| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. T Koch vs V Sejkora |
| 1-0 | 41 | 1990 | Muenster Open | B20 Sicilian |
| 27. S Daub vs T Koch |
| ½-½ | 41 | 1990 | Muenster Open | D85 Grunfeld |
| 28. A Ziegler vs T Koch |
| 1-0 | 35 | 1994 | NRW-Liga I 9495 | E33 Nimzo-Indian, Classical |
| 29. T Koch vs C Pieper-Emden |
| 1-0 | 43 | 1994 | NRW-Liga I 9495 | D10 Queen's Gambit Declined Slav |
| 30. T Koch vs P Haba |
| ½-½ | 63 | 1995 | BL2-W 1995/96 | E11 Bogo-Indian Defense |
| 31. T Koch vs B Kohlweyer |
| 0-1 | 61 | 1995 | BL2-W 9596 | D41 Queen's Gambit Declined, Semi-Tarrasch |
| 32. K Pinkas vs T Koch |
| 0-1 | 48 | 1995 | NRW-Liga I 9495 | B95 Sicilian, Najdorf, 6...e6 |
| 33. F Titzhoff vs T Koch |
| 0-1 | 58 | 1995 | Berliner Sommer | E15 Queen's Indian |
| 34. T Koch vs D Ruzele |
| 0-1 | 32 | 1995 | Berliner Sommer | D45 Queen's Gambit Declined Semi-Slav |
| 35. T Koch vs N Krogius |
| 0-1 | 53 | 1995 | Berliner Sommer | A45 Queen's Pawn Game |
| 36. T Koch vs Kupreichik |
| 0-1 | 72 | 1996 | Bundesliga (2nd) West 1995/96 | E70 King's Indian |
| 37. T Koch vs E Kengis |
| ½-½ | 34 | 1996 | BL2-W 9596 | A40 Queen's Pawn Game |
| 38. C Zhu vs T Koch |
| 1-0 | 30 | 1998 | Cappelle Open | E12 Queen's Indian |
| 39. T Koch vs T Henrichs |
| 0-1 | 40 | 1999 | NRW-Liga I 9899 | C02 French, Advance |
| 40. T Koch vs G Kern |
| 1-0 | 51 | 2000 | NRW-Liga 9900 | D38 Queen's Gambit Declined, Ragozin Variation |
| 41. M Bosboom vs T Koch |
| ½-½ | 78 | 2001 | BL2-West 0001 | A20 English |
| 42. R Knors vs T Koch |
| 0-1 | 56 | 2001 | Belgian Team Championship 2000/01 | B22 Sicilian, Alapin |
| 43. T Koch vs T Henrichs |
| 1-0 | 32 | 2001 | Oberliga NRW1 0102 | D45 Queen's Gambit Declined Semi-Slav |
| 44. T Koch vs Barsov |
| 1-0 | 38 | 2003 | Oberliga NRW 0304 | D38 Queen's Gambit Declined, Ragozin Variation |
| 45. T Koch vs G Schebler |
| ½-½ | 22 | 2004 | Belgian Team Championship 2004/05 | E00 Queen's Pawn Game |
| 46. T Koch vs S Bakker |
| 1-0 | 40 | 2005 | Belgian Team Championship 2005/06 | E15 Queen's Indian |
| 47. P Fontaine vs T Koch |
| 0-1 | 39 | 2006 | Belgian Team Championship 2005/06 | B53 Sicilian |
| 48. B Kohlweyer vs T Koch |
| 0-1 | 40 | 2006 | Oberliga NRW 0506 | E11 Bogo-Indian Defense |
| 49. T Koch vs E Cekro |
| ½-½ | 48 | 2007 | Belgian League | E16 Queen's Indian |
| 50. Z Gofshtein vs T Koch |
| 0-1 | 41 | 2007 | NRW Liga 0607 | A17 English |
Kibitzing
