| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. R Ekstroem vs H Tjarnemo |
| ½-½ | 35 |
1980 |
Eksjo-B 8th | C42 Petrov Defense |
| 2. R Ekstroem vs F Braga |
| ½-½ | 28 |
1981 |
10s, Graz WCh-Jr-tt [Hiarcs 7.32 | C11 French |
| 3. R Ekstroem vs Sosonko |
| ½-½ | 23 |
1984 |
Zurich | B30 Sicilian |
| 4. R Ekstroem vs Matulovic |
| ½-½ | 26 |
1987 |
Banja Luka | B49 Sicilian, Taimanov Variation |
| 5. R Ekstroem vs F Izeta Txabarri |
| ½-½ | 33 |
1989 |
EU-chT (Men) | C78 Ruy Lopez |
| 6. R Ekstroem vs G Timoshchenko |
| ½-½ | 17 |
1995 |
Mitropa Cup | A48 King's Indian |
| 7. R Ekstroem vs N Giertz |
| ½-½ | 41 |
1995 |
Ch Switzerland | C27 Vienna Game |
| 8. Sosonko vs R Ekstroem |
| ½-½ | 27 |
1995 |
Mitropa Cup NED-SUI | D18 Queen's Gambit Declined Slav, Dutch |
| 9. Plachetka vs R Ekstroem |
| ½-½ | 16 |
2000 |
Mitropa Cup | D41 Queen's Gambit Declined, Semi-Tarrasch |
| 10. R Ekstroem vs I Ibragimov |
| ½-½ | 63 |
2000 |
4th OIBM in Bad Wiessee | B07 Pirc |
| 11. R Ekstroem vs Epishin |
| ½-½ | 28 |
2000 |
4th OIBM in Bad Wiessee | B14 Caro-Kann, Panov-Botvinnik Attack |
| 12. V Golod vs R Ekstroem |
| ½-½ | 33 |
2001 |
2nd IECC | D37 Queen's Gambit Declined |
| 13. R Ekstroem vs Meduna |
| ½-½ | 38 |
2001 |
EuTCh | B17 Caro-Kann, Steinitz Variation |
| 14. R Ekstroem vs V Chuchelov |
| ½-½ | 49 |
2001 |
2nd IECC | B22 Sicilian, Alapin |
| 15. R Ekstroem vs P Kotsur |
| ½-½ | 52 |
2001 |
Master Open | A33 English, Symmetrical |
| 16. N Kelecevic vs R Ekstroem |
| ½-½ | 19 |
2001 |
ch-SUI | D37 Queen's Gambit Declined |
| 17. R Ekstroem vs G Kuzmin |
| ½-½ | 16 |
2001 |
2nd IECC | C56 Two Knights |
| 18. Hebden vs R Ekstroem |
| ½-½ | 43 |
2001 |
Master Open | D30 Queen's Gambit Declined |
| 19. R Ekstroem vs R Gerber |
| ½-½ | 39 |
2001 |
ch-SUI | D37 Queen's Gambit Declined |
| 20. R Kempinski vs R Ekstroem |
| ½-½ | 55 |
2001 |
2nd IECC | D97 Grunfeld, Russian |
| 21. F Hindermann vs R Ekstroem |
| ½-½ | 38 |
2001 |
ch-SUI | B22 Sicilian, Alapin |
| 22. R Ekstroem vs V Tukmakov |
| ½-½ | 47 |
2001 |
Zuerich op | B22 Sicilian, Alapin |
| 23. R Ekstroem vs M Kobalia |
| ½-½ | 44 |
2001 |
2nd IECC | B22 Sicilian, Alapin |
| 24. T Likavsky vs R Ekstroem |
| ½-½ | 43 |
2001 |
EuTCh | A58 Benko Gambit |
| 25. Miles vs R Ekstroem |
| ½-½ | 56 |
2001 |
2nd IECC | A01 Nimzovich-Larsen Attack |