| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. S M Shyam vs P Ypma |
| 1-0 | 36 |
2009 |
Dutch Open | C45 Scotch Game |
| 2. P Ypma vs O Sadallah |
| 0-1 | 42 |
2009 |
13th Unive Tournament (Open) | B22 Sicilian, Alapin |
| 3. A Mellema vs P Ypma |
| 1-0 | 20 |
2009 |
13th Unive Tournament (Open) | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
| 4. P Ypma vs D Shreyansh |
| 1-0 | 52 |
2009 |
Dutch Open | B14 Caro-Kann, Panov-Botvinnik Attack |
| 5. C Mol vs P Ypma |
| ½-½ | 37 |
2009 |
13th Unive Tournament (Open) | D12 Queen's Gambit Declined Slav |
| 6. P Ypma vs R Potze |
| 1-0 | 43 |
2009 |
13th Unive Tournament (Open) | B33 Sicilian |
| 7. A Bezemer vs P Ypma |
| 1-0 | 38 |
2009 |
Dutch Open | D19 Queen's Gambit Declined Slav, Dutch |
| 8. P Ypma vs L Hortensius |
| ½-½ | 16 |
2009 |
13th Unive Tournament (Open) | D37 Queen's Gambit Declined |
| 9. M Admiraal vs P Ypma |
 | 1-0 | 73 |
2009 |
13th Unive Tournament (Open) | C69 Ruy Lopez, Exchange, Gligoric Variation, 6.d4 |
| 10. E Sparenberg vs P Ypma |
| 1-0 | 37 |
2009 |
13th Unive Tournament (Open) | C86 Ruy Lopez, Worrall Attack |
| 11. P Ypma vs Y Afek |
| 0-1 | 45 |
2009 |
13th Unive Tournament (Open) | C02 French, Advance |
| 12. P Ypma vs S Lagrotteria |
| 0-1 | 39 |
2009 |
13th Unive Tournament (Open) | C02 French, Advance |
| 13. C Van Oosterom vs P Ypma |
| ½-½ | 48 |
2010 |
Schaakfestival Open A | B22 Sicilian, Alapin |
| 14. P Ypma vs R Hess |
 | 0-1 | 38 |
2011 |
Groningen Chess Festival | C54 Giuoco Piano |
| 15. P Ypma vs R Rietveld |
| 1-0 | 39 |
2011 |
Groningen Chess Festival | B22 Sicilian, Alapin |
| 16. V Durarbayli vs P Ypma |
| 0-1 | 48 |
2011 |
Groningen Chess Festival | B06 Robatsch |
| 17. A Pijpers vs P Ypma |
| 1-0 | 53 |
2011 |
Groningen Chess Festival | B01 Scandinavian |
| 18. P Ypma vs D Brandenburg |
| 1-0 | 45 |
2011 |
Groningen Chess Festival | C01 French, Exchange |
| 19. P Ypma vs N Georgiadis |
| ½-½ | 40 |
2011 |
Groningen Chess Festival | E67 King's Indian, Fianchetto |
| 20. M De Jong vs P Ypma |
| ½-½ | 48 |
2011 |
Groningen Chess Festival | B12 Caro-Kann Defense |
| 21. P Michalik vs P Ypma |
| 1-0 | 57 |
2011 |
Groningen Chess Festival | A04 Reti Opening |
| 22. Roger Meng vs P Ypma |
| ½-½ | 61 |
2011 |
Groningen Chess Festival | C15 French, Winawer |
| 23. P Ypma vs Stijn Gieben |
| 1-0 | 57 |
2012 |
Groningen Open | D11 Queen's Gambit Declined Slav |
| 24. P Ypma vs E L'Ami |
| 0-1 | 58 |
2012 |
Remco Heite Open | B13 Caro-Kann, Exchange |
| 25. S Estremera Panos vs P Ypma |
| 1-0 | 39 |
2012 |
Groningen Open | B10 Caro-Kann |