| Date | User | Challenge | Score |
| Kanishka09 | ASCII | 5 | |
| retne | Privacy-Enhanced Mail? | 25 | |
| purpledragon | ASCII | 5 | |
| Kanishka09 | Great Snakes | 3 | |
| haiderontheradar | Chinese Remainder Theorem | 40 | |
| Kanishka09 | Finding Flags | 2 | |
| ynwa_ | Export-grade | 100 | |
| cyphery | Confusion through Substitution | 25 | |
| Julie_Yeh | Quadratic Residues | 25 | |
| 0xLorenzFF | Greatest Common Divisor | 15 | |
| Draksnets | Finding Flags | 2 | |
| CodeNShadow | Great Snakes | 3 | |
| kzzm | Gaussian Reduction | 50 | |
| farahelnakhal | You either know, XOR you don't | 30 | |
| farahelnakhal | Favourite byte | 20 | |
| purpledragon | Great Snakes | 3 | |
| farahelnakhal | XOR Properties | 15 | |
| seekxr | Finding Flags | 2 | |
| purpledragon | Finding Flags | 2 | |
| Abdulrahman20 | Oh SNAP | 120 | |
| CodeNShadow | Finding Flags | 2 | |
| DHANANJAYAN_P | Base64 | 10 | |
| kzzm | What's a Lattice? | 40 | |
| Nidhogg | Base64 | 10 | |
| l4t4r | Structure of AES | 15 | |
| Nidhogg | Hex | 5 | |
| kzzm | Gram Schmidt | 30 | |
| l4t4r | Resisting Bruteforce | 10 | |
| ynwa_ | Parameter Injection | 60 | |
| Abdulrahman20 | Bean Counter | 60 | |
| l4t4r | Keyed Permutations | 5 | |
| Nidhogg | ASCII | 5 | |
| Sealeodaseal | Favourite byte | 20 | |
| l4t4r | Legendre Symbol | 35 | |
| Nidhogg | Great Snakes | 3 | |
| retne | Lemur XOR | 40 | |
| kzzm | Size and Basis | 15 | |
| Julie_Yeh | Modular Inverting | 25 | |
| kzzm | Vectors | 10 | |
| 2LWaterEverday | Extended GCD | 20 | |
| Sealeodaseal | XOR Properties | 15 | |
| Lyxchee | Keyed Permutations | 5 | |
| liqin | Base64 | 10 | |
| insot | XOR Properties | 15 | |
| l4t4r | Quadratic Residues | 25 | |
| Lyxchee | Modular Binomials | 80 | |
| l4t4r | Modular Inverting | 25 | |
| l4t4r | Modular Arithmetic 2 | 20 | |
| l4t4r | Modular Arithmetic 1 | 20 | |
| l4t4r | Extended GCD | 20 |
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