| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. R Polzin vs J Heissler |
| ½-½ | 79 | 1999 | Bundesliga 1999/00 | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 27. J Heissler vs A Markgraf |
| 1-0 | 16 | 1999 | Bundesliga 1999/00 | B06 Robatsch |
| 28. J Gustafsson vs J Heissler |
| 1-0 | 71 | 1999 | Bundesliga 1999/00 | B07 Pirc |
| 29. J Heissler vs E Mortensen |
| 0-1 | 44 | 1999 | Bundesliga 1999/00 | A07 King's Indian Attack |
| 30. J Heissler vs Andersson |
| 0-1 | 52 | 1999 | Bundesliga 1999/00 | A07 King's Indian Attack |
| 31. R Kraut vs J Heissler |
| 0-1 | 50 | 1999 | Bundesliga 1999/00 | B53 Sicilian |
| 32. Kasimdzhanov vs J Heissler |
| 1-0 | 29 | 2000 | Bundesliga 1999/00 | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 33. A Lauber vs J Heissler |
| 1-0 | 53 | 2000 | Bundesliga 1999/00 | E97 King's Indian |
| 34. W N Watson vs J Heissler |
| 1-0 | 66 | 2000 | Bundesliga 1999/00 | A07 King's Indian Attack |
| 35. J Heissler vs T Jackelen |
| ½-½ | 47 | 2000 | Bundesliga 1999/00 | A10 English |
| 36. M Hackel vs J Heissler |
| 0-1 | 36 | 2000 | Bundesliga 1999/00 | E70 King's Indian |
| 37. J Heissler vs A Goldberg |
| ½-½ | 43 | 2000 | Bundesliga 1999/00 | C84 Ruy Lopez, Closed |
| 38. J Heissler vs H Ellers |
| 1-0 | 44 | 2000 | Bundesliga 1999/00 | C00 French Defense |
| 39. J Heissler vs E Pezerovic |
| 1-0 | 64 | 2000 | Bundesliga 1999/00 | A07 King's Indian Attack |
| 40. C Renner vs J Heissler |
| 0-1 | 37 | 2000 | Bundesliga 1999/00 | A07 King's Indian Attack |
| 41. E van den Doel vs J Heissler |
| 1-0 | 42 | 2001 | Bundesliga 2000/01 | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 42. J Heissler vs K Muranyi |
| ½-½ | 52 | 2001 | Bundesliga 2000/01 | B10 Caro-Kann |
| 43. A Balzar vs J Heissler |
| 0-1 | 58 | 2001 | Bundesliga 2000/01 | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 44. O Reeh vs J Heissler |
| 1-0 | 54 | 2001 | Bundesliga 2000/01 | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 45. J Heissler vs J Hector |
| ½-½ | 36 | 2001 | Bundesliga 2000/01 | A15 English |
| 46. D Sebastian vs J Heissler |
| ½-½ | 77 | 2001 | Bundesliga 2001/02 | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 47. J Heissler vs E Mortensen |
| ½-½ | 50 | 2001 | Bundesliga 2001/02 | B06 Robatsch |
| 48. E Kengis vs J Heissler |
| ½-½ | 51 | 2002 | Bundesliga 0203 | E67 King's Indian, Fianchetto |
| 49. Fressinet vs J Heissler |
| 1-0 | 34 | 2003 | European Club Cup | B48 Sicilian, Taimanov Variation |
| 50. J Heissler vs A Hammerstad |
| 1-0 | 45 | 2003 | European Club Cup | A07 King's Indian Attack |
Kibitzing
