| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. G Pfeiffer vs H Kranki |
 | 1-0 | 42 |
1941 |
GER-ch | E11 Bogo-Indian Defense |
| 2. Gerisch vs G Pfeiffer |
 | 1-0 | 12 |
1941 |
Berlin | B32 Sicilian |
| 3. G Pfeiffer vs K Richter |
| 0-1 | 62 |
1941 |
GER-ch | B01 Scandinavian |
| 4. G Pfeiffer vs Lokvenc |
| ½-½ | 33 |
1941 |
GER-ch | C66 Ruy Lopez |
| 5. Rellstab vs G Pfeiffer |
| 0-1 | 47 |
1941 |
GER-ch | B13 Caro-Kann, Exchange |
| 6. K Junge vs G Pfeiffer |
| ½-½ | 75 |
1941 |
GER-ch | A22 English |
| 7. R Palme vs G Pfeiffer |
| ½-½ | 26 |
1941 |
GER-ch | E80 King's Indian, Samisch Variation |
| 8. G Pfeiffer vs H Muller |
| ½-½ | 88 |
1941 |
GER-ch | B72 Sicilian, Dragon |
| 9. G Pfeiffer vs Kieninger |
| ½-½ | 14 |
1941 |
GER-ch | C71 Ruy Lopez |
| 10. G Pfeiffer vs W Ernst |
| ½-½ | 45 |
1941 |
GER-ch | D27 Queen's Gambit Accepted, Classical |
| 11. H G Lachmann vs G Pfeiffer |
| 1-0 | 39 |
1941 |
GER-ch | E17 Queen's Indian |
| 12. G Pfeiffer vs M Brunoehler |
| 1-0 | 57 |
1941 |
GER-ch | C70 Ruy Lopez |
| 13. E Weinitschke vs G Pfeiffer |
| 0-1 | 32 |
1941 |
GER-ch | A28 English |
| 14. P F Schmidt vs G Pfeiffer |
| 0-1 | 38 |
1941 |
GER-ch | D46 Queen's Gambit Declined Semi-Slav |
| 15. K Rahn vs G Pfeiffer |
| ½-½ | 48 |
1941 |
GER-ch | C31 King's Gambit Declined, Falkbeer Counter Gambit |
| 16. F Nuernberg vs G Pfeiffer |
| 1-0 | 47 |
1941 |
GER-ch | D10 Queen's Gambit Declined Slav |
| 17. Schmid vs G Pfeiffer |
| 1-0 | 36 |
1949 |
Bad Pyrmont ch-BRD | C84 Ruy Lopez, Closed |
| 18. K Gumprich vs G Pfeiffer |
| 0-1 | 37 |
1949 |
Bad Pyrmont ch-BRD | B10 Caro-Kann |
| 19. G Pfeiffer vs Rellstab |
| 0-1 | 34 |
1949 |
Bad Pyrmont ch-BRD | D41 Queen's Gambit Declined, Semi-Tarrasch |
| 20. Niephaus vs G Pfeiffer |
| 0-1 | 45 |
1949 |
Bad Pyrmont ch-BRD | D50 Queen's Gambit Declined |
| 21. Samisch vs G Pfeiffer |
| ½-½ | 40 |
1949 |
Bad Pyrmont ch-BRD | D63 Queen's Gambit Declined, Orthodox Defense |
| 22. G Pfeiffer vs M Eisinger |
| 1-0 | 48 |
1949 |
Bad Pyrmont ch-BRD | D95 Grunfeld |
| 23. O'Kelly vs G Pfeiffer |
| ½-½ | 46 |
1950 |
Bled (Slovenia) | B18 Caro-Kann, Classical |
| 24. G Pfeiffer vs Puc |
 | 1-0 | 71 |
1950 |
Bled it | C75 Ruy Lopez, Modern Steinitz Defense |
| 25. I Johansson vs G Pfeiffer |
| 0-1 | 29 |
1950 |
Dubrovnik olm | A07 King's Indian Attack |