| Date | User | Challenge | Score |
| tonoyx91 | Modular Exponentiation | 10 | |
| ub_krypto_18 | XOR Properties | 15 | |
| ub_krypto_18 | Favourite byte | 20 | |
| kjs36202 | Find the Lattice | 100 | |
| moe0l | Symmetry | 50 | |
| moe0l | Bean Counter | 60 | |
| moe0l | Logon Zero | 80 | |
| cat1cat2cat | Modular Arithmetic 2 | 20 | |
| curWarbler | Finding Flags | 2 | |
| RAVEN_031 | Transparency | 50 | |
| moe0l | CTRIME | 70 | |
| moe0l | Stream of Consciousness | 80 | |
| Yatharth | Finding Flags | 2 | |
| Veronika | Generators of Groups | 20 | |
| ev1lm0rty | Resisting Bruteforce | 10 | |
| oiji | Size and Basis | 15 | |
| ev1lm0rty | Keyed Permutations | 5 | |
| ub_krypto_18 | XOR Starter | 10 | |
| RAVEN_031 | SSH Keys | 35 | |
| ev1lm0rty | Modular Arithmetic 2 | 20 | |
| sc4rsup | Base64 | 10 | |
| obahya | Adrien's Signs | 80 | |
| blackout | Computing Public Values | 25 | |
| blackout | Deriving Symmetric Keys | 40 | |
| Llamma | Hex | 5 | |
| toto123456 | Signing Server | 60 | |
| Kanad3 | Endless Emails | 150 | |
| ev1lm0rty | Modular Arithmetic 1 | 20 | |
| ev1lm0rty | Extended GCD | 20 | |
| blackout | Computing Shared Secrets | 30 | |
| Llamma | ASCII | 5 | |
| sc4rsup | Hex | 5 | |
| sean9892 | U-turn (Breizh CTF) | 0 | |
| blackout | Collider | 50 | |
| sc4rsup | ASCII | 5 | |
| kjs36202 | Gram Schmidt | 30 | |
| polhan | You either know, XOR you don't | 30 | |
| Llamma | Great Snakes | 3 | |
| sc4rsup | Great Snakes | 3 | |
| moe0l | Oh SNAP | 120 | |
| moe0l | Resisting Bruteforce | 10 | |
| sc4rsup | Finding Flags | 2 | |
| ub_krypto_18 | Modular Inverting | 25 | |
| moe0l | Keyed Permutations | 5 | |
| Llamma | Finding Flags | 2 | |
| ub_krypto_18 | Modular Arithmetic 2 | 20 | |
| ub_krypto_20 | Bringing It All Together | 50 | |
| m4n059 | Modular Square Root | 35 | |
| ub_krypto_18 | Modular Arithmetic 1 | 20 | |
| moe0l | Pad Thai | 80 |
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