| Date | User | Challenge | Score |
| tymbaca | Extended GCD | 20 | |
| Jinx | MDFlag | 125 | |
| xseris | Modular Binomials | 80 | |
| Jinx | MD0 | 80 | |
| aenwyn | Base64 | 10 | |
| Bonolori404 | Structure of AES | 15 | |
| xseris | Adrien's Signs | 80 | |
| aenwyn | Hex | 5 | |
| aenwyn | ASCII | 5 | |
| aenwyn | Great Snakes | 3 | |
| BloodAxe | You either know, XOR you don't | 30 | |
| tymbaca | Greatest Common Divisor | 15 | |
| obahya | Computing Public Values | 25 | |
| BloodAxe | Favourite byte | 20 | |
| ebajraktari | Point Negation | 10 | |
| alxbq | Round Keys | 20 | |
| Eliarty33 | Hex | 5 | |
| Bonolori404 | Resisting Bruteforce | 10 | |
| BloodAxe | XOR Properties | 15 | |
| ebajraktari | Background Reading | 5 | |
| aatifahmad123 | Lemur XOR | 40 | |
| Bonolori404 | Keyed Permutations | 5 | |
| Eliarty33 | ASCII | 5 | |
| Jinx | Mixed Up | 120 | |
| BloodAxe | XOR Starter | 10 | |
| alxbq | Structure of AES | 15 | |
| Jinx | Invariant | 250 | |
| nullex | Modular Square Root | 35 | |
| Gabiso | Quadratic Residues | 25 | |
| Jinx | Merkle Trees | 25 | |
| aatifahmad123 | You either know, XOR you don't | 30 | |
| Gabiso | Modular Inverting | 25 | |
| Jinx | No Random, No Bias | 120 | |
| LenMato | Great Snakes | 3 | |
| konkod123 | Greatest Common Divisor | 15 | |
| Gabiso | Modular Arithmetic 2 | 20 | |
| obahya | Generators of Groups | 20 | |
| tymbaca | Favourite byte | 20 | |
| BloodAxe | Bytes and Big Integers | 10 | |
| sulinno | Computing Shared Secrets | 30 | |
| Gabiso | Modular Arithmetic 1 | 20 | |
| tymbaca | XOR Properties | 15 | |
| Jinx | ProSign 3 | 100 | |
| Jinx | Curveball | 100 | |
| LenMato | Finding Flags | 2 | |
| rexaa | Encoding Challenge | 40 | |
| Jinx | Digestive | 60 | |
| heckgold | Base64 | 10 | |
| g0os3 | Secure Protocols | 5 | |
| cyberfred | Base64 | 10 |
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