| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. I Jansen vs L Szaday |
| ½-½ | 46 | 1968 | Piotrkow Trybunalski (Women) | C44 King's Pawn Game |
| 2. E Polihroniade vs I Jansen |
| 1-0 | 30 | 1968 | Danlon (Women) | B46 Sicilian, Taimanov Variation |
| 3. I Jansen vs G Baumstark |
| 1-0 | 56 | 1968 | Danlon (Women) | C44 King's Pawn Game |
| 4. I Jansen vs C Vreeken |
| ½-½ | 35 | 1969 | Hoogovens (Women) | B32 Sicilian |
| 5. I Jansen vs U Wasnetsky |
| 1-0 | 78 | 1969 | Lublin Olympiad (Women) | B89 Sicilian |
| 6. I Jansen vs M Ager |
| 1-0 | 25 | 1969 | Lublin Olympiad (Women) | B23 Sicilian, Closed |
| 7. S Mayer vs I Jansen |
| 1-0 | 45 | 1969 | Lublin Olympiad (Women) | A84 Dutch |
| 8. I Jansen vs M Ivanka |
| ½-½ | 26 | 1969 | Lublin Olympiad (Women) | B41 Sicilian, Kan |
| 9. E Polihroniade vs I Jansen |
| ½-½ | 24 | 1969 | Lublin Olympiad (Women) | C00 French Defense |
| 10. I Jansen vs M Haahr |
| 0-1 | 36 | 1969 | Lublin Olympiad (Women) | C41 Philidor Defense |
| 11. I Jansen vs W Nowarra |
| ½-½ | 43 | 1969 | Lublin Olympiad (Women) | B43 Sicilian, Kan, 5.Nc3 |
| 12. C Vanderbeken vs I Jansen |
| ½-½ | 35 | 1969 | Lublin Olympiad (Women) | C01 French, Exchange |
| 13. I Jansen vs V Asenova |
| 0-1 | 19 | 1969 | Lublin Olympiad (Women) | C44 King's Pawn Game |
| 14. M Brannagan vs I Jansen |
| 0-1 | 24 | 1969 | Lublin Olympiad (Women) | B20 Sicilian |
| 15. I Jansen vs T Stadler |
| 0-1 | 35 | 1969 | Lublin Olympiad (Women) | B02 Alekhine's Defense |
| 16. A Kushnir vs I Jansen |
| 1-0 | 22 | 1969 | Lublin Olympiad (Women) | A15 English |
| 17. I Jansen vs N Gaprindashvili |
| 0-1 | 35 | 1972 | Skopje Olympiad (Women) qual-1 | B06 Robatsch |
| 18. R M Bruce vs I Jansen |
| ½-½ | 28 | 1972 | Pernik Zonal (Women)+ | A10 English |
| 19. I Jansen vs A Dragasevic |
| 1-0 | 49 | 1972 | Pernik Zonal (Women) | B70 Sicilian, Dragon Variation |
| 20. V Shikova vs I Jansen |
| ½-½ | 38 | 1972 | Pernik Zonal (Women) | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 21. I Jansen vs E Karakas |
| 0-1 | 28 | 1972 | Pernik Zonal (Women) | C19 French, Winawer, Advance |
| 22. E Trojanska vs I Jansen |
| 1-0 | 47 | 1972 | Pernik Zonal (Women) | A07 King's Indian Attack |
| 23. I Jansen vs S Mayer |
| 0-1 | 35 | 1972 | Pernik Zonal (Women) | C16 French, Winawer |
| 24. G Markovic vs I Jansen |
| 1-0 | 39 | 1972 | Pernik Zonal (Women) | A07 King's Indian Attack |
| 25. I Jansen vs G Baumstark |
| ½-½ | 24 | 1972 | Pernik Zonal (Women) | C45 Scotch Game |
Kibitzing
