| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. M Ruiz Buendia vs J Martin Duque |
| 0-1 | 23 | 2020 | Sunway Sitges Open | B48 Sicilian, Taimanov Variation |
| 2. S Garcia Gimenez vs M Ruiz Buendia |
| ½-½ | 42 | 2020 | Sunway Sitges Open | B58 Sicilian |
| 3. M Ruiz Buendia vs B Subramaniyam |
| 0-1 | 40 | 2021 | Sunway Sitges Open | B42 Sicilian, Kan |
| 4. M Ruiz Buendia vs M Ervan |
| 0-1 | 42 | 2021 | Sunway Sitges Open | B67 Sicilian, Richter-Rauzer Attack, 7...a6 Defense, 8...Bd7 |
| 5. Anees M Mohamed vs M Ruiz Buendia |
| 1-0 | 42 | 2021 | Sunway Sitges Open | B97 Sicilian, Najdorf |
| 6. M Ruiz Buendia vs T Sachdev |
| ½-½ | 48 | 2022 | Kvika Reykjavik Open | C50 Giuoco Piano |
| 7. E Hedman vs M Ruiz Buendia |
| ½-½ | 11 | 2022 | Kvika Reykjavik Open | A34 English, Symmetrical |
| 8. M Ruiz Buendia vs H Heimisson |
| ½-½ | 72 | 2022 | Kvika Reykjavik Open | B67 Sicilian, Richter-Rauzer Attack, 7...a6 Defense, 8...Bd7 |
| 9. B Hallmundarson vs M Ruiz Buendia |
| 0-1 | 75 | 2022 | Kvika Reykjavik Open | B50 Sicilian |
| 10. M Ruiz Buendia vs Z Lim |
| 0-1 | 29 | 2022 | Kvika Reykjavik Open | B96 Sicilian, Najdorf |
| 11. J Ostensson vs M Ruiz Buendia |
| 0-1 | 49 | 2022 | Kvika Reykjavik Open | B23 Sicilian, Closed |
| 12. M Ruiz Buendia vs D Kolbus |
| 0-1 | 42 | 2022 | Kvika Reykjavik Open | B12 Caro-Kann Defense |
| 13. A Hughes vs M Ruiz Buendia |
| 0-1 | 36 | 2022 | Kvika Reykjavik Open | A36 English |
| 14. M Ruiz Buendia vs D George Samir |
| 1-0 | 44 | 2022 | Kvika Reykjavik Open | C55 Two Knights Defense |
| 15. M Ruiz Buendia vs T Kaasen |
| ½-½ | 28 | 2022 | Chessable Sunway Sitges | B12 Caro-Kann Defense |
| 16. I Bulmaga vs M Ruiz Buendia |
| 1-0 | 47 | 2022 | Chessable Sunway Sitges | B96 Sicilian, Najdorf |
| 17. M Ruiz Buendia vs K G Hiren |
| 1-0 | 32 | 2022 | Chessable Sunway Sitges | B28 Sicilian, O'Kelly Variation |
| 18. S Sammed Jaykumar vs M Ruiz Buendia |
| 1-0 | 62 | 2022 | Chessable Sunway Sitges | B22 Sicilian, Alapin |
| 19. M Ruiz Buendia vs Javier Rodriguez Diaz |
| 0-1 | 31 | 2022 | Chessable Sunway Sitges | C53 Giuoco Piano |
| 20. V Galvan Cipriani vs M Ruiz Buendia |
| ½-½ | 39 | 2022 | Chessable Sunway Sitges | D85 Grunfeld |
| 21. M Ruiz Buendia vs D Salinas Tomas |
| 1-0 | 41 | 2022 | Chessable Sunway Sitges | B33 Sicilian |
| 22. M Ruiz Buendia vs Petursson |
| 0-1 | 33 | 2022 | 50th Rilton Cup | B90 Sicilian, Najdorf |
| 23. M Ruiz Buendia vs H S Gretarsson |
| 0-1 | 35 | 2023 | Reykjavik Open | B12 Caro-Kann Defense |
| 24. I K Sukandar vs M Ruiz Buendia |
| 1-0 | 40 | 2023 | Reykjavik Open | D00 Queen's Pawn Game |
| 25. M Ruiz Buendia vs E Miller |
| ½-½ | 17 | 2023 | Reykjavik Open | B12 Caro-Kann Defense |
Kibitzing
