| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. N Sorokin vs N Riumin |
 | 0-1 | 46 | 1931 | USSR Championship | A46 Queen's Pawn Game |
| 27. N Riumin vs G Kasparian |
| 1-0 | 56 | 1931 | USSR Championship | B13 Caro-Kann, Exchange |
| 28. V Goglidze vs N Riumin |
| ½-½ | 29 | 1931 | USSR Championship | C41 Philidor Defense |
| 29. N Riumin vs A Budo |
| 1-0 | 25 | 1931 | USSR Championship | D05 Queen's Pawn Game |
| 30. I Mazel vs N Riumin |
| ½-½ | 35 | 1931 | USSR Championship | A27 English, Three Knights System |
| 31. N Riumin vs V Sozin |
| 1-0 | 34 | 1931 | USSR Championship | A46 Queen's Pawn Game |
| 32. Alatortsev vs N Riumin |
| ½-½ | 52 | 1931 | USSR Championship | D52 Queen's Gambit Declined |
| 33. N Riumin vs B Verlinsky |
| 1-0 | 29 | 1931 | USSR Championship | D37 Queen's Gambit Declined |
| 34. I Kan vs N Riumin |
| ½-½ | 27 | 1931 | USSR Championship | C41 Philidor Defense |
| 35. N Riumin vs A Zamikhovsky |
| 1-0 | 73 | 1931 | USSR Championship | C01 French, Exchange |
| 36. F Bohatirchuk vs N Riumin |
| 0-1 | 39 | 1931 | USSR Championship | B80 Sicilian, Scheveningen |
| 37. N Riumin vs M Yudovich Sr |
| ½-½ | 45 | 1931 | USSR Championship | C01 French, Exchange |
| 38. Botvinnik vs N Riumin |
 | 1-0 | 32 | 1931 | USSR Championship | D11 Queen's Gambit Declined Slav |
| 39. V Rauzer vs N Riumin |
| 1-0 | 48 | 1931 | USSR Championship | D70 Neo-Grunfeld Defense |
| 40. N Riumin vs V Kirillov |
| 0-1 | 30 | 1931 | USSR Championship | A07 King's Indian Attack |
| 41. N Riumin vs Botvinnik |
| ½-½ | 30 | 1932 | RUS Radio corr | E34 Nimzo-Indian, Classical, Noa Variation |
| 42. N Riumin vs N Zubarev |
| 1-0 | 46 | 1932 | National Tournament | A46 Queen's Pawn Game |
| 43. A S Sergeev vs N Riumin |
| 0-1 | 23 | 1932 | National Tournament | E23 Nimzo-Indian, Spielmann |
| 44. N Riumin vs I Kan |
| 1-0 | 34 | 1932 | National Tournament | B13 Caro-Kann, Exchange |
| 45. F Duz-Khotimirsky vs N Riumin |
| 1-0 | 34 | 1932 | National Tournament | D30 Queen's Gambit Declined |
| 46. M Yudovich Sr vs N Riumin |
| ½-½ | 14 | 1933 | Moscow Championship 1933/34 | C19 French, Winawer, Advance |
| 47. B Verlinsky vs N Riumin |
| 0-1 | 31 | 1933 | Moscow Championship 1933/34 | B58 Sicilian |
| 48. N Riumin vs I Kan |
| ½-½ | 24 | 1933 | Moscow Championship 1933/34 | C11 French |
| 49. I Rabinovich vs N Riumin |
| 0-1 | 32 | 1933 | USSR Championship | A84 Dutch |
| 50. S Belavenets vs N Riumin |
| 0-1 | 37 | 1933 | Moscow Championship 1933/34 | A40 Queen's Pawn Game |
Kibitzing
