| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. J J Ady vs I Thompson |
| 1-0 | 37 |
1981 |
BCF-ch | C05 French, Tarrasch |
| 2. A Crombleholme vs I Thompson |
| 0-1 | 23 |
1981 |
BCF-ch | E14 Queen's Indian |
| 3. P J Romilly vs I Thompson |
| 1-0 | 32 |
1981 |
BCF-ch | C18 French, Winawer |
| 4. I Thompson vs G Lane |
| 0-1 | 54 |
1981 |
BCF-ch | A25 English |
| 5. I Thompson vs R Nokes |
| ½-½ | 37 |
1981 |
BCF-ch | A25 English |
| 6. H Christ vs I Thompson |
| ½-½ | 42 |
1989 |
WT/M/GT/251 | A45 Queen's Pawn Game |
| 7. I Thompson vs U Schmidt |
| 1-0 | 23 |
1989 |
WT/M/GT/251 | A29 English, Four Knights, Kingside Fianchetto |
| 8. I Thompson vs J Prins |
| 1-0 | 25 |
1989 |
WT/M/GT/251 | D17 Queen's Gambit Declined Slav |
| 9. V Bellas vs I Thompson |
| 0-1 | 39 |
1989 |
WT/M/GT/251 | C05 French, Tarrasch |
| 10. I Thompson vs I T Paananen |
| 1-0 | 10 |
1989 |
WT/M/GT/251 | A29 English, Four Knights, Kingside Fianchetto |
| 11. M Neumann vs I Thompson |
| 1-0 | 42 |
1989 |
WT/M/GT/251 | C15 French, Winawer |
| 12. I Thompson vs P Mueller |
| 1-0 | 48 |
1989 |
WT/M/GT/251 | A21 English |
| 13. G Koehler vs I Thompson |
 | 0-1 | 14 |
1989 |
WT/M/GT/251 | C18 French, Winawer |
| 14. J Schuster vs I Thompson |
| 0-1 | 44 |
1989 |
WT/M/GT/251 | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 15. I Thompson vs J H Herbert |
| 1-0 | 25 |
1989 |
WT/M/GT/251 | A37 English, Symmetrical |
| 16. L Glazkov vs I Thompson |
| ½-½ | 17 |
1989 |
WT/M/GT/251 | A46 Queen's Pawn Game |
| 17. I Thompson vs H Grimm |
| 1-0 | 10 |
1989 |
WT/M/GT/251 | E80 King's Indian, Samisch Variation |
| 18. Z Sturua vs I Thompson |
| 1-0 | 29 |
1998 |
Groningen Open | D35 Queen's Gambit Declined |
| 19. Ehlvest vs I Thompson |
| 1-0 | 46 |
2000 |
Koltanowski Memorial | C02 French, Advance |
| 20. I Thompson vs J Rosenberg |
| 1-0 | 43 |
2001 |
Politiken Cup | A15 English |
| 21. J Adamski vs I Thompson |
| ½-½ | 54 |
2001 |
Politiken Cup | A30 English, Symmetrical |
| 22. I Thompson vs H Nielsen |
| 0-1 | 30 |
2001 |
Politiken Cup | D35 Queen's Gambit Declined |
| 23. I Thompson vs A Paaske |
| 1-0 | 36 |
2001 |
Politiken Cup | A34 English, Symmetrical |
| 24. T Skovgaard vs I Thompson |
| 1-0 | 34 |
2001 |
Politiken Cup | C05 French, Tarrasch |
| 25. J Nicolaisen vs I Thompson |
| 0-1 | 49 |
2001 |
Politiken Cup | C00 French Defense |