Game |
| Result | Moves |
Year | Event/Locale | Opening |
1. T Koch vs H Haselhorst |
| 1-0 | 45 | 1989 | Muenster op | D02 Queen's Pawn Game |
2. T Koch vs Z Szabo |
| 1-0 | 31 | 1990 | Utasellato IM-B | A57 Benko Gambit |
3. B Lengyel vs T Koch |
| 0-1 | 44 | 1990 | Utasellato IM-B | B84 Sicilian, Scheveningen |
4. T Koch vs M Fette |
| 1-0 | 36 | 1990 | Utasellato IM-B | A48 King's Indian |
5. Z Nemeth vs T Koch |
| 0-1 | 29 | 1990 | Utasellato IM-B | A05 Reti Opening |
6. A Sherzer vs T Koch |
| ½-½ | 51 | 1990 | Utasellato IM-B | B84 Sicilian, Scheveningen |
7. T Koch vs Z Zivkovic |
| 1-0 | 71 | 1990 | Utasellato IM-B | A44 Old Benoni Defense |
8. K Mueller vs T Koch |
| ½-½ | 5 | 1990 | Utasellato IM-B | B56 Sicilian |
9. T Koch vs E Kahn |
| ½-½ | 16 | 1990 | Utasellato IM-B | E10 Queen's Pawn Game |
10. A Meszaros vs T Koch |
| 0-1 | 72 | 1990 | Utasellato IM-B | B90 Sicilian, Najdorf |
11. T Koch vs L Somlai |
| 0-1 | 20 | 1990 | Utasellato IM-B | D43 Queen's Gambit Declined Semi-Slav |
12. T Koch vs Z Horvath |
| ½-½ | 10 | 1990 | Utasellato IM-B | D37 Queen's Gambit Declined |
13. R Barcenilla vs T Koch |
| 0-1 | 38 | 1990 | World Youth Championship (U-18) | A22 English |
14. T Koch vs P H Nielsen |
| 1-0 | 39 | 1990 | World Youth Championship (U-18) | E81 King's Indian, Samisch |
15. T Koch vs D Reinderman |
| 1-0 | 80 | 1990 | World Youth Championship (U-18) | A48 King's Indian |
16. T Koch vs B Tabernig |
| ½-½ | 58 | 1990 | World Youth Championship (U-18) | D51 Queen's Gambit Declined |
17. K Badev vs T Koch |
| 0-1 | 42 | 1990 | World Youth Championship (U-18) | B53 Sicilian |
18. Y Tong vs T Koch |
| 1-0 | 51 | 1990 | World Youth Championship (U-18) | B90 Sicilian, Najdorf |
19. T Koch vs A Kogan |
| 1-0 | 40 | 1990 | World Youth Championship (U-18) | E15 Queen's Indian |
20. T Koch vs A Wong |
| 1-0 | 48 | 1990 | World Youth Championship (U-18) | D87 Grunfeld, Exchange |
21. L Jones vs T Koch |
| 0-1 | 41 | 1990 | World Youth Championship (U-18) | E12 Queen's Indian |
22. T Koch vs Kramnik |
 | 0-1 | 42 | 1990 | World Youth Championship (U-18) | A80 Dutch |
23. G Dermann vs T Koch |
| 0-1 | 68 | 1990 | Muenster Open | E12 Queen's Indian |
24. T Koch vs V Sejkora |
| 1-0 | 41 | 1990 | Muenster Open | B20 Sicilian |
25. F Middendorf vs T Koch |
| ½-½ | 10 | 1990 | Muenster Open | A34 English, Symmetrical |