| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. A E Seidler vs J Szmetan |
| 1-0 | 55 | 1976 | ARG-ch | C17 French, Winawer, Advance |
| 27. R Garcia vs A E Seidler |
| 1-0 | 67 | 1977 | Club Argentino | A07 King's Indian Attack |
| 28. A E Seidler vs C Amado |
| 1-0 | 33 | 1977 | Club Argentino | C77 Ruy Lopez |
| 29. A E Seidler vs F Benko |
| ½-½ | 40 | 1977 | Club Argentino | C48 Four Knights |
| 30. O Cuasnicu vs A E Seidler |
| 1-0 | 43 | 1977 | Club Argentino | B90 Sicilian, Najdorf |
| 31. A E Seidler vs S Schweber |
| 0-1 | 16 | 1977 | Club Argentino | C15 French, Winawer |
| 32. H Rossetto vs A E Seidler |
| ½-½ | 52 | 1977 | Club Argentino | A07 King's Indian Attack |
| 33. A E Seidler vs J Rubinetti |
| ½-½ | 63 | 1977 | Club Argentino | C41 Philidor Defense |
| 34. R Sanguineti vs A E Seidler |
| 1-0 | 45 | 1977 | Club Argentino | A15 English |
| 35. A E Seidler vs Panno |
| 0-1 | 44 | 1977 | Club Argentino | A07 King's Indian Attack |
| 36. Najdorf vs A E Seidler |
 | 1-0 | 38 | 1977 | Club Argentino | A71 Benoni, Classical, 8.Bg5 |
| 37. A E Seidler vs L Bronstein |
| 0-1 | 65 | 1978 | ARG-ch | B08 Pirc, Classical |
| 38. J Szmetan vs A E Seidler |
| ½-½ | 41 | 1978 | ARG-ch | C77 Ruy Lopez |
| 39. Samir Shoumali vs A E Seidler |
| 0-1 | 23 | 1978 | Buenos Aires Olympiad | B33 Sicilian |
| 40. A E Seidler vs Gulko |
| 0-1 | 63 | 1978 | Buenos Aires Olympiad | C01 French, Exchange |
| 41. Y Rantanen vs A E Seidler |
| 1-0 | 42 | 1978 | Buenos Aires Olympiad | B33 Sicilian |
| 42. Z Franco Ocampos vs A E Seidler |
| 1-0 | 52 | 1978 | Buenos Aires Olympiad | C00 French Defense |
| 43. A E Seidler vs I Hakki |
| 1-0 | 35 | 1978 | Buenos Aires Olympiad | B21 Sicilian, 2.f4 and 2.d4 |
| 44. A E Seidler vs T Wibe |
| 1-0 | 62 | 1978 | Buenos Aires Olympiad | C44 King's Pawn Game |
| 45. A E Seidler vs P W Stuart |
| 1-0 | 37 | 1978 | Buenos Aires Olympiad | B22 Sicilian, Alapin |
| 46. A E Seidler vs R Rodriguez |
| 1-0 | 78 | 1978 | Buenos Aires Olympiad | A07 King's Indian Attack |
| 47. V Ciocaltea vs A E Seidler |
| ½-½ | 23 | 1978 | Buenos Aires Olympiad | B30 Sicilian |
| 48. A E Seidler vs Sosonko |
| ½-½ | 65 | 1978 | Buenos Aires Olympiad | B22 Sicilian, Alapin |
| 49. I Morovic Fernandez vs A E Seidler |
| ½-½ | 41 | 1978 | Buenos Aires Olympiad | C41 Philidor Defense |
| 50. A E Seidler vs E Preissmann |
| 1-0 | 61 | 1978 | Buenos Aires Olympiad | B22 Sicilian, Alapin |
Kibitzing
