| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. Forintos vs A Gudmundsson |
| ½-½ | 54 | 1958 | Munich Olympiad Final-B | E69 King's Indian, Fianchetto, Classical Main line |
| 27. H Koskinen vs A Gudmundsson |
| ½-½ | 19 | 1958 | Munich Olympiad Final-B | B30 Sicilian |
| 28. A Gudmundsson vs Fischer |
  | 0-1 | 27 | 1960 | Reykjavik | D95 Grunfeld |
| 29. A Gudmundsson vs A Angos |
| ½-½ | 35 | 1960 | Leipzig Olympiad qual-3 | D59 Queen's Gambit Declined, Tartakower |
| 30. S Momo vs A Gudmundsson |
| ½-½ | 62 | 1960 | Leipzig Olympiad qual-3 | B97 Sicilian, Najdorf |
| 31. Szabo vs A Gudmundsson |
| ½-½ | 49 | 1960 | Leipzig Olympiad qual-3 | E12 Queen's Indian |
| 32. P H Clarke vs A Gudmundsson |
| ½-½ | 14 | 1960 | Leipzig Olympiad qual-3 | E17 Queen's Indian |
| 33. A Gudmundsson vs J Fichtl |
| ½-½ | 32 | 1960 | Leipzig Olympiad qual-3 | D02 Queen's Pawn Game |
| 34. A Gudmundsson vs S Holm |
| 1-0 | 42 | 1960 | Leipzig Olympiad qual-3 | A99 Dutch, Ilyin-Genevsky Variation with b3 |
| 35. K Lagha vs A Gudmundsson |
| 0-1 | 46 | 1960 | Leipzig Olympiad qual-3 | E90 King's Indian |
| 36. M Aaron vs A Gudmundsson |
| 0-1 | 52 | 1960 | Leipzig Olympiad Final-B | E80 King's Indian, Samisch Variation |
| 37. Robatsch vs A Gudmundsson |
| ½-½ | 44 | 1960 | Leipzig Olympiad Final-B | B70 Sicilian, Dragon Variation |
| 38. A Gudmundsson vs E Larrain Cadiz |
| 1-0 | 30 | 1960 | Leipzig Olympiad Final-B | A55 Old Indian, Main line |
| 39. E Cobo Arteaga vs A Gudmundsson |
| ½-½ | 21 | 1960 | Leipzig Olympiad Final-B | B77 Sicilian, Dragon, Yugoslav Attack |
| 40. A Gudmundsson vs M Rantanen |
| 1-0 | 51 | 1960 | Leipzig Olympiad Final-B | A46 Queen's Pawn Game |
| 41. A Gudmundsson vs K Plater |
| ½-½ | 14 | 1960 | Leipzig Olympiad Final-B | D02 Queen's Pawn Game |
| 42. A Nielsen vs A Gudmundsson |
| 0-1 | 46 | 1960 | Leipzig Olympiad Final-B | A15 English |
| 43. A Gudmundsson vs Z Nilsson |
| 1-0 | 29 | 1960 | Leipzig Olympiad Final-B | A43 Old Benoni |
| 44. D de Lange vs A Gudmundsson |
| ½-½ | 11 | 1960 | Leipzig Olympiad Final-B | E72 King's Indian |
| 45. A Gudmundsson vs Pachman |
| ½-½ | 41 | 1962 | Varna Olympiad qual-3 | E62 King's Indian, Fianchetto |
| 46. A Gudmundsson vs A Matanovic |
| ½-½ | 28 | 1962 | Varna Olympiad qual-3 | A46 Queen's Pawn Game |
| 47. A Gudmundsson vs V Bergraser |
| 1-0 | 56 | 1962 | Varna Olympiad qual-3 | D02 Queen's Pawn Game |
| 48. A Lantsias vs A Gudmundsson |
| 0-1 | 39 | 1962 | Varna Olympiad qual-3 | B59 Sicilian, Boleslavsky Variation, 7.Nb3 |
| 49. H Bouwmeester vs A Gudmundsson |
| ½-½ | 30 | 1962 | Varna Olympiad qual-3 | A05 Reti Opening |
| 50. A Gudmundsson vs G Philippe |
| ½-½ | 25 | 1962 | Varna Olympiad qual-3 | D44 Queen's Gambit Declined Semi-Slav |
Kibitzing
