Game |
| Result | Moves |
Year | Event/Locale | Opening |
1. Gerisch vs G Pfeiffer |
 | 1-0 | 12 | 1941 | Berlin | B32 Sicilian |
2. Bogoljubov vs G Pfeiffer |
 | 0-1 | 30 | 1941 | Krefeld | C41 Philidor Defense |
3. E Weinitschke vs G Pfeiffer |
| 0-1 | 32 | 1941 | German Championship | A28 English |
4. G Pfeiffer vs K Richter |
| 0-1 | 62 | 1941 | German Championship | B01 Scandinavian |
5. K Rahn vs G Pfeiffer |
| ½-½ | 48 | 1941 | German Championship | C32 King's Gambit Declined, Falkbeer Counter Gambit |
6. G Pfeiffer vs H Mueller |
| ½-½ | 88 | 1941 | German Championship | B72 Sicilian, Dragon |
7. L Rellstab vs G Pfeiffer |
| 0-1 | 47 | 1941 | German Championship | B13 Caro-Kann, Exchange |
8. H Lachmann vs G Pfeiffer |
| 1-0 | 39 | 1941 | German Championship | E17 Queen's Indian |
9. G Pfeiffer vs J Lokvenc |
| ½-½ | 33 | 1941 | German Championship | C66 Ruy Lopez |
10. G Pfeiffer vs M Brunoehler |
| 1-0 | 57 | 1941 | German Championship | C70 Ruy Lopez |
11. F Nuernberg vs G Pfeiffer |
| 1-0 | 47 | 1941 | German Championship | D10 Queen's Gambit Declined Slav |
12. G Pfeiffer vs G Kieninger |
| ½-½ | 14 | 1941 | German Championship | C71 Ruy Lopez |
13. R Palme vs G Pfeiffer |
| ½-½ | 26 | 1941 | German Championship | E80 King's Indian, Samisch Variation |
14. G Pfeiffer vs W Ernst |
| ½-½ | 45 | 1941 | German Championship | D27 Queen's Gambit Accepted, Classical |
15. K Junge vs G Pfeiffer |
 | ½-½ | 75 | 1941 | German Championship | A22 English |
16. G Pfeiffer vs H Kranki |
 | 1-0 | 42 | 1941 | German Championship | E11 Bogo-Indian Defense |
17. P Schmidt vs G Pfeiffer |
| 0-1 | 38 | 1941 | German Championship | D46 Queen's Gambit Declined Semi-Slav |
18. L Schmid vs G Pfeiffer |
| 1-0 | 33 | 1947 | Weissenfels | C71 Ruy Lopez |
19. K Richter vs G Pfeiffer |
| 1-0 | 26 | 1948 | Berlin ch | C12 French, McCutcheon |
20. K Richter vs G Pfeiffer |
| 0-1 | 57 | 1949 | Berlin-ch | B12 Caro-Kann Defense |
21. G Pfeiffer vs F Vogt |
| 1-0 | 51 | 1949 | Berlin-ch | A47 Queen's Indian |
22. Saemisch vs G Pfeiffer |
 | ½-½ | 40 | 1949 | Western Zone Championship | D63 Queen's Gambit Declined, Orthodox Defense |
23. L Schmid vs G Pfeiffer |
| 1-0 | 36 | 1949 | Western Zone Championship | C84 Ruy Lopez, Closed |
24. G Pfeiffer vs L Rellstab |
| 0-1 | 34 | 1949 | Western Zone Championship | D41 Queen's Gambit Declined, Semi-Tarrasch |
25. Niephaus vs G Pfeiffer |
 | 0-1 | 45 | 1949 | Western Zone Championship | D50 Queen's Gambit Declined |