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| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. A Rodriguez Vila vs S Mareco |
| 1-0 | 21 | 2010 | 9th Mario Covas Jr | B23 Sicilian, Closed |
| 2. A Rodriguez Vila vs S Mareco |
| 0-1 | 36 | 2010 | II Duchamp GM | B23 Sicilian, Closed |
| 3. J F Cubas vs S Mareco |
| 0-1 | 34 | 2012 | Magistral Osasco 50 Anos | B23 Sicilian, Closed |
| 4. R Felgaer vs S Mareco |
| 1-0 | 60 | 2012 | Buenos Aires Masters | B23 Sicilian, Closed |
| 5. J van Foreest vs S Mareco |
 | 0-1 | 37 | 2016 | Hasselbacken Open | B23 Sicilian, Closed |
| 6. V Neverov vs S Mareco |
| 0-1 | 37 | 2017 | 1st Sharjah Masters | B23 Sicilian, Closed |
| 7. T Sousa Santos Filho vs S Mareco |
| 0-1 | 54 | 2018 | American Continental | B23 Sicilian, Closed |
| 8. B S Escalante Ramirez vs S Mareco |
| 0-1 | 46 | 2018 | American Continental TB | B23 Sicilian, Closed |
| 9. D Kadric vs S Mareco |
| 1-0 | 37 | 2018 | Batumi Olympiad | B23 Sicilian, Closed |
| 10. N Mitkov vs S Mareco |
| 0-1 | 53 | 2020 | 2nd Caissa Guatemala Open | B23 Sicilian, Closed |
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Kibitzing
