| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. H Rittner vs H Hunte |
| 0-1 | 46 | 1952 | DDR-ch03 Final | C96 Ruy Lopez, Closed |
| 2. H Rittner vs E Kuebart |
| 0-1 | 27 | 1953 | East German Championship | B25 Sicilian, Closed |
| 3. O Pallwitz vs H Rittner |
| 0-1 | 32 | 1953 | East German Championship | A00 Uncommon Opening |
| 4. H Rittner vs K Quecke |
| ½-½ | 48 | 1953 | East German Championship | B32 Sicilian |
| 5. R Schlieder vs H Rittner |
| ½-½ | 66 | 1953 | East German Championship | E21 Nimzo-Indian, Three Knights |
| 6. H Rittner vs G Bessner |
| 0-1 | 29 | 1953 | East German Championship | A07 King's Indian Attack |
| 7. H Rittner vs E Winkler |
| 1-0 | 52 | 1953 | East German Championship | B09 Pirc, Austrian Attack |
| 8. H Rittner vs E Budrich |
| 0-1 | 39 | 1953 | East German Championship | C55 Two Knights Defense |
| 9. H Rittner vs R Elstner |
| 1-0 | 53 | 1953 | East German Championship | B06 Robatsch |
| 10. R Pakulla vs H Rittner |
| 0-1 | 41 | 1953 | East German Championship | C19 French, Winawer, Advance |
| 11. H Rittner vs E Keller-Herrmann |
| 0-1 | 52 | 1953 | East German Championship | B84 Sicilian, Scheveningen |
| 12. K Knothe vs H Rittner |
| ½-½ | 39 | 1953 | East German Championship | E33 Nimzo-Indian, Classical |
| 13. H Rittner vs S Muehlberg |
| 0-1 | 45 | 1956 | East German Championship | B56 Sicilian |
| 14. D Bertholdt vs H Rittner |
| 1-0 | 34 | 1956 | East German Championship | E48 Nimzo-Indian, 4.e3 O-O 5.Bd3 d5 |
| 15. S Dittmann vs H Rittner |
| ½-½ | 19 | 1956 | East German Championship | E40 Nimzo-Indian, 4.e3 |
| 16. R Fuchs vs H Rittner |
| 1-0 | 39 | 1956 | East German Championship | B07 Pirc |
| 17. W Golz vs H Rittner |
| ½-½ | 40 | 1956 | East German Championship | E48 Nimzo-Indian, 4.e3 O-O 5.Bd3 d5 |
| 18. H Juettler vs H Rittner |
| ½-½ | 32 | 1956 | East German Championship | E14 Queen's Indian |
| 19. A Zirngibl vs H Rittner |
| ½-½ | 63 | 1956 | East German Championship | A30 English, Symmetrical |
| 20. W Breustedt vs H Rittner |
| 1-0 | 32 | 1956 | East German Championship | A45 Queen's Pawn Game |
| 21. H Rittner vs E Bauer |
| ½-½ | 75 | 1956 | East German Championship | A07 King's Indian Attack |
| 22. H Handel vs H Rittner |
| ½-½ | 41 | 1956 | East German Championship | B03 Alekhine's Defense |
| 23. H Rittner vs K Knothe |
| ½-½ | 27 | 1956 | East German Championship | B76 Sicilian, Dragon, Yugoslav Attack |
| 24. H Rittner vs H Liebert |
| ½-½ | 16 | 1956 | East German Championship | A04 Reti Opening |
| 25. H Rittner vs B Malich |
| ½-½ | 35 | 1956 | East German Championship | B56 Sicilian |
Kibitzing
