| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. M Mostertman vs J Humphrey |
| 1-0 | 34 | 2008 | 12th Essent Open | B43 Sicilian, Kan, 5.Nc3 |
| 2. Robson vs M Mostertman |
| 1-0 | 36 | 2008 | 12th Essent Open | B78 Sicilian, Dragon, Yugoslav Attack, 10.castle long |
| 3. S Strating vs M Mostertman |
 | 1-0 | 20 | 2008 | 12th Essent Open | A52 Budapest Gambit |
| 4. M Mostertman vs Prasanna Raghuram Rao |
| 0-1 | 48 | 2008 | 12th Essent Open | C56 Two Knights |
| 5. M Mostertman vs B Pel |
| 1-0 | 55 | 2008 | Groningen Open-A | B07 Pirc |
| 6. F Levin vs M Mostertman |
| 1-0 | 39 | 2008 | Groningen Open-A | A52 Budapest Gambit |
| 7. M Mostertman vs M de Jong |
| ½-½ | 36 | 2008 | Groningen Open-A | B42 Sicilian, Kan |
| 8. S van Eijk vs M Mostertman |
| 1-0 | 23 | 2008 | Groningen Open-A | B72 Sicilian, Dragon |
| 9. M Mostertman vs Van Kampen |
| ½-½ | 28 | 2008 | Groningen Open-A | B67 Sicilian, Richter-Rauzer Attack, 7...a6 Defense, 8...Bd7 |
| 10. D Klein vs M Mostertman |
| ½-½ | 58 | 2008 | Groningen Open-A | B76 Sicilian, Dragon, Yugoslav Attack |
| 11. M Mostertman vs L Cako |
| 1-0 | 18 | 2008 | Groningen Open-A | C55 Two Knights Defense |
| 12. M Tan vs M Mostertman |
| 1-0 | 29 | 2008 | Groningen Open-A | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 13. M Mostertman vs F van Assendelft |
| ½-½ | 11 | 2008 | Groningen Open-A | B85 Sicilian, Scheveningen, Classical |
| 14. M Mostertman vs A Wohl |
| 0-1 | 45 | 2009 | Dutch Open | B02 Alekhine's Defense |
| 15. M Mostertman vs M Overeem |
| 1-0 | 68 | 2009 | Dutch Open | B74 Sicilian, Dragon, Classical |
| 16. A Bezemer vs M Mostertman |
| 1-0 | 29 | 2009 | Dutch Open | E47 Nimzo-Indian, 4.e3 O-O 5.Bd3 |
| 17. M Mostertman vs R Duijker |
| 1-0 | 34 | 2009 | Dutch Open | A40 Queen's Pawn Game |
| 18. S Kuipers vs M Mostertman |
| 1-0 | 49 | 2009 | Dutch Open | B01 Scandinavian |
| 19. M Mostertman vs J Wempe |
| 0-1 | 44 | 2009 | Dutch Open | C05 French, Tarrasch |
| 20. L Ootes vs M Mostertman |
| 0-1 | 57 | 2009 | 13th Unive Tournament (Open) | A14 English |
| 21. M Mostertman vs P Genov |
| ½-½ | 20 | 2009 | 13th Unive Tournament (Open) | B12 Caro-Kann Defense |
| 22. M de Jong vs M Mostertman |
| 1-0 | 35 | 2009 | 13th Unive Tournament (Open) | B76 Sicilian, Dragon, Yugoslav Attack |
| 23. M Mostertman vs A Vinke |
| ½-½ | 13 | 2009 | 13th Unive Tournament (Open) | C15 French, Winawer |
| 24. L van Kooten vs M Mostertman |
| 1-0 | 22 | 2009 | 13th Unive Tournament (Open) | A52 Budapest Gambit |
| 25. M Mostertman vs R Vedder |
| 1-0 | 36 | 2009 | 13th Unive Tournament (Open) | B48 Sicilian, Taimanov Variation |
Kibitzing
