| 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. J Trevelyan vs R Ekstroem |
| 0-1 | 60 |
1989 |
EU-chT (Men) | A56 Benoni Defense |
| 6. Sanna Gianlazzaro vs R Ekstroem |
| 1-0 | 34 |
1989 |
EU-chT (Men) | A58 Benko Gambit |
| 7. R Ekstroem vs F Txabarri |
| ½-½ | 33 |
1989 |
EU-chT (Men) | C78 Ruy Lopez |
| 8. R Ekstroem vs N Gavrilakis |
| 1-0 | 31 |
1989 |
EU-chT (Men) | B63 Sicilian, Richter-Rauzer Attack |
| 9. R Lev vs R Ekstroem |
| 1-0 | 72 |
1989 |
EU-chT (Men) | D31 Queen's Gambit Declined |
| 10. R Ekstroem vs B Badea |
| 0-1 | 34 |
1989 |
EU-chT (Men) | B93 Sicilian, Najdorf, 6.f4 |
| 11. R Ekstroem vs G Timoshchenko |
| ½-½ | 17 |
1995 |
Mitropa Cup | A48 King's Indian |
| 12. Bagirov vs R Ekstroem |
| 1-0 | 68 |
1995 |
09, Bern op | A13 English |
| 13. Sosonko vs R Ekstroem |
| ½-½ | 27 |
1995 |
Mitropa Cup NED-SUI | D18 Queen's Gambit Declined Slav, Dutch |
| 14. E Schiller vs R Ekstroem |
| 0-1 | 55 |
1995 |
It 'American open' | B12 Caro-Kann Defense |
| 15. R Ekstroem vs N Giertz |
| ½-½ | 41 |
1995 |
Ch Switzerland | C27 Vienna Game |
| 16. Razuvaev vs R Ekstroem |
| 1-0 | 38 |
1995 |
Geneve op | D19 Queen's Gambit Declined Slav, Dutch |
| 17. R Ekstroem vs C Renner |
| 0-1 | 42 |
1996 |
Tournament team | C33 King's Gambit Accepted |
| 18. V Tukmakov vs R Ekstroem |
| 1-0 | 32 |
1999 |
Weihnachts op-A 23th | E06 Catalan, Closed, 5.Nf3 |
| 19. M Balg vs R Ekstroem |
| 0-1 | 32 |
1999 |
Hilton Open | D37 Queen's Gambit Declined |
| 20. R Ekstroem vs L Krizsany |
| 1-0 | 29 |
1999 |
Hilton Open | B14 Caro-Kann, Panov-Botvinnik Attack |
| 21. R Ekstroem vs I Ibragimov |
| ½-½ | 63 |
2000 |
4th OIBM in Bad Wiessee | B07 Pirc |
| 22. Plachetka vs R Ekstroem |
| ½-½ | 16 |
2000 |
Mitropa Cup | D41 Queen's Gambit Declined, Semi-Tarrasch |
| 23. S Agdestein vs R Ekstroem |
| 0-1 | 39 |
2000 |
4th OIBM in Bad Wiessee | D25 Queen's Gambit Accepted |
| 24. R Ekstroem vs Epishin |
| ½-½ | 28 |
2000 |
4th OIBM in Bad Wiessee | B14 Caro-Kann, Panov-Botvinnik Attack |
| 25. V Mikhalevski vs R Ekstroem |
| 0-1 | 30 |
2000 |
4th OIBM in Bad Wiessee | A57 Benko Gambit |