Game |
| Result | Moves |
Year | Event/Locale | Opening |
1. G Jacoby vs H D MacPherson |
| 1-0 | 32 | 1975 | Hastings Challengers 1975/76 | C00 French Defense |
2. J Dueball vs G Jacoby |
 | 1-0 | 24 | 1976 | Germany | C19 French, Winawer, Advance |
3. G Jacoby vs E Marnier |
 | 1-0 | 47 | 1977 | Hastings Challengers 1977/78 | A13 English |
4. A J Booth vs G Jacoby |
| ½-½ | 35 | 1977 | Hastings Challengers 1977/78 | B01 Scandinavian |
5. G Jacoby vs C W Baker |
| 0-1 | 42 | 1977 | Hastings Challengers 1977/78 | A04 Reti Opening |
6. P Carey vs G Jacoby |
| 0-1 | 43 | 1977 | Hastings Challengers 1977/78 | A34 English, Symmetrical |
7. G Jacoby vs N Ivell |
| 1-0 | 49 | 1978 | Hastings Challengers 1977/78 | D32 Queen's Gambit Declined, Tarrasch |
8. P Large vs G Jacoby |
| 1-0 | 36 | 1978 | Hastings Challengers 1977/78 | B21 Sicilian, 2.f4 and 2.d4 |
9. G Jacoby vs P Lamford |
| ½-½ | 10 | 1978 | Hastings Challengers 1977/78 | A04 Reti Opening |
10. L Hofland vs G Jacoby |
| 0-1 | 55 | 1978 | Hastings Challengers 1977/78 | A62 Benoni, Fianchetto Variation |
11. G Jacoby vs G D Hillyard |
| 0-1 | 42 | 1978 | Hastings Challengers 1977/78 | D27 Queen's Gambit Accepted, Classical |
12. P Biyiasas vs G Jacoby |
| ½-½ | 9 | 1978 | Hastings Challengers 1977/78 | B10 Caro-Kann |
13. I Rogers vs G Jacoby |
| ½-½ | 52 | 1979 | Gausdal Open | A10 English |
14. G Jacoby vs A Colditz |
| ½-½ | 19 | 1980 | Bundesliga 1979/80 North | D02 Queen's Pawn Game |
15. Chandler vs G Jacoby |
 | 1-0 | 24 | 1980 | Klaus Junge Memorial | B22 Sicilian, Alapin |
16. G Siegel vs G Jacoby |
| 0-1 | 35 | 1981 | Bundesliga 8081 | A04 Reti Opening |
17. G Jacoby vs W Schlemermeyer |
| ½-½ | 18 | 1981 | Bundesliga 1981/82 | E50 Nimzo-Indian, 4.e3 O-O 5.Nf3, without ...d5 |
18. T Kordsachia vs G Jacoby |
| 1-0 | 32 | 1981 | Bundesliga 1981/82 | B08 Pirc, Classical |
19. D Werner vs G Jacoby |
| 1-0 | 47 | 1982 | Bundesliga 1981/82 | C69 Ruy Lopez, Exchange, Gligoric Variation |
20. G Jacoby vs H Sonntag |
| ½-½ | 43 | 1982 | Bundesliga 1981/82 | D35 Queen's Gambit Declined |
21. P Ostermeyer vs G Jacoby |
| 1-0 | 28 | 1982 | Bundesliga 1981/82 | D26 Queen's Gambit Accepted |
22. G Jacoby vs H Lieff |
| ½-½ | 64 | 1982 | Bundesliga 1981/82 | B01 Scandinavian |
23. G Jacoby vs H Kestler |
 | ½-½ | 62 | 1982 | Bundesliga 1981/82 | A48 King's Indian |
24. K Klundt vs G Jacoby |
| 0-1 | 33 | 1982 | Bundesliga 1981/82 | B92 Sicilian, Najdorf, Opocensky Variation |
25. D Paulsen vs G Jacoby |
| 1-0 | 40 | 1982 | Bundesliga 1981/82 | B25 Sicilian, Closed |