| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. K Dehmelt vs W J Donaldson |
| ½-½ | 21 | 1988 | Philadelphia | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 27. R Stoy vs K Dehmelt |
| 0-1 | 26 | 1988 | Philadelphia | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 28. K Dehmelt vs L Klein |
| 1-0 | 65 | 1988 | Philadelphia | A43 Old Benoni |
| 29. G Taylor vs K Dehmelt |
| 1-0 | 67 | 1988 | Philadelphia | E11 Bogo-Indian Defense |
| 30. K Dehmelt vs R Szmetan |
| 1-0 | 34 | 1988 | Philadelphia | B10 Caro-Kann |
| 31. P Dauvergne vs K Dehmelt |
| 0-1 | 32 | 1988 | Philadelphia | E11 Bogo-Indian Defense |
| 32. S Goregliad vs K Dehmelt |
| 0-1 | 56 | 1988 | Philadelphia | E46 Nimzo-Indian |
| 33. K Dehmelt vs R Stone |
| 1-0 | 18 | 1988 | Philadelphia | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 34. K Dehmelt vs L Baquero |
| ½-½ | 15 | 1989 | Philadelphia | C82 Ruy Lopez, Open |
| 35. K Dehmelt vs Deep Thought |
| 0-1 | 49 | 1989 | USA | B02 Alekhine's Defense |
| 36. G Garcia vs K Dehmelt |
| 0-1 | 53 | 1989 | Philadelphia | C93 Ruy Lopez, Closed, Smyslov Defense |
| 37. R Szmetan vs K Dehmelt |
| 0-1 | 50 | 1989 | Philadelphia | E32 Nimzo-Indian, Classical |
| 38. K Dehmelt vs R Stone |
| ½-½ | 42 | 1989 | Philadelphia | B81 Sicilian, Scheveningen, Keres Attack |
| 39. T Beckman vs K Dehmelt |
| 1-0 | 68 | 1989 | 17th World Open | A20 English |
| 40. N Rogers vs K Dehmelt |
| ½-½ | 44 | 1989 | Philadelphia | A07 King's Indian Attack |
| 41. K Dehmelt vs R Costigan |
| 1-0 | 61 | 1989 | Philadelphia | C86 Ruy Lopez, Worrall Attack |
| 42. K Dehmelt vs B Rind |
| ½-½ | 33 | 1989 | Philadelphia | B30 Sicilian |
| 43. K Dehmelt vs L Klein |
| ½-½ | 11 | 1989 | Philadelphia | C01 French, Exchange |
| 44. K Dehmelt vs O Popovych |
| 1-0 | 48 | 1989 | Philadelphia | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 45. L Leow vs K Dehmelt |
| ½-½ | 26 | 1989 | Philadelphia | C84 Ruy Lopez, Closed |
| 46. M Shahade vs K Dehmelt |
| ½-½ | 32 | 1989 | Philadelphia | E38 Nimzo-Indian, Classical, 4...c5 |
| 47. M Ebeling vs K Dehmelt |
| 1-0 | 33 | 1989 | John Kellner Memorial section B | C92 Ruy Lopez, Closed |
| 48. K Dehmelt vs M Alcock |
| 1-0 | 25 | 1990 | NAtlantic tt3 corr9094 | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 49. P Ma vs K Dehmelt |
| 1-0 | 38 | 1991 | CCCA-70 GM tournament | C53 Giuoco Piano |
| 50. A A Idema vs K Dehmelt |
| 1-0 | 39 | 1991 | CAN jub70 corr9195 | E32 Nimzo-Indian, Classical |
Kibitzing
