| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. T Thiel vs S Lagrotteria |
| 0-1 | 52 |
1989 |
Lugano open | C31 King's Gambit Declined, Falkbeer Counter Gambit |
| 2. T Thiel vs Krasenkow |
| 0-1 | 59 |
1991 |
It Krumbach (GER) | B33 Sicilian |
| 3. T Thiel vs G Beikert |
| 0-1 | 41 |
1991 |
2.BLSW | C33 King's Gambit Accepted |
| 4. T Thiel vs M Steinbacher |
| 0-1 | 20 |
1991 |
Germany | B06 Robatsch |
| 5. N Assmann vs T Thiel |
| ½-½ | 48 |
1992 |
GER CupT | A07 King's Indian Attack |
| 6. T Thiel vs Ftacnik |
| 0-1 | 28 |
1992 |
Dortmund op-A | B90 Sicilian, Najdorf |
| 7. T Thiel vs M Brodsky |
| 0-1 | 45 |
1993 |
Berliner Sommer 11th | B46 Sicilian, Taimanov Variation |
| 8. P Etchegaray vs T Thiel |
 | 1-0 | 22 |
1993 |
Groningen Chess Festival; GM open | D85 Grunfeld |
| 9. N Davies vs T Thiel |
 | 1-0 | 12 |
1994 |
London (England) | A20 English |
| 10. D Norwood vs T Thiel |
| 0-1 | 39 |
1994 |
London (England) | D02 Queen's Pawn Game |
| 11. D Gross vs T Thiel |
| 0-1 | 38 |
1999 |
Bundesliga 1998/99, Germany | C11 French |
| 12. G Ligterink vs T Thiel |
| 1-0 | 19 |
1999 |
VL Gr2 9900 | D09 Queen's Gambit Declined, Albin Counter Gambit, 5.g3 |
| 13. H Kummerow vs T Thiel |
| ½-½ | 13 |
1999 |
Bundesliga 1998/99, Germany | B00 Uncommon King's Pawn Opening |
| 14. T Thiel vs Nijboer |
 | 0-1 | 27 |
1999 |
Bundesliga 1998/99, Germany | B40 Sicilian |
| 15. Chandler vs T Thiel |
| 1-0 | 50 |
1999 |
Bundesliga 1998-9 | B30 Sicilian |
| 16. Dr. D Plump vs T Thiel |
| 0-1 | 28 |
1999 |
Bundesliga 1998/99, Germany | B57 Sicilian |
| 17. T Thiel vs S Joachim |
| ½-½ | 9 |
2001 |
Bundesliga 2000-1 | D78 Neo-Grunfeld, 6.O-O c6 |
| 18. T Thiel vs J Markgraf |
| 1-0 | 24 |
2001 |
Bundesliga 2000-1 | B06 Robatsch |
| 19. Eingorn vs T Thiel |
| 1-0 | 39 |
2003 |
Bad Wiessee | A15 English |
| 20. T Thiel vs J Cornelisse |
| 1-0 | 33 |
2006 |
Amsterdam Chess Tournament | C22 Center Game |
| 21. M Overeem vs T Thiel |
| 1-0 | 42 |
2006 |
Amsterdam Chess Tournament | A21 English |
| 22. L Hofland vs T Thiel |
| ½-½ | 10 |
2006 |
Amsterdam Chess Tournament | A20 English |
| 23. T Thiel vs K Ribic |
| ½-½ | 46 |
2006 |
Bundesliga 0506 | C15 French, Winawer |
| 24. A Walton vs T Thiel |
| 1-0 | 46 |
2006 |
Amsterdam Chess Tournament | C02 French, Advance |
| 25. T Thiel vs V Ouwendijk |
| 1-0 | 56 |
2006 |
Amsterdam Chess Tournament | B23 Sicilian, Closed |