| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. H Bastian vs H W Ackermann |
| ½-½ | 41 | 1974 | FRG-ch 13th | B25 Sicilian, Closed |
| 2. H Wirthensohn vs H W Ackermann |
| 1-0 | 32 | 1975 | Junior International Tournament | A04 Reti Opening |
| 3. T Rosenlund vs H W Ackermann |
| 1-0 | 39 | 1975 | Junior International Tournament | A04 Reti Opening |
| 4. L Nikolaiczuk vs H W Ackermann |
| ½-½ | 38 | 1975 | Junior International Tournament | B28 Sicilian, O'Kelly Variation |
| 5. C Niklasson vs H W Ackermann |
| 1-0 | 33 | 1975 | Junior International Tournament | A77 Benoni, Classical, 9...Re8, 10.Nd2 |
| 6. D Buchenthal vs H W Ackermann |
| ½-½ | 30 | 1975 | Junior International Tournament | C97 Ruy Lopez, Closed, Chigorin |
| 7. C Baljon vs H W Ackermann |
| 1-0 | 42 | 1975 | Junior International Tournament | B00 Uncommon King's Pawn Opening |
| 8. H W Ackermann vs H Wunderlich |
| ½-½ | 41 | 1975 | Junior International Tournament | C03 French, Tarrasch |
| 9. H W Ackermann vs K Kaiszauri |
| ½-½ | 47 | 1975 | Junior International Tournament | B00 Uncommon King's Pawn Opening |
| 10. H W Ackermann vs P Canibol |
| ½-½ | 47 | 1975 | Junior International Tournament | B13 Caro-Kann, Exchange |
| 11. H W Ackermann vs W Andre |
| ½-½ | 40 | 1975 | Junior International Tournament | B40 Sicilian |
| 12. H W Ackermann vs U Waagener |
| 0-1 | 39 | 1975 | Junior International Tournament | B02 Alekhine's Defense |
| 13. A Sydor vs H W Ackermann |
| 0-1 | 45 | 1976 | Dortmund | B28 Sicilian, O'Kelly Variation |
| 14. H W Ackermann vs Miles |
| 0-1 | 30 | 1976 | Dortmund | A07 King's Indian Attack |
| 15. M Krause vs H W Ackermann |
| ½-½ | 42 | 1976 | Dortmund | A15 English |
| 16. H W Ackermann vs D Tomic |
| ½-½ | 32 | 1976 | Dortmund | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 17. R Faase vs H W Ackermann |
| 1-0 | 33 | 1976 | Dortmund | B28 Sicilian, O'Kelly Variation |
| 18. G Iskov vs H W Ackermann |
| ½-½ | 48 | 1976 | Dortmund | A22 English |
| 19. H W Ackermann vs Romanishin |
| 0-1 | 41 | 1976 | Dortmund | B31 Sicilian, Rossolimo Variation |
| 20. D Ciric vs H W Ackermann |
 | ½-½ | 73 | 1976 | Dortmund | B28 Sicilian, O'Kelly Variation |
| 21. H W Ackermann vs J Flesch |
| 0-1 | 39 | 1976 | Dortmund | B30 Sicilian |
| 22. R Balinas vs H W Ackermann |
| 1-0 | 41 | 1976 | Dortmund | B28 Sicilian, O'Kelly Variation |
| 23. H W Ackermann vs W Nicolai |
| 1-0 | 83 | 1976 | Dortmund | C26 Vienna |
| 24. H W Ackermann vs K Wockenfuss |
| 0-1 | 57 | 1976 | Dutch Open | B06 Robatsch |
| 25. F Helmond vs H W Ackermann |
| 1-0 | 64 | 1976 | Dutch Open | B28 Sicilian, O'Kelly Variation |
Kibitzing
