lputian vs R Janssen |
| 1-0 | 36 |
1999 |
Hoogovens B Tournament | E12 Queen's Indian |
| 15. R Janssen vs A Weisbrod |
| 1-0 | 55 |
1999 |
VK Gr1 9900 | D02 Queen's Pawn Game |
| 16. R Janssen vs C Bauer |
| 1-0 | 69 |
1999 |
Hoogovens B | A04 Reti Opening |
| 17. S Ionov vs R Janssen |
| 1-0 | 34 |
1999 |
Hoogovens B Tournament | E39 Nimzo-Indian, Classical, Pirc Variation |
| 18. F Kuijpers vs R Janssen |
| 0-1 | 34 |
2000 |
HZ Open | A29 English, Four Knights, Kingside Fianchetto |
| 19. R Janssen vs J De Wolf |
| 1-0 | 55 |
2000 |
HZ Open | E00 Queen's Pawn Game |
| 20. R Janssen vs T Gelashvili |
| 1-0 | 51 |
2000 |
World University-ch 6th | E00 Queen's Pawn Game |
| 21. T Berens vs R Janssen |
| 0-1 | 39 |
2000 |
HZ Open | A50 Queen's Pawn Game |
| 22. T Gelashvili vs R Janssen |
| 1-0 | 28 |
2000 |
Vlissingen HZ op 4th | B20 Sicilian |
| 23. R Janssen vs Daniel Sadkowski |
| ½-½ | 39 |
2000 |
Belgian Interteams -1 | D17 Queen's Gambit Declined Slav |
| 24. R Janssen vs Efimenko |
| ½-½ | 53 |
2001 |
Stork YM | D37 Queen's Gambit Declined |
| 25. R Janssen vs W Paulis |
| 1-0 | 27 |
2001 |
HZ Open | E08 Catalan, Closed |