| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. M Cuellar Gacharna vs Ed Lasker |
| 0-1 | 52 |
1947 |
US Open | C77 Ruy Lopez |
| 2. H Rossetto vs M Cuellar Gacharna |
 | 0-1 | 28 |
1952 |
Mar del Plata | C30 King's Gambit Declined |
| 3. E Eliskases vs M Cuellar Gacharna |
| 1-0 | 42 |
1953 |
Mar del Plata | D04 Queen's Pawn Game |
| 4. M Cuellar Gacharna vs P Trifunovic |
 | 1-0 | 36 |
1953 |
Mar del Plata | A43 Old Benoni |
| 5. Najdorf vs M Cuellar Gacharna |
| ½-½ | 38 |
1953 |
Mar del Plata | D37 Queen's Gambit Declined |
| 6. M Cuellar Gacharna vs Gligoric |
| 0-1 | 43 |
1953 |
Mar del Plata | E64 King's Indian, Fianchetto, Yugoslav System |
| 7. K S Ojanen vs M Cuellar Gacharna |
| 1-0 | 66 |
1953 |
Mar del Plata | A07 King's Indian Attack |
| 8. B Wexler vs M Cuellar Gacharna |
| 0-1 | 38 |
1953 |
Mar del Plata | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 9. M Cuellar Gacharna vs Julio Bolbochan |
| ½-½ | 50 |
1953 |
Mar del Plata (Argentina) | D76 Neo-Grunfeld, 6.cd Nxd5, 7.O-O Nb6 |
| 10. M Cuellar Gacharna vs Pilnik |
 | 1-0 | 41 |
1953 |
Mar del Plata | D75 Neo-Grunfeld, 6.cd Nxd5, 7.O-O c5, 8.dxc5 |
| 11. M Cuellar Gacharna vs D Parliaros |
| 1-0 | 24 |
1954 |
Amsterdam ol (Men) | C04 French, Tarrasch, Guimard Main line |
| 12. M Cuellar Gacharna vs O'Kelly |
 | 1-0 | 44 |
1954 |
Amsterdam ol (Men) | E41 Nimzo-Indian |
| 13. Larsen vs M Cuellar Gacharna |
 | 1-0 | 83 |
1954 |
Amsterdam ol (Men) fin-B | A07 King's Indian Attack |
| 14. M Cuellar Gacharna vs C H Alexander |
| 1-0 | 45 |
1954 |
Amsterdam | A89 Dutch, Leningrad, Main Variation with Nc6 |
| 15. M Cuellar Gacharna vs J Vesterinen |
| 1-0 | 43 |
1954 |
Amsterdam ol (Men) | E59 Nimzo-Indian, 4.e3, Main line |
| 16. M Cuellar Gacharna vs Yanofsky |
| ½-½ | 26 |
1954 |
Amsterdam ol (Men) | E62 King's Indian, Fianchetto |
| 17. Unzicker vs M Cuellar Gacharna |
| 1-0 | 44 |
1954 |
Amsterdam ol (Men) | C98 Ruy Lopez, Closed, Chigorin |
| 18. M Cuellar Gacharna vs E Paoli |
| ½-½ | 52 |
1954 |
Amsterdam ol (Men) fin-B | D85 Grunfeld |
| 19. O'Kelly vs M Cuellar Gacharna |
 | 1-0 | 36 |
1954 |
Amsterdam ol (Men) | A42 Modern Defense, Averbakh System |
| 20. M Cuellar Gacharna vs A Neu |
| 1-0 | 30 |
1954 |
Amsterdam ol (Men) | D43 Queen's Gambit Declined Semi-Slav |
| 21. Morcken vs M Cuellar Gacharna |
| 0-1 | 52 |
1954 |
Amsterdam ol (Men) | E60 King's Indian Defense |
| 22. O Benkner vs M Cuellar Gacharna |
| 0-1 | 48 |
1954 |
Amsterdam ol (Men) | A54 Old Indian, Ukrainian Variation, 4.Nf3 |
| 23. A Neu vs M Cuellar Gacharna |
| 0-1 | 21 |
1954 |
Amsterdam ol (Men) | E60 King's Indian Defense |
| 24. M Cuellar Gacharna vs Blau |
 | 0-1 | 36 |
1954 |
Amsterdam ol (Men) | E41 Nimzo-Indian |
| 25. M Cuellar Gacharna vs O Bernstein |
| ½-½ | 93 |
1954 |
Amsterdam ol (Men) | E07 Catalan, Closed |