| Date | User | Challenge | Score |
| nothelllccat | Finding Flags | 2 | |
| RizoCrk | Legendre Symbol | 35 | |
| ngynmq | ZKP Introduction | 5 | |
| RizoCrk | Quadratic Residues | 25 | |
| ROPShade | ASCII | 5 | |
| RizoCrk | Modular Inverting | 25 | |
| RizoCrk | Modular Arithmetic 2 | 20 | |
| Leenkunn | Great Snakes | 3 | |
| ROPShade | Great Snakes | 3 | |
| ROPShade | Finding Flags | 2 | |
| ShirleenW | Bringing It All Together | 50 | |
| Leenkunn | Finding Flags | 2 | |
| ShirleenW | Diffusion through Permutation | 30 | |
| CastorJr | Round Keys | 20 | |
| RizoCrk | Modular Arithmetic 1 | 20 | |
| ShirleenW | Confusion through Substitution | 25 | |
| ShirleenW | Round Keys | 20 | |
| alex_dranoel | ASCII | 5 | |
| RizoCrk | Extended GCD | 20 | |
| ShirleenW | Structure of AES | 15 | |
| RizoCrk | Greatest Common Divisor | 15 | |
| sntt | ASCII | 5 | |
| ShirleenW | Resisting Bruteforce | 10 | |
| ShirleenW | Keyed Permutations | 5 | |
| JOJAR | Static Client | 100 | |
| RizoCrk | Network Attacks | 5 | |
| sntt | Great Snakes | 3 | |
| alex_dranoel | Great Snakes | 3 | |
| CastorJr | Structure of AES | 15 | |
| sntt | Finding Flags | 2 | |
| alex_dranoel | Finding Flags | 2 | |
| ErikaRubi | Base64 | 10 | |
| nwal | Point Negation | 10 | |
| CastorJr | Resisting Bruteforce | 10 | |
| nwal | Background Reading | 5 | |
| CastorJr | Keyed Permutations | 5 | |
| beatrice_3cat | ASCII | 5 | |
| beatrice_3cat | Great Snakes | 3 | |
| ErikaRubi | Hex | 5 | |
| chjwoo | You either know, XOR you don't | 30 | |
| Cupi | Square Eyes | 35 | |
| ErikaRubi | ASCII | 5 | |
| zxcShadee | XOR Starter | 10 | |
| striwer | Greatest Common Divisor | 15 | |
| sadman123456 | Great Snakes | 3 | |
| ErikaRubi | Great Snakes | 3 | |
| Kaoryu | Modular Inverting | 25 | |
| greentea153 | Hex | 5 | |
| zxcShadee | Bytes and Big Integers | 10 | |
| sadman123456 | Finding Flags | 2 |
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