| Date | User | Challenge | Score |
| ra_mn | Modulus Inutilis | 50 | |
| vladturcanu | Bringing It All Together | 50 | |
| mathical0732 | Round Keys | 20 | |
| MaddoxKibati | Modular Binomials | 80 | |
| vladturcanu | Diffusion through Permutation | 30 | |
| vladturcanu | Confusion through Substitution | 25 | |
| Maui | Great Snakes | 3 | |
| Bang_Jo | ASCII | 5 | |
| vladturcanu | Round Keys | 20 | |
| brew | Nativity | 60 | |
| Maui | Finding Flags | 2 | |
| Ozzie1992 | ASCII | 5 | |
| Bang_Jo | Great Snakes | 3 | |
| katia | Bytes and Big Integers | 10 | |
| TheMage | Finding Flags | 2 | |
| MaddoxKibati | Adrien's Signs | 80 | |
| MaddoxKibati | Chinese Remainder Theorem | 40 | |
| MaddoxKibati | Modular Square Root | 35 | |
| MaddoxKibati | Legendre Symbol | 35 | |
| Bang_Jo | Finding Flags | 2 | |
| jiaanc | Favourite byte | 20 | |
| MaddoxKibati | Quadratic Residues | 25 | |
| mathical0732 | Structure of AES | 15 | |
| MaddoxKibati | Modular Inverting | 25 | |
| hkult | Great Snakes | 3 | |
| MaddoxKibati | Modular Arithmetic 2 | 20 | |
| rosanyakomitta | Chinese Remainder Theorem | 40 | |
| MaddoxKibati | Modular Arithmetic 1 | 20 | |
| ra_mn | Salty | 20 | |
| MaddoxKibati | Extended GCD | 20 | |
| Pulldown | Modes of Operation Starter | 15 | |
| rosanyakomitta | Modular Square Root | 35 | |
| MaddoxKibati | Greatest Common Divisor | 15 | |
| rosanyakomitta | Legendre Symbol | 35 | |
| Aliengirl420 | Finding Flags | 2 | |
| Muriungife | Quadratic Residues | 25 | |
| Pulldown | Bringing It All Together | 50 | |
| risolbasi | Encoding Challenge | 40 | |
| lityy | Hex | 5 | |
| hkult | Finding Flags | 2 | |
| Ehyoo1121 | Bean Counter | 60 | |
| Tbs12455 | Modular Inverting | 25 | |
| Tbs12455 | Modular Arithmetic 2 | 20 | |
| Tbs12455 | Modular Arithmetic 1 | 20 | |
| jiaanc | XOR Properties | 15 | |
| Tbs12455 | Extended GCD | 20 | |
| Tbs12455 | Greatest Common Divisor | 15 | |
| khxjn | Salty | 20 | |
| Pulldown | Diffusion through Permutation | 30 | |
| Tbs12455 | Favourite byte | 20 |
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