| Num | Name | Problem | Status | Time |
| 61 | Anton Lunyov | Exploring the Calkin-Wilf Tree |  | 6 months ago |
| 62 | Anton Lunyov | Generalized Continued Fractions |  | 6 months ago |
| 63 | Anton Lunyov | Pandigital step numbers | | 6 months ago |
| 64 | Anton Lunyov | Fill the boxes | | 6 months ago |
| 65 | Anton Lunyov | Fill the boxes | | 6 months ago |
| 66 | Anton Lunyov | Fill the boxes | | 6 months ago |
| 67 | Anton Lunyov | Fill the boxes | | 6 months ago |
| 68 | Anton Lunyov | Fill the boxes | | 6 months ago |
| 69 | Anton Lunyov | Congruent Consecutive primes | | 6 months ago |
| 70 | Anton Lunyov | Congruent Consecutive primes | | 6 months ago |
| 71 | Anton Lunyov | Long periods | | 6 months ago |
| 72 | Anton Lunyov | Cubefree numbers | | 6 months ago |
| 73 | Anton Lunyov | One equation to rule them all | | 6 months ago |
| 74 | Anton Lunyov | Prime Arithmetic Progression | | 6 months ago |
| 75 | Anton Lunyov | Hadamard Matrices | | 6 months ago |
| 76 | Anton Lunyov | Find the sum (3) | | 7 months ago |
| 77 | Anton Lunyov | The first Sudoku grid | | 7 months ago |
| 78 | Anton Lunyov | Egyptian fractions | | 7 months ago |
| 79 | Anton Lunyov | Smooth factorizations | | 7 months ago |
| 80 | Anton Lunyov | Smooth factorizations | | 7 months ago |
