| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. R Janssen vs R Cuijpers |
| 1-0 | 32 |
1992 |
Hengelo op-C | C57 Two Knights |
| 2. R Janssen vs Jonkman |
| 0-1 | 23 |
1995 |
It open | C31 King's Gambit Declined, Falkbeer Counter Gambit |
| 3. R Janssen vs M De Heer |
| 0-1 | 52 |
1995 |
Ch Netherlands junio | C36 King's Gambit Accepted, Abbazia Defense |
| 4. Oral vs R Janssen |
| ½-½ | 26 |
1996 |
Hengelo U20 | B22 Sicilian, Alapin |
| 5. T Karatekin vs R Janssen |
 | 1-0 | 32 |
1997 |
Europe Juniors, Tallinn | A07 King's Indian Attack |
| 6. R Janssen vs Bacrot |
| 0-1 | 53 |
1997 |
Hoogovens B, Wijk aan Zee NED | A29 English, Four Knights, Kingside Fianchetto |
| 7. R Janssen vs Luc Palmans |
| ½-½ | 52 |
1998 |
Lommel Summer op | D78 Neo-Grunfeld, 6.O-O c6 |
| 8. C Kamstra vs R Janssen |
| 0-1 | 18 |
1998 |
Ch Netherlands 1/2 f | C31 King's Gambit Declined, Falkbeer Counter Gambit |
| 9. R Janssen vs Zhong Zhang |
| 0-1 | 33 |
1998 |
World Junior Championships | A04 Reti Opening |
| 10. Leitao vs R Janssen |
| ½-½ | 117 |
1999 |
Hoogovens B | E39 Nimzo-Indian, Classical, Pirc Variation |
| 11. S Kuemin vs R Janssen |
| ½-½ | 54 |
1999 |
Wch U20 | E20 Nimzo-Indian |
| 12. Akobian vs R Janssen |
| 0-1 | 42 |
1999 |
Wch U20 | D14 Queen's Gambit Declined Slav, Exchange Variation |
| 13. R Janssen vs Glek |
| 0-1 | 57 |
1999 |
Hoogovens B Tournament | A15 English |
| 14. Chandler vs R Janssen |
| 1-0 | 34 |
1999 |
QN..0.00078 | C26 Vienna |
| 15. R Janssen vs Van der Wiel |
| ½-½ | 23 |
1999 |
Hoogovens B | A09 Reti Opening |
| 16. Nijboer vs R Janssen |
| 1-0 | 36 |
1999 |
Hoogovens B Tournament | B76 Sicilian, Dragon, Yugoslav Attack |
| 17. R Janssen vs M Brodsky |
| ½-½ | 38 |
1999 |
Hoogovens-B | A15 English |
| 18. R Janssen vs Van Den Doel |
| ½-½ | 37 |
1999 |
Hoogovens B Tournament | A13 English |
| 19. R Janssen vs M Golubev |
| 0-1 | 36 |
1999 |
Dieren op | E97 King's Indian |
| 20. Lputian vs R Janssen |
| 1-0 | 36 |
1999 |
Hoogovens B Tournament | E12 Queen's Indian |
| 21. R Janssen vs C Bauer |
| 1-0 | 69 |
1999 |
Hoogovens B | A04 Reti Opening |
| 22. Rudi Gijbels vs R Janssen |
| ½-½ | 28 |
1999 |
Lommel op | B32 Sicilian |
| 23. R Janssen vs Barsov |
| 1-0 | 33 |
1999 |
Haarlem AKN op 8th | E04 Catalan, Open, 5.Nf3 |
| 24. R Janssen vs A Weisbrod |
| 1-0 | 55 |
1999 |
VK Gr1 9900 | D02 Queen's Pawn Game |
| 25. S Ionov vs R Janssen |
| 1-0 | 34 |
1999 |
Hoogovens B Tournament | E39 Nimzo-Indian, Classical, Pirc Variation |