| Date | User | Challenge | Score |
| Jocker333 | ASCII | 5 | |
| rjakeeer | Favourite byte | 20 | |
| Jocker333 | Great Snakes | 3 | |
| Abstract | Modular Arithmetic 2 | 20 | |
| Jocker333 | Finding Flags | 2 | |
| rjakeeer | XOR Properties | 15 | |
| larifari | Quadratic Residues | 25 | |
| Abstract | Modular Arithmetic 1 | 20 | |
| warunocive | Great Snakes | 3 | |
| rjakeeer | XOR Starter | 10 | |
| larifari | Modular Inverting | 25 | |
| larifari | Modular Arithmetic 2 | 20 | |
| larifari | Modular Arithmetic 1 | 20 | |
| lunkes | Modular Square Root | 35 | |
| larifari | Extended GCD | 20 | |
| Koalko | Bringing It All Together | 50 | |
| cryptic_ | ASCII | 5 | |
| Shiroxs_ | Hex | 5 | |
| lunkes | Legendre Symbol | 35 | |
| cryptic_ | Great Snakes | 3 | |
| cryptic_ | Finding Flags | 2 | |
| Henners_111 | Bytes and Big Integers | 10 | |
| gulliver | Null or Never | 100 | |
| Henners_111 | Base64 | 10 | |
| matraz60 | You either know, XOR you don't | 30 | |
| Shiroxs_ | ASCII | 5 | |
| lunkes | Quadratic Residues | 25 | |
| Henners_111 | Hex | 5 | |
| Henners_111 | ASCII | 5 | |
| Henners_111 | Great Snakes | 3 | |
| Henners_111 | Finding Flags | 2 | |
| Mai47 | Stream of Consciousness | 80 | |
| lunkes | Modular Inverting | 25 | |
| adrianps93 | Generators of Groups | 20 | |
| lunkes | Modular Arithmetic 2 | 20 | |
| adrianps93 | Modulus Inutilis | 50 | |
| ox1bx | Sratslla SEA (HKCERT CTF) | 0 | |
| Cano_il_Marsi | Backpack Cryptography | 120 | |
| Samigo | Computing Shared Secrets | 30 | |
| 010001000101001 | Export-grade | 100 | |
| lunkes | Modular Arithmetic 1 | 20 | |
| Maram_AYER | Quadratic Residues | 25 | |
| Samigo | Computing Public Values | 25 | |
| lunkes | Extended GCD | 20 | |
| Shiroxs_ | Great Snakes | 3 | |
| 010001000101001 | Parameter Injection | 60 | |
| JacobLu3141 | What's a Lattice? | 40 | |
| gulliver | Armory | 100 | |
| Samigo | Generators of Groups | 20 | |
| JacobLu3141 | Gram Schmidt | 30 |
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