| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. L J Bernal Moro vs L Guidarelli |
| ½-½ | 18 | 2001 | Hyeres Open | A57 Benko Gambit |
| 27. L Guidarelli vs S Giannakoulopoulos |
| ½-½ | 56 | 2001 | European Junior Championship | C10 French |
| 28. E Postny vs L Guidarelli |
| 1-0 | 92 | 2001 | European Junior Championship | D15 Queen's Gambit Declined Slav |
| 29. L Guidarelli vs Z Zvan |
| ½-½ | 49 | 2001 | European Junior Championship | A45 Queen's Pawn Game |
| 30. P Gengler vs L Guidarelli |
| 1-0 | 28 | 2001 | European Junior Championship | A59 Benko Gambit |
| 31. L Guidarelli vs D Poliakov |
| 0-1 | 47 | 2001 | European Junior Championship | B30 Sicilian |
| 32. N Hahabis vs L Guidarelli |
| ½-½ | 5 | 2001 | European Junior Championship | B21 Sicilian, 2.f4 and 2.d4 |
| 33. L Guidarelli vs E Zournatsidis |
| 0-1 | 29 | 2001 | European Junior Championship | B01 Scandinavian |
| 34. P Polyviou vs L Guidarelli |
| 0-1 | 30 | 2001 | European Junior Championship | B90 Sicilian, Najdorf |
| 35. L Guidarelli vs T Verkasalo |
| 0-1 | 31 | 2001 | European Junior Championship | B23 Sicilian, Closed |
| 36. L Guidarelli vs G Kafka |
| ½-½ | 8 | 2001 | European Junior Championship | A30 English, Symmetrical |
| 37. K Divaris vs L Guidarelli |
| ½-½ | 8 | 2001 | European Junior Championship | D10 Queen's Gambit Declined Slav |
| 38. L Guidarelli vs Potkin |
| ½-½ | 61 | 2001 | World Junior Championship | C16 French, Winawer |
| 39. Aronian vs L Guidarelli |
| ½-½ | 42 | 2001 | World Junior Championship | A45 Queen's Pawn Game |
| 40. L Guidarelli vs N Pert |
| ½-½ | 14 | 2001 | World Junior Championship | C18 French, Winawer |
| 41. D Bunzmann vs L Guidarelli |
| ½-½ | 14 | 2001 | World Junior Championship | A04 Reti Opening |
| 42. L Vajda vs L Guidarelli |
| ½-½ | 76 | 2001 | World Junior Championship | B50 Sicilian |
| 43. L Guidarelli vs T Bakre |
| 0-1 | 52 | 2001 | World Junior Championship | B23 Sicilian, Closed |
| 44. L Guidarelli vs J Berkvens |
| 1-0 | 33 | 2001 | World Junior Championship | B56 Sicilian |
| 45. J Markos vs L Guidarelli |
| 1-0 | 37 | 2001 | World Junior Championship | A46 Queen's Pawn Game |
| 46. L Guidarelli vs N Sedlak |
| 0-1 | 25 | 2001 | World Junior Championship | B96 Sicilian, Najdorf |
| 47. S Kuemin vs L Guidarelli |
| 1-0 | 33 | 2001 | Mitropa Cup | A58 Benko Gambit |
| 48. L Guidarelli vs P Vavrak |
| 1-0 | 51 | 2001 | Mitropa Cup | C16 French, Winawer |
| 49. Plachetka vs L Guidarelli |
| ½-½ | 28 | 2001 | Mitropa Cup | A07 King's Indian Attack |
| 50. L Guidarelli vs T Sakelsek |
| 0-1 | 32 | 2001 | Mitropa Cup | B23 Sicilian, Closed |
Kibitzing
