| Date | User | Challenge | Score |
| DaarK_XENOS | Chinese Remainder Theorem | 40 | |
| Sungyeon | Extended GCD | 20 | |
| Sungyeon | Greatest Common Divisor | 15 | |
| Sungyeon | Lemur XOR | 40 | |
| FineShine | Point Addition | 30 | |
| FineShine | Point Negation | 10 | |
| FineShine | Background Reading | 5 | |
| Sungyeon | You either know, XOR you don't | 30 | |
| FineShine | Modular Binomials | 80 | |
| Sungyeon | Favourite byte | 20 | |
| FineShine | Adrien's Signs | 80 | |
| Sungyeon | Encoding Challenge | 40 | |
| joko | Encoding Challenge | 40 | |
| FineShine | Chinese Remainder Theorem | 40 | |
| FineShine | Modular Square Root | 35 | |
| FineShine | Legendre Symbol | 35 | |
| heatsp | Great Snakes | 3 | |
| FineShine | Diffusion through Permutation | 30 | |
| heatsp | Finding Flags | 2 | |
| joko | Bytes and Big Integers | 10 | |
| FineShine | Confusion through Substitution | 25 | |
| rjmafoaka | Adrien's Signs | 80 | |
| FineShine | Round Keys | 20 | |
| joko | Base64 | 10 | |
| FineShine | Structure of AES | 15 | |
| joko | Hex | 5 | |
| FineShine | Resisting Bruteforce | 10 | |
| FineShine | Keyed Permutations | 5 | |
| henril | Background Reading | 5 | |
| joko | ASCII | 5 | |
| FineShine | Quadratic Residues | 25 | |
| OM4Rz | Bytes and Big Integers | 10 | |
| IchabodeCrane | Modular Arithmetic 2 | 20 | |
| FineShine | Modular Inverting | 25 | |
| FineShine | Modular Arithmetic 2 | 20 | |
| FineShine | Modular Arithmetic 1 | 20 | |
| FineShine | Extended GCD | 20 | |
| joko | Network Attacks | 5 | |
| FineShine | Greatest Common Divisor | 15 | |
| Eduva_2304 | Hex | 5 | |
| D1533 | Oh SNAP | 120 | |
| littleseal26 | ECB Oracle | 60 | |
| khalifa_niang | ASCII | 5 | |
| Nunya777 | XOR Starter | 10 | |
| OM4Rz | Base64 | 10 | |
| rjmafoaka | Chinese Remainder Theorem | 40 | |
| Geekor | Greatest Common Divisor | 15 | |
| khalifa_niang | Great Snakes | 3 | |
| randomusername_0 | Symmetry | 50 | |
| joko | Great Snakes | 3 |
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