| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. J Krupenski vs K Jakubowski |
| 0-1 | 43 | 2002 | European Junior Championship | E39 Nimzo-Indian, Classical, Pirc Variation |
| 27. S Buckley vs J Krupenski |
| 1-0 | 48 | 2002 | European Junior Championship | A45 Queen's Pawn Game |
| 28. J Krupenski vs B Esen |
| 1-0 | 72 | 2002 | European Junior Championship | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 29. Stellwagen vs J Krupenski |
| 1-0 | 27 | 2002 | European Junior Championship | B46 Sicilian, Taimanov Variation |
| 30. J Krupenski vs F Tahirov |
| 1-0 | 24 | 2002 | European Junior Championship | D31 Queen's Gambit Declined |
| 31. J Krupenski vs V Teterev |
| 0-1 | 33 | 2002 | European Junior Championship | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 32. G Baladjaev vs J Krupenski |
| ½-½ | 51 | 2002 | European Junior Championship | A88 Dutch, Leningrad, Main Variation with c6 |
| 33. D Aliev vs J Krupenski |
| 0-1 | 24 | 2002 | European Junior Championship | B44 Sicilian |
| 34. J Krupenski vs C Aliev |
| ½-½ | 41 | 2002 | European Junior Championship | B28 Sicilian, O'Kelly Variation |
| 35. K Kulaots vs J Krupenski |
| 1-0 | 28 | 2002 | EST-ch | B83 Sicilian |
| 36. J Krupenski vs E Kengis |
| 0-1 | 37 | 2002 | EST-ch | A40 Queen's Pawn Game |
| 37. D Kovaljov vs J Krupenski |
| 1-0 | 34 | 2003 | EST-chT | A88 Dutch, Leningrad, Main Variation with c6 |
| 38. K Kulaots vs J Krupenski |
| 1-0 | 16 | 2003 | EST-chT final | B80 Sicilian, Scheveningen |
| 39. J Krupenski vs M Rychagov |
| 0-1 | 29 | 2003 | EST-chT final | D18 Queen's Gambit Declined Slav, Dutch |
| 40. A Volodin vs J Krupenski |
| ½-½ | 67 | 2012 | 21st Keres Memorial | E12 Queen's Indian |
| 41. J Krupenski vs L Johansson |
| 0-1 | 44 | 2013 | TCh-SWE Elitserien -14 | E12 Queen's Indian |
| 42. D Bit-Narva vs J Krupenski |
| 0-1 | 33 | 2013 | Rilton Cup 2013/14 | B50 Sicilian |
| 43. J Krupenski vs T Hansen |
| 1-0 | 33 | 2013 | Rilton Cup 2013/14 | E71 King's Indian, Makagonov System (5.h3) |
| 44. S Volkov vs J Krupenski |
| 1-0 | 54 | 2013 | Rilton Cup 2013/14 | E20 Nimzo-Indian |
| 45. J Krupenski vs R Akesson |
| 1-0 | 26 | 2013 | Rilton Cup 2013/14 | E12 Queen's Indian |
| 46. F Urkedal vs J Krupenski |
| 1-0 | 53 | 2014 | Rilton Cup 2013/14 | E39 Nimzo-Indian, Classical, Pirc Variation |
| 47. J Krupenski vs H Tikkanen |
| 0-1 | 37 | 2014 | Rilton Cup 2013-14 | D11 Queen's Gambit Declined Slav |
| 48. J Krupenski vs H Tikkanen |
 | 0-1 | 37 | 2014 | Rilton Cup 2013/14 | D11 Queen's Gambit Declined Slav |
| 49. P Soderberg vs J Krupenski |
| 1-0 | 52 | 2014 | Rilton Cup 2013/14 | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 50. K Trygstad vs J Krupenski |
| 0-1 | 40 | 2014 | Rilton Cup 2013/14 | B23 Sicilian, Closed |
Kibitzing
