Game |
| Result | Moves |
Year | Event/Locale | Opening |
1. P H Donoso Velasco vs M S Grunberg |
| ½-½ | 63 | 1961 | CHI-ch | C61 Ruy Lopez, Bird's Defense |
2. P H Donoso Velasco vs Najdorf |
| 0-1 | 57 | 1971 | 1st Pan American Team Championship | B90 Sicilian, Najdorf |
3. J C Ingolotti vs P H Donoso Velasco |
| 0-1 | 52 | 1971 | 1st Pan American Team Championship | C54 Giuoco Piano |
4. P H Donoso Velasco vs V Chemin |
| ½-½ | 43 | 1971 | 1st Pan American Team Championship | B64 Sicilian, Richter-Rauzer Attack |
5. P H Donoso Velasco vs E Jimenez Zerquera |
| ½-½ | 32 | 1971 | 1st Pan American Team Championship | B42 Sicilian, Kan |
6. P Lamas Baliero vs P H Donoso Velasco |
| 0-1 | 60 | 1971 | 1st Pan American Team Championship | D04 Queen's Pawn Game |
7. P H Donoso Velasco vs J Carvajal |
| 1-0 | 42 | 1971 | 1st Pan American Team Championship | B92 Sicilian, Najdorf, Opocensky Variation |
8. F Idrovo vs P H Donoso Velasco |
| 0-1 | 51 | 1971 | 1st Pan American Team Championship | C47 Four Knights |
9. P H Donoso Velasco vs Savon |
| 0-1 | 37 | 1972 | La Serena | B84 Sicilian, Scheveningen |
10. P H Donoso Velasco vs C Silva Sanchez |
| 0-1 | 23 | 1972 | La Serena | B42 Sicilian, Kan |
11. P H Donoso Velasco vs A Scherman |
| 1-0 | 29 | 1974 | Pan American Championship | C64 Ruy Lopez, Classical |
12. P Biyiasas vs P H Donoso Velasco |
| 1-0 | 73 | 1974 | Pan American Championship | C79 Ruy Lopez, Steinitz Defense Deferred |
13. P H Donoso Velasco vs A S Segal |
| 0-1 | 49 | 1974 | Pan American Championship | B04 Alekhine's Defense, Modern |
14. I Lipnowski vs P H Donoso Velasco |
| 0-1 | 34 | 1974 | Pan American Championship | E54 Nimzo-Indian, 4.e3, Gligoric System |
15. P H Donoso Velasco vs R Sanguineti |
| 0-1 | 56 | 1974 | Pan American Championship | C67 Ruy Lopez |
16. T R Lozano vs P H Donoso Velasco |
| 0-1 | 48 | 1974 | Pan American Championship | A45 Queen's Pawn Game |
17. C Juliao vs P H Donoso Velasco |
| ½-½ | 39 | 1974 | Pan American Championship | C44 King's Pawn Game |
18. O H Castro Rojas vs P H Donoso Velasco |
| 1-0 | 35 | 1974 | Pan American Championship | C54 Giuoco Piano |
19. P H Donoso Velasco vs H Ochoa |
| 1-0 | 54 | 1974 | Pan American Championship | B09 Pirc, Austrian Attack |
20. Browne vs P H Donoso Velasco |
| 1-0 | 24 | 1974 | Pan American Championship | C67 Ruy Lopez |
21. P H Donoso Velasco vs G Garcia |
| 1-0 | 33 | 1974 | Pan American Championship | B72 Sicilian, Dragon |
22. P H Donoso Velasco vs C C Thompson |
| 1-0 | 36 | 1974 | Pan American Championship | B09 Pirc, Austrian Attack |
23. P H Donoso Velasco vs P Nurmi |
| 0-1 | 68 | 1974 | Pan American Championship | B59 Sicilian, Boleslavsky Variation, 7.Nb3 |
24. E Jimenez Zerquera vs P H Donoso Velasco |
| ½-½ | 18 | 1974 | Pan American Championship | A04 Reti Opening |
25. K Frey Beckman vs P H Donoso Velasco |
| ½-½ | 28 | 1974 | Pan American Championship | E06 Catalan, Closed, 5.Nf3 |