| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Z Nilsson vs M Rantanen |
| ½-½ | 57 |
1948 |
Saltsjobaden tt | D52 Queen's Gambit Declined |
| 2. Ugo Cala vs M Rantanen |
| ½-½ | 60 |
1954 |
Amsterdam ol (Men) | A30 English, Symmetrical |
| 3. M Rantanen vs C Rivera |
| ½-½ | 34 |
1954 |
Amsterdam ol (Men) | E41 Nimzo-Indian |
| 4. M Rantanen vs K Darga |
| ½-½ | 34 |
1956 |
Moscow ol (Men) prel | E10 Queen's Pawn Game |
| 5. M Rantanen vs Prins |
| ½-½ | 41 |
1958 |
13th olm final B | E00 Queen's Pawn Game |
| 6. M Rantanen vs Schmid |
| ½-½ | 54 |
1958 |
Munich ol (Men) prel | B21 Sicilian, 2.f4 and 2.d4 |
| 7. H Van de Broeck vs M Rantanen |
| ½-½ | 19 |
1958 |
13th olm final B | D38 Queen's Gambit Declined, Ragozin Variation |
| 8. M Rantanen vs Bisguier |
| ½-½ | 61 |
1958 |
13th olm qual. group 2 | D27 Queen's Gambit Accepted, Classical |
| 9. M Rantanen vs Z Nilsson |
| ½-½ | 47 |
1958 |
13th olm final B | A88 Dutch, Leningrad, Main Variation with c6 |
| 10. M Rantanen vs G Barcza |
| ½-½ | 38 |
1958 |
13th olm final B | E50 Nimzo-Indian, 4.e3 O-O 5.Nf3, without ...d5 |
| 11. M Rantanen vs K Darga |
| ½-½ | 28 |
1960 |
EU-Cup Gr2 | E63 King's Indian, Fianchetto, Panno Variation |
| 12. K Darga vs M Rantanen |
| ½-½ | 32 |
1960 |
EU-Cup Gr2 | A17 English |
| 13. M Rantanen vs Hort |
| ½-½ | 38 |
1962 |
Varna | E61 King's Indian |
