| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. Bagirov vs R Mainka |
| 1-0 | 27 |
1991 |
Gausdal 51/3 | A01 Nimzovich-Larsen Attack |
| 27. Romanishin vs R Mainka |
| ½-½ | 55 |
1991 |
Polanica Zdroj | C78 Ruy Lopez |
| 28. N Padevsky vs R Mainka |
| 0-1 | 32 |
1991 |
Dortmund-C | B25 Sicilian, Closed |
| 29. R Mainka vs G Timoshchenko |
| 0-1 | 38 |
1991 |
Ostende op | B85 Sicilian, Scheveningen, Classical |
| 30. Wolff vs R Mainka |
| 0-1 | 29 |
1991 |
Triberg | A21 English |
| 31. H Seibold vs R Mainka |
| ½-½ | 32 |
1991 |
BRD-BL Dortmund/Nure | C31 King's Gambit Declined, Falkbeer Counter Gambit |
| 32. R Mainka vs Zsuzsa Polgar |
| ½-½ | 13 |
1991 |
Polanica Zdroj | B27 Sicilian |
| 33. Adorjan vs R Mainka |
| 1-0 | 33 |
1991 |
Polanica Zdroj | A21 English |
| 34. Miles vs R Mainka |
| 0-1 | 41 |
1991 |
Oostende op | A21 English |
| 35. R Mainka vs G Timoshchenko |
| 1-0 | 36 |
1991 |
Oberwart op | B90 Sicilian, Najdorf |
| 36. R Mainka vs Khalifman |
| 0-1 | 32 |
1991 |
Triberg (Germany) | B50 Sicilian |
| 37. R Mainka vs Lautier |
| ½-½ | 26 |
1991 |
cat.11 | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 38. Hertneck vs R Mainka |
| ½-½ | 42 |
1991 |
Bundesliga 9192 | A57 Benko Gambit |
| 39. Gulko vs R Mainka |
| 1-0 | 40 |
1991 |
Wien (open) 53/603 | E90 King's Indian |
| 40. R Mainka vs Adams |
| 0-1 | 75 |
1991 |
Oostende op | C84 Ruy Lopez, Closed |
| 41. R Mainka vs Smejkal |
| 0-1 | 42 |
1991 |
Rubinstein mem | C92 Ruy Lopez, Closed |
| 42. Psakhis vs R Mainka |
| 1-0 | 50 |
1991 |
Hartberg op | B13 Caro-Kann, Exchange |
| 43. Uhlmann vs R Mainka |
| 1-0 | 42 |
1991 |
Hartberg | A21 English |
| 44. Wojtkiewicz vs R Mainka |
| ½-½ | 12 |
1991 |
It cat.11 | E69 King's Indian, Fianchetto, Classical Main line |
| 45. Razuvaev vs R Mainka |
| ½-½ | 22 |
1992 |
Prague Chip | A57 Benko Gambit |
| 46. Hort vs R Mainka |
| ½-½ | 53 |
1992 |
Baden-Baden | A48 King's Indian |
| 47. R Mainka vs Korchnoi |
| ½-½ | 43 |
1992 |
Polanica Zdroj | B14 Caro-Kann, Panov-Botvinnik Attack |
| 48. Glek vs R Mainka |
| 1-0 | 38 |
1992 |
Lippstadt | C69 Ruy Lopez, Exchange, Gligoric Variation, 6.d4 |
| 49. W Schmidt vs R Mainka |
| 1-0 | 61 |
1992 |
Lippstadt | E97 King's Indian |
| 50. R Mainka vs Van der Wiel |
| ½-½ | 27 |
1992 |
Baden-Baden II | C16 French, Winawer |