| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. A Ramoutar vs M Ruiz Buendia |
| 1-0 | 28 | 2023 | Reykjavik Open | B25 Sicilian, Closed |
| 27. R R Raja vs M Ruiz Buendia |
| ½-½ | 32 | 2023 | Teplice Open | D12 Queen's Gambit Declined Slav |
| 28. M Ruiz Buendia vs O Bronstein |
| 0-1 | 31 | 2023 | Teplice Open | C12 French, McCutcheon |
| 29. T Stoyanov vs M Ruiz Buendia |
| 1-0 | 37 | 2023 | El Llobregat Open | A11 English, Caro-Kann Defensive System |
| 30. M Fromm vs M Ruiz Buendia |
| 1-0 | 34 | 2023 | El Llobregat Open | A09 Reti Opening |
| 31. M Ruiz Buendia vs R Paikens |
| 1-0 | 32 | 2023 | El Llobregat Open | B31 Sicilian, Rossolimo Variation |
| 32. P Golubka vs M Ruiz Buendia |
| ½-½ | 53 | 2023 | El Llobregat Open | C45 Scotch Game |
| 33. E Trost vs M Ruiz Buendia |
| 0-1 | 48 | 2023 | El Llobregat Open | C65 Ruy Lopez, Berlin Defense |
| 34. M Ruiz Buendia vs O Kochavi |
| 0-1 | 34 | 2023 | El Llobregat Open | B12 Caro-Kann Defense |
| 35. N Iliaguev vs M Ruiz Buendia |
| ½-½ | 57 | 2023 | El Llobregat Open | A11 English, Caro-Kann Defensive System |
| 36. R R Raja vs M Ruiz Buendia |
| 1-0 | 59 | 2023 | Sunway Sitges Open | A15 English |
| 37. K Alekseenko vs M Ruiz Buendia |
| 1-0 | 38 | 2023 | Sunway Sitges Open | C65 Ruy Lopez, Berlin Defense |
| 38. J Morris vs M Ruiz Buendia |
| 1-0 | 56 | 2023 | Sunway Sitges Open | C46 Three Knights |
| 39. Y Fossheim vs M Ruiz Buendia |
| ½-½ | 36 | 2024 | Reykjavik Open | D11 Queen's Gambit Declined Slav |
| 40. M Ruiz Buendia vs A Manucharyan |
| 1-0 | 33 | 2024 | Reykjavik Open | C18 French, Winawer |
| 41. V Sanal vs M Ruiz Buendia |
| 1-0 | 78 | 2024 | Reykjavik Open | A06 Reti Opening |
| 42. M Ruiz Buendia vs J Beisteiner |
| 1-0 | 39 | 2024 | Reykjavik Open | C79 Ruy Lopez, Steinitz Defense Deferred |
| 43. D Makhnev vs M Ruiz Buendia |
| 1-0 | 32 | 2024 | Semana Santa Open | A07 King's Indian Attack |
| 44. M Ruiz Buendia vs F Oro |
| ½-½ | 32 | 2024 | Madrid Chess Festival Group-B | C88 Ruy Lopez |
| 45. A Garrido Outon vs M Ruiz Buendia |
| 1-0 | 37 | 2024 | Madrid Chess Festival Group-B | C48 Four Knights |
| 46. M Ruiz Buendia vs E Rosen |
| 0-1 | 31 | 2024 | Madrid Chess Festival Group-B | B30 Sicilian |
| 47. A Ostrovskiy vs M Ruiz Buendia |
| ½-½ | 33 | 2024 | Madrid Chess Festival Group-B | C53 Giuoco Piano |
| 48. M Ruiz Buendia vs J R Gascon del Nogal |
| 0-1 | 77 | 2024 | Madrid Chess Festival Group-B | B30 Sicilian |
| 49. M Ruiz Buendia vs S Vega Gutierrez |
| ½-½ | 30 | 2024 | Madrid Chess Festival Group-B | B45 Sicilian, Taimanov |
| 50. M Ruiz Buendia vs D Larino Nieto |
| 0-1 | 45 | 2024 | Madrid Chess Festival Group-B | B10 Caro-Kann |
Kibitzing
