| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. L Taylor vs J Jirka |
| 0-1 | 34 | 2000 | World Junior Championship | C56 Two Knights |
| 27. R Felgaer vs J Jirka |
| 1-0 | 36 | 2000 | World Junior Championship | C53 Giuoco Piano |
| 28. J Jirka vs M Ginzburg |
| ½-½ | 45 | 2000 | World Junior Championship | D02 Queen's Pawn Game |
| 29. O Wegener vs J Jirka |
| 0-1 | 24 | 2000 | World Junior Championship | C61 Ruy Lopez, Bird's Defense |
| 30. J Jirka vs D Ovcina |
| 0-1 | 38 | 2000 | World Junior Championship | E61 King's Indian |
| 31. J Jirka vs M Al Sayed |
| 1-0 | 54 | 2000 | World Junior Championship | E62 King's Indian, Fianchetto |
| 32. Lupulescu vs J Jirka |
 | 1-0 | 34 | 2001 | TCh-Europe Boys U18 | A07 King's Indian Attack |
| 33. H Rau vs J Jirka |
| 1-0 | 34 | 2001 | TCh-Europe Boys U18 | D15 Queen's Gambit Declined Slav |
| 34. J Jirka vs N Hartweg |
| 0-1 | 44 | 2001 | TCh-Europe Boys U18 | E08 Catalan, Closed |
| 35. A Korobov vs J Jirka |
| 1-0 | 53 | 2001 | TCh-Europe Boys U18 | D15 Queen's Gambit Declined Slav |
| 36. J Jirka vs E Berg |
| 0-1 | 40 | 2001 | European Junior Championship | E00 Queen's Pawn Game |
| 37. G Kafka vs J Jirka |
| ½-½ | 62 | 2001 | European Junior Championship | C61 Ruy Lopez, Bird's Defense |
| 38. J Jirka vs S Giannakoulopoulos |
| 1-0 | 29 | 2001 | European Junior Championship | E08 Catalan, Closed |
| 39. Z Zvan vs J Jirka |
| 0-1 | 32 | 2001 | European Junior Championship | C57 Two Knights |
| 40. J Jirka vs Lupulescu |
| 1-0 | 46 | 2001 | European Junior Championship | D72 Neo-Grunfeld, 5.cd, Main line |
| 41. E Postny vs J Jirka |
| ½-½ | 67 | 2001 | European Junior Championship | D10 Queen's Gambit Declined Slav |
| 42. J Jirka vs J Berkvens |
| 1-0 | 46 | 2001 | European Junior Championship | E62 King's Indian, Fianchetto |
| 43. M Stryjecki vs J Jirka |
| 1-0 | 69 | 2001 | European Junior Championship | D15 Queen's Gambit Declined Slav |
| 44. J Jirka vs A Timofeev |
| 0-1 | 42 | 2001 | European Junior Championship | D71 Neo-Grunfeld |
| 45. G Vallin vs J Jirka |
| 0-1 | 29 | 2001 | European Junior Championship | D10 Queen's Gambit Declined Slav |
| 46. J Jirka vs P Smirnov |
| ½-½ | 45 | 2001 | European Junior Championship | E67 King's Indian, Fianchetto |
| 47. V Dambrauskas vs J Jirka |
| 1-0 | 51 | 2001 | Valoz Cup | D13 Queen's Gambit Declined Slav, Exchange Variation |
| 48. F Lindgren vs J Jirka |
| 0-1 | 38 | 2001 | Valoz Cup | C61 Ruy Lopez, Bird's Defense |
| 49. J Jirka vs M Llaneza-Vega |
| 1-0 | 18 | 2001 | Valoz Cup | E62 King's Indian, Fianchetto |
| 50. J Jirka vs N V Pedersen |
| 1-0 | 35 | 2001 | Valoz Cup | E01 Catalan, Closed |
Kibitzing
