| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. H Westerinen vs K Darga |
| 0-1 | 56 |
1964 |
Tel Aviv ol (Men) prel | B42 Sicilian, Kan |
| 27. S Brien vs H Westerinen |
 | 1-0 | 46 |
1964 |
WchT U26 11th fin-B | C20 King's Pawn Game |
| 28. A Hollis vs H Westerinen |
| 1-0 | 46 |
1964 |
WchT U26 11th fin-B | E60 King's Indian Defense |
| 29. H Westerinen vs A Hollis |
| 1-0 | 31 |
1964 |
WchT U26 11th qual-B | B78 Sicilian, Dragon, Yugoslav Attack, 10.castle long |
| 30. Spiridonov vs H Westerinen |
| 1-0 | 50 |
1966 |
Orebro Stud olm fA | A15 English |
| 31. H Westerinen vs B Brinck-Claussen |
| 1-0 | 41 |
1966 |
Orebro Stud olm fA | A56 Benoni Defense |
| 32. H Westerinen vs Tringov |
| 1-0 | 40 |
1966 |
La Habana ol (Men) prel | B78 Sicilian, Dragon, Yugoslav Attack, 10.castle long |
| 33. Hort vs H Westerinen |
| 1-0 | 27 |
1966 |
Orebro Stud olm fA | C85 Ruy Lopez, Exchange Variation Doubly Deferred (DERLD) |
| 34. H Westerinen vs Savon |
| ½-½ | 32 |
1966 |
Orebro Stud olm prelim1 | B42 Sicilian, Kan |
| 35. I Polgar vs H Westerinen |
| 1-0 | 47 |
1966 |
Orebro Stud olm fA | E75 King's Indian, Averbakh, Main line |
| 36. H Westerinen vs C Zuidema |
| ½-½ | 66 |
1966 |
Orebro Stud olm fA | C97 Ruy Lopez, Closed, Chigorin |
| 37. Krantz vs H Westerinen |
| ½-½ | 57 |
1966 |
Orebro Stud olm prelim1 | B32 Sicilian |
| 38. H Westerinen vs Kurajica |
| ½-½ | 20 |
1966 |
Orebro Stud olm fA | B42 Sicilian, Kan |
| 39. Book vs H Westerinen |
| 1-0 | 33 |
1966 |
Helsinki | A04 Reti Opening |
| 40. Gheorghiu vs H Westerinen |
| 1-0 | 36 |
1966 |
Orebro Stud olm fA | B32 Sicilian |
| 41. H Westerinen vs J Boey |
| ½-½ | 55 |
1966 |
Havana ol (Men) fin-B | C63 Ruy Lopez, Schliemann Defense |
| 42. P N Lee vs H Westerinen |
| 0-1 | 66 |
1966 |
Orebro Stud olm fA | B09 Pirc, Austrian Attack |
| 43. Hartston vs H Westerinen |
| 0-1 | 37 |
1966 |
Havana Olympiad | B79 Sicilian, Dragon, Yugoslav Attack, 12.h4 |
| 44. H Westerinen vs Savon |
| ½-½ | 74 |
1966 |
Orebro Stud olm fA | B42 Sicilian, Kan |
| 45. A Hennings vs H Westerinen |
| 0-1 | 31 |
1966 |
Orebro Stud olm fA | B32 Sicilian |
| 46. H Westerinen vs G Israel |
| ½-½ | 40 |
1966 |
Orebro Stud olm fA | E81 King's Indian, Samisch |
| 47. Schmid vs H Westerinen |
| 1-0 | 39 |
1967 |
Capablanca mem | E91 King's Indian |
| 48. H Westerinen vs Minev |
| 1-0 | 44 |
1967 |
Halle zt | C67 Ruy Lopez |
| 49. H Westerinen vs Ujtelky |
| 0-1 | 42 |
1967 |
Hoogovens-B | B06 Robatsch |
| 50. H Westerinen vs Suetin |
| ½-½ | 41 |
1967 |
Leningrad | B44 Sicilian |
