Game |
| Result | Moves |
Year | Event/Locale | Opening |
1. K U Mueller vs H Hunte |
| 1-0 | 46 | 1950 | DDR-ch01 Final (DSV+DSB) | D45 Queen's Gambit Declined Semi-Slav |
2. H Hunte vs K U Mueller |
| 0-1 | 44 | 1951 | DDR-ch02 Final | D47 Queen's Gambit Declined Semi-Slav |
3. F Auer vs K U Mueller |
| ½-½ | 23 | 1952 | Helsinki Olympiad qual-2 | E10 Queen's Pawn Game |
4. O Cruz Filho vs K U Mueller |
| 0-1 | 61 | 1952 | Helsinki Olympiad qual-2 | E38 Nimzo-Indian, Classical, 4...c5 |
5. K U Mueller vs W Ramm |
| 1-0 | 38 | 1952 | Helsinki Olympiad qual-2 | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
6. T Florian vs K U Mueller |
| 1-0 | 58 | 1952 | Helsinki Olympiad qual-2 | D55 Queen's Gambit Declined |
7. K U Mueller vs G Primavera |
| ½-½ | 29 | 1952 | Helsinki Olympiad qual-2 | E80 King's Indian, Samisch Variation |
8. B Milic vs K U Mueller |
| 1-0 | 41 | 1952 | Helsinki Olympiad qual-2 | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
9. K U Mueller vs I Johansson |
| 0-1 | 45 | 1952 | Helsinki Olympiad qual-2 | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
10. N Cortlever vs K U Mueller |
| 1-0 | 41 | 1952 | Helsinki Olympiad Final-B | B54 Sicilian |
11. K U Mueller vs H Keller |
| 1-0 | 34 | 1952 | Helsinki Olympiad Final-B | E80 King's Indian, Samisch Variation |
12. E A Mandelbaum vs K U Mueller |
| ½-½ | 71 | 1952 | Helsinki Olympiad Final-B | E26 Nimzo-Indian, Samisch |
13. K U Mueller vs W Litmanowicz |
 | 1-0 | 32 | 1952 | Helsinki Olympiad Final-B | A54 Old Indian, Ukrainian Variation, 4.Nf3 |
14. G Primavera vs K U Mueller |
| 0-1 | 52 | 1952 | Helsinki Olympiad Final-B | E26 Nimzo-Indian, Samisch |
15. K U Mueller vs H Enevoldsen |
| 1-0 | 28 | 1952 | Helsinki Olympiad Final-B | D18 Queen's Gambit Declined Slav, Dutch |
16. D Horne vs K U Mueller |
| ½-½ | 36 | 1952 | Helsinki Olympiad Final-B | B54 Sicilian |
17. K U Mueller vs R Ortega |
| 1-0 | 42 | 1952 | Helsinki Olympiad Final-B | D47 Queen's Gambit Declined Semi-Slav |
18. K U Mueller vs B Koch |
| 0-1 | 44 | 1952 | GDR Championship (Play-off) | D99 Grunfeld Defense, Smyslov |
19. B Koch vs K U Mueller |
| 1-0 | 21 | 1952 | GDR Championship (Play-off) | B65 Sicilian, Richter-Rauzer Attack, 7...Be7 Defense, 9...Nxd4 |
20. K U Mueller vs B Koch |
| 1-0 | 54 | 1952 | GDR Championship (Play-off) | D85 Grunfeld |
21. B Koch vs K U Mueller |
| ½-½ | 21 | 1952 | GDR Championship (Play-off) | B54 Sicilian |
22. K U Mueller vs E Burkhardt |
| 1-0 | 42 | 1953 | East German Championship | E87 King's Indian, Samisch, Orthodox |
23. K U Mueller vs R Fuchs |
| ½-½ | 44 | 1953 | East German Championship | E14 Queen's Indian |
24. G Bessner vs K U Mueller |
| ½-½ | 34 | 1953 | East German Championship | B93 Sicilian, Najdorf, 6.f4 |
25. B Koch vs K U Mueller |
| 1-0 | 16 | 1953 | East German Championship | A07 King's Indian Attack |